Free Weekend Games (Crusader Kings II - "Exists in your account")

and advanced warfare too only 3 days :D

buy the game, its one of the best strategies out there

This has been a longstanding problem that there really is no solution to, short-term (ie., to allow you to enter). The only thing you can do is wait until the middle of the week, when there's not going to be a free weekend running, and manually sync your account then. That way, in future it will always sync during the week. I have my account set to sync on a Wednesday, which seems to work well.

The bad thing is that weekend the game price is %OFF and there are many GA for that game (usually) and you cant enter in any of them. I dont know how, but be nice to find some way (if exist) for SG to recognice when a game in our libraries is "temporal" or permanent, of course it depend on how steam manage this weekend "passes".

Pro tip

SteamGifts can't fix this, because Valve doesn't offer any way to tell you don't own it. As far as this site is concerned, those free weekend games are the same as anything else in your library. The site admin can't do anything about this, the problem is at Valve's end.

The only way I know how to get around this is to have your account sync on Monday, Tuesday, or Wednesday so it won't update during the free weekend promotions.

http://www.steamgifts.com/discussion/KkRjY/how-can-i-remove-free-weekend-games-solved-by-myself-enter-to-understand