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

Fix Outlook High Memory Usage and Permission Denied on PST

Outlook users sometimes encounter two related problems: high memory usage (often 1 GB or more) an...

How to Fix Windows Security Service Unavailable

When Windows Security shows "Service unavailable" or a red banner, your antivirus and firewall pr...

How to Fix systemd Service Restarting Repeatedly Error

Fix OneDrive Sync Port Already Allocated Error on Windows 10

You might see the error "OneDrive sync port already allocated" on Windows 10 whe...

Fix 'Port Already in Use' Error with No Visible Process

When you try to start a server or service on a specific port, you might see an error like "port a...

Fixing Nginx Permission Denied for Upstream Unix Socket

If you see connect() to unix:/var/run/php-fpm.sock failed (13: Permission denied) in...