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

PowerShell Reset Settings Troubleshooting Checklist

When PowerShell starts acting up—strange errors, missing commands, or a broken profile—resetting ...

How to Fix Windows Defender Not Working

If Windows Defender won't open, stops responding, or fails to update, you're not alone. This guid...

Fix Microsoft Store 404 Error: Practical Steps That Work

When you open Microsoft Store and see a 404 Not Found error, it usually means the store can't loa...

How to Fix 'Access Denied' to an Outlook Mailbox Folder

You try to open a folder in Outlook—Inbox, Sent Items, or a custom folder—and get an “Access Deni...

How to Fix '7-Zip Cannot Open File as Archive' on Windows 10

When you try to open a file with 7-Zip on Windows 10 and get the error 'Cannot open file as archi...

Fix Outlook Blank Screen After Office Installation

Symptom and likely cause

After installing or updating Microsoft Office, Outlook may open ...