Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You open Command Prompt, type python, and see 'python' is not recogniz...

Fix Windows Update Error 0x80070002 Using DISM
If you see Windows Update error 0x80070002, it usually means the update system can't find a n...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer
You run git clone https://example.com/repo.git and get:
fatal: unable to acc...

Repair Corrupt Windows Search Index Database
When Windows Search stops returning files or emails, or the search box hangs, a corrupt index dat...

Fix Chrome Status Access Violation After Update
After a Chrome update, some users see a status access violation error when openi...

Fix Windows Security App Access Denied Error
When you open Windows Security (formerly Windows Defender Security Center) and see an 'Access...