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

Fix 'Windows Defender Firewall Has Blocked' Error

You see a notification that Windows Defender Firewall has blocked an app or feature. This usually...

How to Fix PowerShell Rate Limit Errors in Microsoft Graph API

When you run a PowerShell script against the Microsoft Graph API, you might encounter HTTP 429 er...

How to Fix Chrome Profile Download Not Working on Ubuntu

If Chrome fails to download a file on Ubuntu—especially profile-related files like bookmarks or e...

Repair Windows Security Installation via Command Prompt

Windows Security (formerly Windows Defender) can sometimes fail to open, show blank screens, or r...

How to Fix Network Errors in Command Prompt on Windows 10

How to Fix Microsoft Teams Service Unavailable Error

When you see 'Service Unavailable' in Microsoft Teams, it usually means the app can't reach Micro...