How to Fix OpenVPN Certificate Verification Failed
You see "certificate verification failed" when connecting to an OpenVPN server. This usually mean...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listMySQL Connection Refused Authentication Error Checklist
You're trying to connect to a MySQL server and you get one of these: ERROR 2003 (HY000): Ca...
How to Fix Windows Security 404 Not Found Error
If you see a '404 Not Found' error when opening Windows Security (formerly Windows Defender), the...
Fix Microsoft Teams Slow Startup by Disabling Hardware Acceleration
If Microsoft Teams takes a long time to load or feels sluggish when you first open it, hardware a...
Windows Defender 502 Bad Gateway: Setup and Troubleshooting Guide
When setting up Windows Defender or updating its definitions, you might encounter a 502 B...
How to Fix BitLocker Version Mismatch Error
You might see a BitLocker version mismatch error when trying to unlock an encrypted drive on a di...
Topic paths
Quick titles
How to Fix Windows Update Error 0x80070643Windows Search Module Setup Configuration FixHow to Fix Windows Update Not DownloadingRemote Desktop Version Mismatch: Causes and FixesHow to Fix Invalid Configuration in Command PromptResolve Task Scheduler Configuration Path IssueHow to Get Windows Security Back After UpdateHow to Install Windows Security on Ubuntu (via Virtual Machine or Wine)