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

How to Fix 7-Zip 'Cannot Open File as Archive' Error on Valid Files

You double-click a file in 7-Zip and get "Cannot open file as archive." But you know the file is ...

How to Set Windows Update to Manual Install Only

If you want to control when Windows updates are installed—for example, to avoid unexpected restar...

Windows 10 Activation Troubleshooting Checklist

When Windows 10 shows an activation error, the cause is usually a recent hardware change, a corru...

Fix Outlook Connection Timeout When Sending Emails

You try to send an email in Outlook, but after a long pause you see an error like “Connection to ...

Fix Microsoft Store App 404 Error on Windows 10

When you try to open or download an app from the Microsoft Store on Windows 10, you might see a 4...

Fix Chrome SSL Certificate Error: Invalid Common Name