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

Chrome Profile SSL Certificate Error: Step-by-Step Fix

You open Chrome and see a warning like “NET::ERR_CERT_COMMON_NAME_INVALID” or “Your connection is...

How to Check DNS Configuration for Windows Activation

If Windows activation fails with an error like “0x8007232B” or “DNS name does not exist,” the pro...

Fix Docker Build 'exec format error' for ARM64 Images

When building a Docker image for ARM64 (e.g., on Apple Silicon or AWS Graviton), you may see an e...

Fix Microsoft Teams Blank Screen by Clearing Cache

If Microsoft Teams opens to a blank white or gray screen, or gets stuck on the loading spinner, a...

Resolving npm Dependency Conflicts After an Update

Fix Windows Update 504 Gateway Timeout Related to Firewall Settings

If you see a 504 gateway timeout when running Windows Update, it usually means the update server ...