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

How to Fix Chrome DNS Errors in Safe Mode

If Chrome shows a DNS error like "DNS_PROBE_FINISHED_NXDOMAIN" or "ERR_NAME_NOT_RESOLVED" on ever...

How to Fix Windows Activation File Locked Error

You might see a Windows activation error saying the license file is locked or can't be written. T...

How to Improve Remote Desktop Performance Over VPN

If you're connecting to a remote PC via Remote Desktop (RDP) over a VPN, you've probably experien...

Fix Windows Security High Memory Usage

If you notice Windows Security (formerly Windows Defender) using excessive memory—sometimes hundr...

Fix CMD Service Unavailable Due to Group Policy

Situation

You open Command Prompt and see an error like "Command Prompt has been disabled...

Checklist to Diagnose Chrome Profile High CPU Usage

If Chrome is using 90%–100% of your CPU even with just a few tabs open, the problem is often the ...