
How to Fix Windows Update Authentication Failed Error
When you see 'Authentication failed' while running Windows Update, it usually means the update se...
Software troubleshooting desk

When you see 'Authentication failed' while running Windows Update, it usually means the update se...

You open Task Manager and see svchost.exe using 30% or more of your CPU. This is common in Window...

You see a 'Permission Denied' error with code 0x80070005 when trying to open or sync files in One...

You see an error saying the Windows activation file is locked, or activation fails with a file ac...

You open Chrome expecting your bookmarks, passwords, and settings to be there, but they aren't. S...

If you're using a self-signed certificate for HTTPS on a local server or test environment, Window...