Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Fix Windows Defender File Locked Permission Denied Error

You try to open, edit, or delete a file and get an error like File locked by Windows Defend...

Fix Windows Update Error 0x800f0922: Pending Install Failed
You see a message that a Windows update is pending install, but it fails with error 0x800f0922. T...

Fix Windows Defender SSL Certificate Error Not Working
You might see an error like 'Windows Defender cannot check for definitions because of an SSL cert...

Fix OneDrive Sync Port Already Allocated Error
You open OneDrive and see a sync error: “Port already allocated”. This usually means ano...

Fix OneDrive Sync Proxy Server Network Error
If you see a 'proxy server network error' while using OneDrive, it usually means your PC is tryin...

Fix Windows Security Authentication Error 0x80070035
When you try to access a shared folder or printer on another computer, you might see an error:

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Windows Defender File Locked Permission Denied Error

Fix Windows Update Error 0x800f0922: Pending Install Failed

Fix Windows Defender SSL Certificate Error Not Working

Fix OneDrive Sync Port Already Allocated Error

Fix OneDrive Sync Proxy Server Network Error

Fix Windows Security Authentication Error 0x80070035

`Topic paths`

`Quick titles`