
Fix OneDrive Sync Error 0x8004de40 – Authentication Failure
You're working on a file when OneDrive pops up an error: "Authentication failed – Error c...

You're working on a file when OneDrive pops up an error: "Authentication failed – Error c...

You open a new tab in Windows Terminal and see nothing — just a blank, unresponsive window. This ...

You might see Windows Defender consuming a lot of memory, and then get error code 0x80070002 when...

You keep getting prompted for your PIN or password in a loop when trying to sign in to Windows Se...

You open Windows Security, trigger an update, and the progress bar sits at 0% for minutes or hour...

When setting up OneDrive on a new Windows 11 machine, you might encounter a sync error that menti...