How to Remote Desktop into Windows 11 from Another PC

Remote desktop access to a Windows 11 machine is essential for IT support, working from home, or helping family members. Traditional tools like Windows Remote Desktop (RDP) require complex network configuration, while cloud-based solutions like TeamViewer need accounts and subscriptions.

CastAngel takes a different approach: a single portable .exe file that runs on any Windows PC with zero installation. This guide walks you through the entire process.

What You’ll Need

• Host PC (the computer you want to access): Windows 7 SP1 through Windows 11, 32-bit or 64-bit
• Client PC (the computer you’re connecting from): Any modern web browser
• Network: Both PCs on the same local network (LAN), or the host PC accessible via port forwarding

No admin rights are required on either machine. CastAngel runs as a standard user.

Step 1: Download CastAngel

Download the appropriate version for your host PC:

• 64-bit Windows (most modern PCs): CastAngel-64.exe (~1.5 MB)
• 32-bit Windows (older machines): CastAngel-32.exe (~1.3 MB)

Not sure which version? On the host PC, right-click This PC → Properties → look for “System type.” If it says “64-bit operating system,” use the 64-bit version.

Step 2: Run CastAngel on the Host PC

Double-click the downloaded .exe file. You’ll see:

1. A disclaimer dialog — read and click Agree to continue
2. A system tray icon (small CastAngel icon near the clock) — right-click it for options
3. The host PC is now ready to receive connections

CastAngel automatically:

• Opens a local web server on port 12377 for screen casting
• Opens a file transfer server on port 12399
• Adds Windows Firewall rules to allow local network access

No manual firewall configuration needed — CastAngel handles it automatically.

Step 3: Find the Host PC’s IP Address

Right-click the CastAngel tray icon → Show IP and Port. You’ll see something like:

IP: 192.168.1.42
Port: 12377

Write down this IP address — you’ll need it for the connection.

Step 4: Connect from the Client PC

On your client PC (the one you’re connecting from):

1. Open a web browser (Chrome, Firefox, Edge, Safari — any will work)
2. Navigate to http://192.168.1.42:12377 (replace with your host PC’s IP)
3. You’ll see a login page — enter any username and password to create a session
4. Click Login

You’re now viewing the host PC’s screen in real-time. You can:

• View the screen with smooth, low-latency video
• Control the mouse and keyboard as if you were sitting in front of it
• Transfer files using the file upload panel

Step 5: Transfer Files (Optional)

CastAngel includes built-in LAN file transfer:

1. While connected, use the file upload area on the web page
2. Drag and drop files (up to 4 GB each) or click to browse
3. Files are saved to the host PC’s desktop, in a folder named after your username

Large files are split into 4 MB chunks for reliable transfer, even on unstable network connections. There’s no file size limit beyond your available disk space.

Connecting Over the Internet (Advanced)

If the host PC is on a different network, you’ll need to make it reachable:

Option A: Port Forwarding (Router)

1. Log into your router’s admin panel
2. Forward port 12377 (TCP) to the host PC’s local IP
3. Forward port 12399 (TCP) for file transfer
4. Connect using your router’s public IP: http://YOUR_PUBLIC_IP:12377

Option B: VPN

Use a VPN like Tailscale or ZeroTier to put both PCs on the same virtual network. Then connect using the host PC’s VPN IP address.

Security tip: CastAngel supports license-based activation. For internet-exposed setups, consider enabling the license requirement to prevent unauthorized access. See our buy page for licensing options.

Troubleshooting

Can’t connect to the host PC

• Check the IP address: Make sure you’re using the correct IP from Step 3
• Check the firewall: CastAngel adds rules automatically, but corporate antivirus may block them. Try temporarily disabling third-party firewall software
• Check the port: Ensure port 12377 isn’t already in use by another application

Screen is blank or laggy

• Network speed: CastAngel adapts to bandwidth, but very slow connections may struggle. Try a wired connection if possible
• Host PC load: Heavy CPU usage on the host can reduce frame rate. Close unnecessary applications

File transfer fails

• Disk space: Check available space on the host PC’s desktop drive
• Permissions: The folder is created on the desktop — ensure the user has write access

Why Choose CastAngel Over Alternatives?

Next Steps

• Download CastAngel — get the latest version
• Buy a license — unlock permanent activation
• Read our LAN file transfer guide for more on file sharing

CastAngel makes remote desktop simple: download, run, connect. No accounts, no clouds, no subscriptions — just a 1.5 MB file that works.