If you're certain this is not an issue with your anti-virus/internet security application and you haven't opted in to the beta, you can try one of the following to see if it resolves your problem: Performing a partial reinstall (keeping your games) After restarting in this manner, the file verification window shouldn't appear, since Steam would have properly closed all of its files when it exited. What you'd do here is wait however long it normally takes to verify files and get into the main Steam interface, and then close Steam with the menu option (or system tray icon) before restarting it. Steam not correctly closing when you shut down your PCĪnother thing that is mentioned in the Steam forums, is allowing Steam to verify all of its files and then closing Steam properly (rather than letting Windows kill it as it shuts down). If you are a member of the Steam beta program, it might be worthwhile opting out of the beta program and reverting to a previous version of Steam (it should do this automatically) to see if this resolves your problem. Try adding exceptions in these applications for your Steam folder and restart Steam to see if this resolves your issue. This issue can be exacerbated by anti-virus/internet security applications blocking Steam from doing what it wants to and reading all of Steam's files as the Steam application attempts to verify them. Anti Virus/Internet Security applications It's worth noting that this is a well discussed issue with no official solutions available, there are plenty of different suggestions on how this can be fixed though and some of these work for some of the people experiencing the problem some of the time, so you'll want to try all of them if you really want to stop Steam from verifying every time you start it. If the window appears every single time you start up Steam, you're probably experiencing an issue with Steam realising it has updated. This window is displayed while the update is installed or verification process is running to provide feedback to you (the user) that something is actually happening, rather than staying completely silent, leading you to think that the application hasn't started. Additionally, Steam will occasionally verify all of its files, to ensure that everything is as it should be.

Steam will always check for updates on startup and download and install them automatically to ensure that you're running the latest version.

Steam stuck verifying login information