Checklists for software errors, setup, and tool workflows.

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Fix Git SSL Certificate Error: Unable to Get Local Issuer Certificate

When cloning or pulling from a Git repository, you may see:

fatal: unable to access...

Fix Windows Update Service Not Running After SFC Scan
If you ran an SFC scan to fix system file corruption and now the Windows Update service won't...

Fix DNS Probe Finished NXDOMAIN Caused by Antivirus Blocking
You try to load a website and see DNS_PROBE_FINISHED_NXDOMAIN in Chrome, or simi...

Fix Windows Defender Real-Time Protection Stuck on Turning Off
You open Windows Security, go to Virus & threat protection, and see Real-time protection stuc...

How to Fix Error 0x80070005 in Windows Update
When Windows Update fails with error 0x80070005, it usually means the system doesn't have the...

How to Fix Cloudflare 521 Error (Port 443 Blocked)
When you see a Cloudflare 521 error, it means Cloudflare’s servers cannot connect to your origin ...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Git SSL Certificate Error: Unable to Get Local Issuer Certificate

Fix Windows Update Service Not Running After SFC Scan

Fix DNS Probe Finished NXDOMAIN Caused by Antivirus Blocking

Fix Windows Defender Real-Time Protection Stuck on Turning Off

How to Fix Error 0x80070005 in Windows Update

How to Fix Cloudflare 521 Error (Port 443 Blocked)

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