Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You launch a notebook, but the kernel indicator stays gray or shows “connecting” for minutes. Thi...

When you try to connect to a MySQL server from a remote client and get ERROR 2003 (HY000): ...

Fix OneDrive Sync Stuck on Network Error
If OneDrive shows a network error and files won't sync, it's often a temporary glitch or a settin...

Setting Up Windows Activation for Ubuntu VM
If you're running a Windows virtual machine on Ubuntu, you'll need to activate it with a valid li...

Fix OneDrive Connection Refused Error 0x8004de40
You see OneDrive error 0x8004de40 with the message "Connection refused." This often happens when ...

Fix PowerShell Crash with Exit Code 0xc0000005
You launch PowerShell, it starts to load, then crashes immediately with exit code 0xc000000...