Checklists for software errors, setup, and tool workflows.

Fix DNS Probe Finished NXDOMAIN After Changing DNS

After updating your DNS settings—perhaps to use Google Public DNS or Cloudflare—you might see the...

How to Fix Limited Connectivity on Windows 11 Wi-Fi

You connect to Wi-Fi but see "Limited connectivity" or "No internet, secured." Yo...

Windows Search Index Not Finding Files: How to Fix

Windows Search stops finding files for a variety of reasons. The index might be corrupted, settin...

How to Fix Cloudflare 522 Error (Firewall Blocking)

If you see a Cloudflare 522 error, the connection between Cloudflare and your origin server timed...

Fix Git 'refusing to merge unrelated histories' Error

When you try to merge two Git branches that don't share a common commit history, Git stops wi...

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...