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

Fix Windows Defender Error 0x80073b01 (Crash on Startup)

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

Task Scheduler Rate Limit Troubleshooting Checklist

When a scheduled task runs too frequently or fails to execute at the expected time, a rate limit ...

How to Fix Chrome Not Opening After Update

After a Chrome update, the browser may fail to open—no window appears, or you see a brief flash a...

Fix Windows Search Indexing Stuck at 99%

You open Indexing Options, see "Indexing complete" at 99%, and it never finishes. This is a known...

Setting Up Windows Security on a Mac: A Practical Guide

If you run Windows on your Mac—whether through Boot Camp, Parallels Desktop, or VMware Fusion—you...

How to Fix Outlook Rate Limit Error in Office 365

Understanding the Error

You may see a message like "Too many requests" or "Server busy" ...