https://support.steampowered.com/kb_article.php?ref=2117-ilzv-2837

From now on you will get VAC warnings and disconnects while playing VAC games if you run famous idling software. It may not VAC ban you, but can render game unplayable for some time. Idle carefully!

There are a number of common software conflicts that can cause this error. If you are running any of the following software, please disable it while playing:

  • CCleaner
  • Powershell
  • Sandboxie
  • Cheat Engine
  • IObit Start Menu 8
  • Process Hacker
  • DLL Injectors
  • Hypervisors
  • Steam Idlers

EDIT: From Steam Support:

We don't condone or recommend running Steam Idling services for any reason.

7 years ago*

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Do you even idle, bro?

View Results
h. Idle what? Never heard of it and I play all my games by myself. I have a lot of free time. ಠ_ಠ
6. I don't play games. I just idle them. It's a hobby of mine, don't judge me. ( ͡° ͜ʖ ͡°)
6. Thanks for news. I will make sure to turn off idlers while playing CSGO \ (•◡•) /
M. haha you noob, you should idle cards on virtual machine ᕙ(⇀‸↼‶)ᕗ
a. Where is the hidden giveaway? I don't care about this thread and just want free games. (ノಠ益ಠ)ノ彡┻━┻
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7 years ago
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DOSE - dope of emotional stalker ?
ASF - astounding sexy fragrant ?

7 years ago
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7 years ago
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I use ASF...whoop whoop. Read through some of the info, much appreciated.
Trusting you with my farming Archie, don't let us down. ;)

7 years ago
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How ?
ASF is just connecting and idling to Steam network while you don't play any game, while it doesn't interact at all with system and other software memory space.

7 years ago
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7 years ago
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But for Valve it's just you being AFK in a game, because that's what ASF is basically doing (if I'm not mistaken).

7 years ago
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Looks like it's not just idlers, but also other common programs like CCleaner etc. D:

7 years ago
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say what?? I like that program and use it for system maintenance. wtf

7 years ago*
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VAC ban for you then ;-)

7 years ago
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Damn it! ;)

7 years ago
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TikiOne Steam Cleaner is more aggressive than CCleaner. I have never had troubles with either one and VAC games. My 4200+ hours playing Day of Defeat: Source is proof of that. None of the people that I play with have ever mentioned it either. I'm not sure why they list CCleaner as something that will break VAC unless VAC is different for their other games that have it.

7 years ago
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Whaaaat? How do they even justify that? How could CCleaner do anything to your games in the first place. D:

7 years ago
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It can mess with information required for games, like stuff in the registry. There are a few games that use the registry to keep track of things, and if CCleaner messes with those registry entries it can cause issues...

7 years ago
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Huh, never heard of that before. I guess I'd better make sure CCleaner is turned off whenever I play VAC from now on...

7 years ago
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Why would a game use the registry to keep track of things? That seems... odd... And not really efficient either...

7 years ago
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Quite a lot of Unity games do that

7 years ago
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It is odd, but it happens... Only seen it with indie games thus far, so I would say it's safe to assume that the devs aren't the best programmers and don't know of better ways to store and load data for use across sessions (it's better to store it in a text file, but they fail to do that somehow)... And implementing VAC is actually quite easy, so they can manage that while failing other things...

7 years ago
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it's better to store it in a text file, but they fail to do that somehow

Which is surprising, because that is actually really easy (at least with C#, I've not done it in other languages yet). Using the registry on the other hand is actually a bit more difficult (and there is a lot less info on that as well)...

7 years ago
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It is very easy, yea... But there's a large amount of extremely easy "do it yourself game making kits" out there these days with a lot of premade modules for them, including Unity as the worst offender and RPGMaker not far behind (don't get me wrong though, there are great games made with both, but they have a very low skill floor). This means the threshold has been lowered from "has to know the basics of programming" to "has to be able to copy/paste", which means creating a custom text file might actually be above their skill level and there happens to be a built in feature to store things in the registry (intended for game settings, probably)...

7 years ago
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Good point. If you have no programming knowledge you might not know what would be the best thing to do. And even if you try to look it up, it might look incredibly complicated (I know I thought it was hard to understand when I first encountered things like StreamReader). I guess it's easy for me to say it's easy, since programming is basically my life now...

