Checklists for software errors, setup, and tool workflows.

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Fix Git SSL Certificate Problem: Unable to Get Local Issuer

If you see fatal: unable to access 'https://...': SSL certificate problem: unable t...

Fix DNS Probe Finished NXDOMAIN on Custom DNS Server
If you see “DNS PROBE FINISHED NXDOMAIN” in Chrome or another browser while using a custom DNS se...

Fix npm run build Failed with PostCSS Error
You run npm run build and see a PostCSS error. This often happens after updating pac...

Fix 'Git Remote Origin Already Exists' Without Deleting
When you run git remote add origin <url> and see fatal: remote origin al...

Fix Windows Update Service Not Running with DISM Restore Health
You try to run DISM /Online /Cleanup-Image /RestoreHealth and get an error saying th...

Fix Remote Desktop Connection Blocked by Firewall
When you try to connect to a remote PC using Remote Desktop (RDP) and get an error like “Remote D...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Git SSL Certificate Problem: Unable to Get Local Issuer

Fix DNS Probe Finished NXDOMAIN on Custom DNS Server

Fix npm run build Failed with PostCSS Error

Fix 'Git Remote Origin Already Exists' Without Deleting

Fix Windows Update Service Not Running with DISM Restore Health

Fix Remote Desktop Connection Blocked by Firewall

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