Software comparisons, alternatives, and tool decision notes.

Fix Windows Security Token Expired After Password Change

If you've recently changed your Windows password and now see errors like 'The security token has ...

Fix Windows Defender Error 0x80073b01 (Crash on Startup)

If Windows Defender crashes on startup with error code 0x80073b01, the antivirus service may be f...

Windows Security Scan Stuck at 99%: Practical Fixes

You run a Windows Security (formerly Windows Defender) scan, it reaches 99%, and then… nothing. I...

Jupyter Kernel Not Starting in VS Code: Quick Fixes

You open a Jupyter notebook in VS Code, try to run a cell, and the kernel either hangs on "Starti...

Microsoft Teams Service Unavailable on Mac: How to Fix

When Microsoft Teams shows a 'service unavailable' error on your Mac, it usually means the app ca...

Fix Outlook Email Sync Failed on Ubuntu

Outlook email sync fails on Ubuntu: what to check

If Outlook (via web browser, Evolution,...