How to Run an Nginx Reverse Proxy with Docker
Set up an Nginx reverse proxy with Docker Compose: route multiple apps on one host, configure proxy_pass, use Docker networks, and add TLS.
Sysadmin Desk Jun 27, 2026 9 min read
All Guides
270 step-by-step IT guides and fixes across Windows Server, Microsoft 365, Teams, Windows, Docker, and virtualization.
Trim or Cut a Video Without Re-encoding on Windows
Trim or cut a video without re-encoding on Windows free using WSL and FFmpeg. Cut clips instantly with no quality loss using stream copy, all offline with no uploads.
MCSA Guru Team Jun 26, 2026 4 min read
How to Use DISM and SFC to Repair Windows 10 or 11
Repair corrupted Windows files the right way: run DISM RestoreHealth first, then SFC scannow. Learn what each does, how to read the CBS log, and offline repair.
MCSA Guru Team Jun 26, 2026 7 min read
Make a GIF From a Video on Windows Free
Make a high-quality GIF from a video free on Windows using WSL and FFmpeg. Use a palette for clean colors, control size and frame rate, all offline with no uploads.
MCSA Guru Team Jun 25, 2026 3 min read
How to Fix the Teams Meeting Add-in Missing from Outlook
The Teams Meeting button gone from Outlook? Fix the missing add-in: enable the COM add-in, clear disabled items, match the user, re-register, and handle new Outlook.
MCSA Guru Team Jun 25, 2026 8 min read
Extract Audio (MP3) From a Video on Windows Free
Extract audio as MP3 from a video free on Windows using WSL and FFmpeg. Pull the soundtrack losslessly or as MP3, batch a whole folder, all offline with no uploads.
MCSA Guru Team Jun 24, 2026 3 min read
How to Stop Users from Auto-Forwarding Emails Outside the Company
Stop Microsoft 365 users from auto-forwarding email outside your company. Use the outbound spam policy, anti-phishing, and mail flow rules to block external forwarding.
MCSA Guru Team Jun 24, 2026 8 min read
Convert MOV or MKV to MP4 on Windows Free
Convert MOV or MKV to MP4 free on Windows using WSL and FFmpeg. Remux without re-encoding for instant results, or re-encode for compatibility — all offline, no uploads.
MCSA Guru Team Jun 23, 2026 3 min read
Best DNS Settings for Domain Controllers in Windows Server
How to configure DNS on domain controllers the right way: partner-first then loopback, AD-integrated zones, forwarders, and how to avoid the DC islanding problem.
MCSA Guru Team Jun 23, 2026 7 min read