7 years ago
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Never had a VAC when I played CSGO and Ccleaner was in background the whole time. Once or twice I also used it while playing because I didn't know about the VAC.
I'm not saying not to ba careful (and I've been more careful ever since I discovered), but i don't think it's so EASY to be VACed with Ccleaner.

7 years ago
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as long as you're not running it while playing, you're fine, the new update just disconnects you from VAC if "unauthorized" changes to the game files occur while playing VAC-protected games

7 years ago
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So its only on VAC games right?

7 years ago
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yes, if you run VAC enabled game, you are risking to be disconnected by VAC. Possibly banned, but I can't confirm or deny it.

7 years ago
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Wow, this sucks. :S

7 years ago
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I only idle when I am not playing, no risk of conflicts that way.

7 years ago
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Same, and I don't play VAC-enabled games, so double safety :-)

7 years ago
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Yeah, I only use idlers when I'm not playing.

7 years ago
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+1. Also ASF stops farming when a game is started, so there shouldn't really be a problem

7 years ago
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That doesn't really matter, as very, very, very ELI5 version: If ASF.exe = on, then VACban-warning, as one of the things VAC look for are what programs are running in background, sometimes without caring how they are used.

And no, renaming ASF.exe to totally_not_asf.exe will not be enough :P

7 years ago
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Maybe they have ASF running on a different computador:-)

7 years ago
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Yup, starting ASF on other computer would work flawlessly :P

7 years ago
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Okay, I think I used to close idlers before playing csgo at all, I'll just pay a little more attention to surely do that in the future :)

7 years ago
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It might be new addon to VAC-search, so it might not cause troubles before.

VAC is a big beast that isn't really documented (obviously, as to not give cheaters ways to go around it), we know it scans memory for various stuff, both just names/signatures of various programs and also much more complicated stuff like if what happens on screen is impossible to be done by real human (like cursor not moving from left bottom to top right corner, but instead it it teleports there).

We don't really know what they look for when they say "steam idlers", maybe ASF is actually safe as they only go after oldest steam idler - Steam Achievement Manager? Or maybe ASF is the only one they hunt for, because it is running steam.exe in "different PC", which kinda is same thing as sandboxie?

One way or another, I would suggest not starting ASF.exe along with csgo.exe (or any other vacgame.exe) - you probably won't get ban, but you will have to restart steam or even whole PC after you get that VAC-warning I linked before.

7 years ago
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Hunting for ASF doesn't make any sense - I'm running it on my Linux server where Steam is not being installed at all. VAC doesn't go that far, one of the reasons why ASF is VAC-free by definition, since it doesn't require Steam client being running or even installed at all.

If they wanted to get rid of ASF, they'd contact me, or start building defense mechanism right in the Steam network, since this is the only thing with which ASF interacts.

7 years ago
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this

7 years ago
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lol

7 years ago
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Well, idling/messing around with games and/or Steam while playing VAC-secure games is pretty silly. :P

7 years ago
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i turned off idle master and still get kicked ,always need to restart steam after getting ez profit from cards :D

7 years ago
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Is ACF affected too?

7 years ago
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7 years ago
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No.

7 years ago
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Ouh not necessarily. I got this communique, even I turned off idler ><
<Now Im waiting... 7 days ban ;_; >

7 years ago
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If you are running any of the following software, please disable it while playing.

if you only run the idle alone it will not cause that, only if you are doing both

7 years ago
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The news surely sucks, but if it's limited for when you play a VAC game it's not a big deal.

For the hidden thing, well that's really nice... ( ͡° ͜ʖ ͡°)

7 years ago
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Jup i got it yday ,needed to rr pc and verify integrity of game files ,it happened in 2nd game ,i have no idea why vac let me play first game .

7 years ago
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Powershell? the win 10 kinda default cli????

