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

Fix PowerShell 502 Bad Gateway After Windows Update

After a recent Windows update, you may encounter a 502 Bad Gateway error when using PowerShell to...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...

Fix Chrome Login Loop After Password Change

You changed your password, and now Chrome keeps asking you to log in again and again—even after y...

Fix Outlook SMTP 587 Port Already Allocated Error

You try to set up or send email in Outlook, and you see an error about port 587 already being all...

BitLocker Network Unlock: Domain Controller Not Reachable

When BitLocker Network Unlock fails, you may see an error like “Unable to contact domain controll...

Fix Windows Defender Real-Time Protection Grayed Out

You open Windows Security, go to Virus & threat protection, and see that the Real-time protection...