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

Fix Outlook 404 Not Found Error on Windows 10

If you see a '404 Not Found' error when opening Outlook or clicking a link in an email, it usuall...

Fix Outlook High CPU Usage Caused by Antivirus Scanning

Symptoms and Likely Cause

You notice Outlook consuming 50% or more CPU, making your syste...

Fix BitLocker 502 Bad Gateway During Recovery Key Retrieval

When you're locked out of a BitLocker-encrypted drive and the recovery key page returns a 502 Bad...

How to Fix Windows Security Virus Protection Turned Off

If you see a warning that Windows Security virus protection is turned off, it usually means the b...

Fix Outlook Connection Refused Error 0x80040115

Outlook error 0x80040115 usually appears as "Connection refused" or "Cannot start Microsoft Outlo...

Fixing Certbot Certificate Renewal Failed Error Code

You run certbot renew and get an error code instead of a renewed certificate. This i...