Checklists for software errors, setup, and tool workflows.

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Fix Windows Search Returning 404 Not Found Error

When you search for a file or app in Windows and click a result, you may see a ‘404 Not Found’ er...

How to Fix Windows Security Not Responding

Windows Security (formerly Windows Defender Security Center) may stop responding, hang on launch,...

Fix Windows Security Blank Screen Not Loading

You open Windows Security (formerly Windows Defender) and see nothing but a blank white or gray s...

Fix Remote Desktop Update Error 0x80070002

When updating Remote Desktop Connection on Windows, you may see error 0x80070002. This typically ...

How to Fix SSH Host Key Verification Failed Error

You try to SSH into a server and get a message like WARNING: REMOTE HOST IDENTIFICATION HAS...

Fix Windows Update Token Expired Error 0x80070057
You see error code 0x80070057 when trying to run Windows Update, often with a message about a tok...