Fixing “Load Failed. The Underlying Connection Was Closed” Error When Installing SuSocialPro

Some users have reported encountering the following error during the installation or initial launch of SuSocialPro:

"Load failed. The underlying connection was closed: An unexpected..."

This issue is typically related to network security settings, firewall rules, or TLS (Transport Layer Security) incompatibilities on the user’s computer. Here's how to resolve it quickly and safely.

✅ Why This Error Happens

The error usually appears due to one of the following reasons:

🔐 Your system blocks secure connections due to outdated TLS protocols.
🌐 Your internet connection or firewall is interrupting the software’s access to online resources.
🛑 Antivirus or security software is preventing SuSocialPro from connecting.
🧱 Windows settings do not support the required .NET framework or HTTPS protocols.

🛠️ Step-by-Step Solutions

1. Enable TLS 1.2 on Your Computer

SuSocialPro requires TLS 1.2 for secure connections. On some older systems, this protocol is disabled by default.

How to Enable TLS 1.2:

Open Registry Editor (Win + R, type regedit, press Enter).

Go to:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v4.0.30319

Right-click and add a DWORD (32-bit) Value:
- Name: SchUseStrongCrypto
- Value: 1

Repeat the same under:

HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\.NETFramework\v4.0.30319

Restart your computer.

2. Add SuSocialPro to Your Firewall & Antivirus Whitelist

Sometimes, firewalls or antivirus software block software communication.

Steps:

Open your antivirus or firewall settings.
Add the SuSocialPro.exe file as a trusted app.
Allow outbound and inbound connections.

3. Check Internet Proxy or VPN Settings

If you're using a VPN or custom proxy, it might be interfering with secure connections.

Temporarily disable VPN/proxy and test the connection again.
If the error disappears, allow SuSocialPro through your proxy or switch to a direct connection.

4. Update Your .NET Framework

SuSocialPro requires a modern .NET environment.

Go to the official Microsoft .NET download page.
Download and install .NET Framework 4.8 or higher.

5. Try Reinstalling with Administrator Rights

Sometimes the software needs higher privileges to connect or install required components.

Right-click on the installer or SuSocialPro icon.
Choose “Run as Administrator”.

🧩 Still Not Working?

If the error persists, please contact SuSocialPro support:

🌐 Website: https://susocialpro.com
📧 Email: [email protected]
📞 WhatsApp: +86 131 4876 8422
💬 Telegram: @susocialpro

📝 Conclusion

The “underlying connection was closed” error can be frustrating, but it’s almost always related to network security or system compatibility settings. By following the steps above, you should be able to fix the issue and start using SuSocialPro without any further problems.

If you're unsure which step to take, start by enabling TLS 1.2 and running the app as Administrator—these fix the issue in most cases.

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