Knowledge base for software setup, errors, and daily tool work.

How to Fix Outlook Rate Limit Error When Sending Emails

If you see an error like “You’ve reached the limit for sending email” or “Try again later” when s...

How to Clear SSH Known Hosts and Fix Host Key Verification Failed

Clear DNS Cache for Windows Update Issues

If Windows Update hangs, fails with error 0x80072ee2, or can't connect to Microsoft servers, a st...

Fix Microsoft Teams Connection Refused Due to Firewall Settings

When Microsoft Teams shows a 'connection refused' error, it usually means a firewall or proxy is ...

Fix Chrome Version Mismatch That Breaks Extensions

You update Chrome, and suddenly some extensions stop working. Or you install an extension, and it...