If you use Steam regularly, then your client will probably have already updated itself over the weekend. To make sure you’re running the latest version of the client, click the “Steam” tab and select “Check for Steam client updates”.
The update implements some important under-the-hood tweaks, including improvements to Steam Guard and cloud sync.
Change log:
• Fixes Steam not waiting for an in-progress Cloud sync to complete before launching a game.
• Fixed parental control check for Games For Windows games
• Fixed an issue where a user with no friend and no invite sent would not be able to view and accept a pending invite.
• Fix game file validation when opted into a game beta
• Improved Steam Guard feedback for expired email codes
• Improved overlay compatibility with Direct3D 11 games using the latest D3D SDK version