After upgrading the Windows 10 May 2020 (20H1/Version 2004) feature update, some Chrome users reported that Google would keep logging into their accounts and force them to sign in again. Once you close Chrome and then open it again, the problem will recur — you have to sign in again. Uninstalling and then reinstalling the browser does not solve the problem.
In fact, the problem existed in the preview of Windows 10 Version 2004, but because the Chromium team had difficulty reproducing the problem, they did not intend to investigate further. Fortunately, Tavis Ormandy, a Google security researcher, had the same problem, prompting the team to investigate the issue further.
The problem appears to be caused by the Windows Data Protection API (DPAPI), which exists in Windows 2000 and subsequent versions to help protect data that includes private keys, stored credentials, and other confidential information.
It’s not clear what caused the problem, but Tavis says it could spread to the same Chromium-based Edge browser.
Before Google fixes this problem, Tavis recommends temporary solutions as follows
1. Turn off the Chrome.exe process. Make sure it’s completely closed by opening Task Manager (Ctrl, Shift, Esc).
2. Hold down the Windows-L lock system.
3. Enter a password or a verification system configured with Windows Hello to unlock the system.
4. Reopen Chrome