Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Fix Windows Security 'Permission Denied' Error When Settings Won't Open

You click Windows Security (formerly Windows Defender) and get a "Permission denied" or "This set...

Fix Task Scheduler 502 Bad Gateway Not Working

If you see a 502 Bad Gateway error when Task Scheduler runs a task that hits a web service or IIS...

Fix KMS Activation Error: Port 1688 Already in Use

When activating Windows via a Key Management Service (KMS) host, you may encounter the error

Fix Windows Search Update Sync Issues

After a Windows update, you might notice that search results are missing, outdated, or not syncin...

How to Check Which Process Is Locking a File in Command Prompt

If you’ve ever tried to delete, move, or rename a file and got an error like “The action can’...

Fix Windows Terminal File Locked Error 0x80070020
When you try to open a file in Windows Terminal and get error 0x80070020, it usually means the fi...