Checklists for software errors, setup, and tool workflows.

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Latest checklists

You try to send or receive email in Outlook and see an error: "Proxy authentication failed"

Fix OneDrive Sync Stuck on 404 Not Found Error
If your OneDrive sync is stuck and you see a 404 Not Found error, it usually means the sync engin...

How to Fix Windows Search Error 0x80070005
When Windows Search fails with error 0x80070005, it usually means the search indexer doesn't have...

Fix SSH Connection Refused on Windows Terminal
If you see ssh: connect to host [hostname] port 22: Connection refused in Windows Te...

Fix Windows Defender Not Starting After Update
After a Windows update, you might see that Windows Defender (now called Microsoft Defender Antivi...

Fix Windows Search Indexer Dependency Conflicts
When Windows Search stops returning results or the indexer crashes repeatedly, a dependency confl...