
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...

After a Chrome update, you might see a 'connection refused' error when trying to access your prof...

If your Outlook migration stops or errors out partway through, a large PST file is a common cause...

If you're seeing repeated credential prompts, application crashes, or permission errors after cha...

If you click the Command Prompt shortcut and nothing happens, or it flashes and closes, you're no...

OneDrive error 0x8004de40 typically appears when you hit a temporary rate limit. This often happe...