7 years ago
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PowerShell (including Windows PowerShell and PowerShell Core) is a task automation and configuration management framework from Microsoft, consisting of a command-line shell and associated scripting language built on the .NET Framework

7 years ago
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There is no default. Also when needed win uses CMD

7 years ago
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If anyone plays CSGO they've probably had the "An issue with your computer is blocking the VAC system" error before as this has been around for the last few years and happens all the time while playing games like CSGO. People get kicked from the game then it sends you to the link which you've linked so that you can fix the problem. The reason you get kicked is because something is blocking Vac from working. It could be quite a few things which cause the error.

I don't think it has any effect on idling it's just that it could be one of the reasons of you being kicked from a Vac enabled game if idling while playing. I wouldn't run any third party programs while playing any Vac enabled game any way just to be safe. :D

7 years ago*
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I had that damn error while trying to play TF2 and the problem lasted for almost a year before I figured it out. I wasn't idling or anything. It turns out it was because TF2 and Steam were installed on an encrypted hard drive. I had to install both to an unencrypted drive/partition before it would stop kicking me out of TF2. I never got this error with L4D2 or CSGO even though they were both installed on the same drive.

This took months of going back and forth with steam support and only after I happened to mention that TF2 was installed on an encrypted drive and they said to install it to an unencrypted one. But that alone didn't work without the Steam client also being installed on an unencrypted drive which they didn't mention at first. So solving this was very annoying.

I also realized installing Steam to an encrypted drive made a mod for Just Cause 2 to stop working. I didn't understand why it worked at first and then when I returned to the game months later it would crash the game everytime when loading the main menu.

So apparently Steam and some games don't like being on encrypted drives.

7 years ago
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It's a tough error to find, I'd played CS since day one of Steam and never had any problems then after 11 years it started appearing. After doing me own digging trying to fix the problem I noticed that each time I verified the game cache it always fixed DirectX. So each time I had the error I'd just reinstall the DirectX from the install folder and everything would work again.

A few times it never worked so I'd have to go through their work through which by now had collected data from people having the problem, only other thing which I used was CCleaner (all settings turn on) but I used it every day while others said it was causing their problems it never seemed to affect me.

I still get the problem from time to time even while watching the Majors through CSGO which is weird as I'm not actually on any game server so Vac shouldn't have any problems. It's a weird error and one which I don't think will go away easy.

7 years ago
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everybody panic

lol at the list containing

CCleaner
Powershell
IObit Start Menu 8
Process Hacker

7 years ago
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I stopped using CCleaner years ago when I realized it was doing more harm then good.

7 years ago
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Powershell? Seriousle? What are we going to do when they delete CMD from Windows 10 in the next updates?

7 years ago
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Delete cmd? that would be stupid, but its microsoft

7 years ago
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Already deleted on Insider previews, forcing to use Powershell instead. It's basically the same but better.

7 years ago
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its not the same. it also needs more linux aliases for commands. learning powershell its kinda useless for me

7 years ago
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ok, i read the news and had a look over the preview. CMD is not going to be deleted, the just changed the default to powershell

7 years ago
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I thought if you played a vac game while running an idler it always did that? This is something new then?

7 years ago
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I got a "Vac authentification error" 1 month ago while playing csgo, after using Idle Master. (I used it for about 2 years without any problems)
Not so "new" but Steam idlers was not in the list yet. Now it's official.

7 years ago
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Yeah, I feel like I've heard that before too

7 years ago
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I guess I should stop ASF while playing 100℅ Orange Juice.. :/
(It has VAC-stuff).

*edit: just tried playing the game while running ASF and I don't get disconnected

7 years ago*
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Do you have a special set up or some other trick because normally ASF should automatically stop idling that account when you're playing a game ;)

7 years ago
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While not idling anything, it will run app 753 for hours, and sometimes I got disconnected because ASF using my account while I using it. :P
http://steamcommunity.com/groups/ascfarm/discussions/1/133257636767280210/

Probably related, but I'm not sure about it

7 years ago
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Interesting. I've never had that myself but I understand the potential issue now.

7 years ago
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It's a problem if you have slow internet connection.
If not, you can ignore this.. ¯_(ツ)_/¯

7 years ago
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As I recently found out my internet is too slow to host SharePlay on PS4 (strangely playing Watch Dogs 2 when my friend was hosting SharePlay worked fine) but luckily it suffices for streaming videos and most Steam related things.

