Checklists for software errors, setup, and tool workflows.

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Update Git SSL Certificates to Fix 'unable to get local issuer'

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

Fix Cloudflare Origin Certificate with Let's Encrypt
If your origin server is rejecting the Cloudflare origin certificate—perhaps because of a SAN mis...

Fix 'git remote add origin already exists' Error
When you run git remote add origin <url> and see fatal: remote origin al...

Chrome Memory Not Decreasing After Closing Tabs – Fixes
You close a dozen tabs, but Chrome still eats 2 GB of RAM. This is normal up to a point—Chrome ca...

Fix Windows 11 WiFi Connected but No Internet: IPv4 Settings
You see the WiFi icon connected, but websites won't load. The network shows “No internet” or ...

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

Update Git SSL Certificates to Fix 'unable to get local issuer'

Fix Cloudflare Origin Certificate with Let's Encrypt

Fix 'git remote add origin already exists' Error

Chrome Memory Not Decreasing After Closing Tabs – Fixes

Fix Windows 11 WiFi Connected but No Internet: IPv4 Settings

Fix Remote Desktop Connection Blocked by Firewall

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