Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Setting Up PowerShell on macOS for Azure Management

If you're a Mac user needing to manage Azure resources from the command line, PowerShell is the t...

Fix 'Windows Defender Firewall Has Blocked' Error

You see a notification that Windows Defender Firewall has blocked an app or feature. This usually...

Fix Putty Connection Refused on Port 22

You try to connect to a remote server with Putty on port 22, but you get 'Connection refused'. Th...

How to Restore Windows Security Missing from Start Menu

If Windows Security (formerly Windows Defender) has disappeared from your Start Menu, it usually ...

Fix pip SSL Certificate Verify Failed on Ubuntu

When you run pip install on Ubuntu and see SSL: CERTIFICATE_VERIFY_FAILED

Fix Microsoft Store Connection Refused After Update
After a Windows update, some users see a 'connection refused' error when opening Microsoft Store....