7 years ago
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I got the same error twice in the last week, so I can confirm it exists :D It's just a scare, then a nuisance in a single-player game, but wouldn't rusk getting that error in a competitive online game

7 years ago
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Ban adam, ban ban ban!

7 years ago
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ASF randomly starts idling while I am playing a game, making Steam show an error that my account connected from another location and I am thrown offline until I log back in again. I found that incredibly annoying since ASF is supposed to auto-off (and it generally does) but when I use a gamepad ASF seems to think the lack of keyboard and mouse use means I am not doing anything. (Like old screen savers used to do). Now I make sure ASF is closed when I am playing a game, sadly this was the whole point of using ASF over IM because I was always worried I would forget to turn it off before playing a secured game.

Edit: This happens constantly for me not just every once in a while.

7 years ago
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Edit: This happens constantly for me not just every once in a while.

This will happen if you have unstable connection that will result in your Steam client being disconnected from Steam network, releasing game lock that you acquired. There is no solution for this, as I still want ASF to automatically resume idling when somebody does finish a game in legit way, so the only suggestion for this would be to pause/exit ASF at the time of playing, or playing in offline mode.

7 years ago
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It shouldn't be unstable, I don't use Wifi, and it is a direction connection to the almost brand new modem (fibre). Can't really play offline when playing an online game and I don't tend to get kicked/dropped from online games which I assume I would be if my connection was dropping out. As mentioned, I have just been exiting ASF every time, but I liked the idea that I wouldn't have to do that. That I could just leave it running on my server (also direct connected to one of the ports on the modem, not wifi) and never having to think about it. Also tried running it on my machine (to see if for some reason running it off the server was the issue) but it didn't help. It's a great tool though, so I appreciate your effort so thank you for that. I did try reinstalling it and remaking the profiles ensuring I was not messing anything up by following the wiki and in tool guide.

TL;DR: I wasn't trying to say it is impossible for my connection to be unstable, just that it hasn't really been showing other signs of it. If it is unstable, I am going to be very disappointed because this was supposed to be an upgrade to their prior discontinued service.

Edit: Would it be possible (for those of us that might have unstable connections apparently) to have an optional double check system option. Ie. ASF detects the player may have stopped playing, wait 15s/30s/60s and check again. If still not locked, resume. I'm not sure how long a server will let you disconnect for before booting you in most online games, but I assume it can't be longer than 60s so any instability I (and others) may be experiencing can't be lasting longer than a few seconds at most.

7 years ago*
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That could be possible as further enhancement.

7 years ago
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That would be great!

7 years ago
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Thank you, I see you added this in the latest release!

7 years ago
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Yes, although it's not fully tested yet :).

7 years ago
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I did not play 100% Orange Juice again after I got IdleMaster. :(

7 years ago
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But it's pretty fun.. D:
and salty

7 years ago
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Perhaps most notable of all, Valve just implicitly provided official acceptance of the use of steam idling software.

7 years ago
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They are not going to ban, just answering questions why people get error messages

With that being said, why would anyone run an idler while playing any game? They won't ban idlers because those are the biggest spenders on steam

7 years ago
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Valve spent a very long time avoiding answering questions about whether they permitted idling software or not. I'm just noting that they finally broke silence on that, and confirmed that they view it as acceptable, by the manner in which they just presented it.

7 years ago
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Valve hardly ever gives answers to any topic..

7 years ago
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And when they do, it's either crazy delayed or utterly nonsensical. :P

Hence why this is so unusual. :'P
Though they've gone against things within their FAQ so many times that it really still doesn't mean anything. :X
It's interesting, nonetheless. :)

7 years ago
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7 years ago
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This is what I was thinking

7 years ago
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I was in that line of thought as well. :)

7 years ago
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second that.

7 years ago
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Sooth deducing to reduce a bit of news to a useful truth.

7 years ago
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Perhaps most notable of all, Valve just implicitly provided official acceptance of the use of steam idling software.

This. The rest seems a non-news to me.

7 years ago
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It's not much more than the acceptance that they exist and are used. It is in one list with DLL injectors, cheat engines, and process hackers. The use of those certainly is not accepted (for VAC enabled games).

7 years ago
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I trust Valve about as far as I can throw them. I never farm cards while playing any other Steam game whether VAC enabled or not. I am kind of attached to my nearly 10 year old account.

7 years ago
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and people who have spent tons on Steam probably would feel the same.

7 years ago
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I wasn't even aware one could run idling software while playing a game. Or would that be idling an alt account while playing a game on a main account? Either way, I only ever idle when I'm not playing or even only when I'm fully disconnected from Steam. :)

7 years ago
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Idlemaster permitted running a game while idling. Since it was hooked into the Steam client, it would be the same as starting two games through the client. I would guess that the hook that it used is what gets picked up by the VAC system. There are still a lot of people using Idlemaster even though it was discontinued last year..

7 years ago
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Ah, interesting. I didn't know that. Thank you for the information. :)

7 years ago
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There are still a lot of people using Idlemaster even though it was discontinued last year..

There's this bug/feature, when you close some games you instantly get card. Thanks to that, just by starting IM and doing few "next game, next game, next game" you can idle all your cards in few minutes instead of ASF hours.
If you're lucky to get that bug.

So. professional idler should first use IM to quickly run through his library of games and after he stops getting cards that way, run ASF for whatever didn't bug.

7 years ago
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Said bug is on Steam's end and as such if you have it set up right you can do the same with ASF or even manually if you have the games installed.

7 years ago
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Manually would require installing games instead of just idlemaster.exe, while I didn't really dig into ASF more than just setting account to idle them so you might be right.

7 years ago
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Who idles while playing Vac enabled servers? (Or while playing period?)

ASF stops idling the moment you start playing by default so this doesn't affect it.

7 years ago
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From what I collect, the issue might be with the software running (ASF.exe), not the action of idling by itself. Even while not idling, ASF still may do other steam related actions, such as accepting incoming trades.

7 years ago
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But it can still idle on other accounts. The question is whether that triggers the message (or w/e is the thing it shows).

7 years ago
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Doubt it since that is not how VAC works.

7 years ago
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Well, this doesn't seem to work the same way VAC bans do. I seems to be that even running the software is a problem.

It remains to be seen what happens.

7 years ago
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I used to, at least until until reach 2 hours :X

Just a way to optimize time

Never heard about someone banned for it, everyone said it was safe so I thought it was

But now I'll be careful

7 years ago
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Idling games that use VAC was always safe as VAC applies to servers not the games themselves. Whilst there were no reports of bans for idling whilst also connected to a VAC secured server that was always advised against.

7 years ago
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Not 100% true, I've met with several packets indicating VAC offline scan triggered by Steam client itself, with no game running whatsoever. I don't want to spread panic since it's pretty rare and I'm not sure why it happens, but it exists, and I'd not risk using anything that can trigger VAC when using Steam alone.

7 years ago
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From what I have been told (so it might be completely wrong) that has something to do with CSGO aka if you dont own CSGO that doesnt happen.

7 years ago
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This is Steam network related packet that has "VAC" as a source, I'm pretty sure it affects other games too, CS:GO is just most popular.

7 years ago
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Ah, network packet, I should learn to read >.> I was thinking something else.
But yea VAC can do very weird and sometimes amusing things.

7 years ago
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I never idled while playing anyway. I think what you're saying is nothing new? I remember ppl talking about this a year ago or so.

7 years ago
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My idling programs are on a different PC than my gaming PC, so no worries.
The page lists virtual machines as well, and I usually keep them on while playing other games, so nothing really to worry about anyways.

7 years ago
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this is really sucks

7 years ago
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So actually VALVe finally told us:

"yes we are aware of Idlemaster and we authorize you to use it. just simply don' idle AND play, ok"?

wonderful.

(how to pass from panic to "wonderful" in 20 minutes)

7 years ago
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and we authorize you to use it.

That part is quite a stretch. But feel free to interpret it that way if you like :).

7 years ago
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It's just the usual mishmash. They told us that we shouldn't use it in a specific scenario, but no info about their general approach :D

7 years ago
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