Viber is a popular app for making voice and video calls using the internet. Sometimes, Windows 11 users may encounter a VoIP number error while trying to use Viber. This error can prevent calls from connecting properly.
Fixing this issue usually involves checking your settings and ensuring your system is compatible with Viber’s requirements. Fortunately, there are simple ways to troubleshoot and resolve the problem on your own.
This guide will walk you through clear, step-by-step solutions to fix the Viber VoIP number error on Windows 11. Even if you are new to troubleshooting, these instructions are designed to be easy to follow.
By the end, you should have a working Viber app without any VoIP number issues, ready to make calls smoothly again.
Quick Note: What to Check Before You Begin
Before diving into fixes, make sure of the following:
- Your internet connection is stable and working properly. Viber requires a good internet connection for VoIP calls.
- Viber is updated to the latest version. Older versions may have bugs that cause errors.
- You are logged into Viber with the correct account linked to your VoIP number.
- Your Windows 11 system is updated with the latest security and software patches.
These basic checks can save you time and effort if they are already the cause of the problem.
Step 1: Restart Viber and Your Computer
Sometimes, a simple restart can fix temporary glitches causing the VoIP number error. Close Viber completely:
- Click the X button to close the app.
- Right-click the Taskbar and open Task Manager.
- Look for any Viber processes running, select them, and click End Task.
After that, restart your Windows 11 computer to clear memory and reset network connections. Once it boots up, open Viber again and check if the error persists.
Step 2: Check Your Internet Connection and Firewall Settings
A stable internet connection is essential for VoIP calls to work. Make sure your PC is connected to the internet and that the speed is sufficient.
Next, check Windows Firewall or any third-party firewall software that might be blocking Viber’s access:
- Open Windows Security from the Start menu.
- Go to Firewall & network protection.
- Click Allow an app through firewall.
- Find Viber in the list and ensure both Private and Public boxes are checked.
- If Viber is not listed, click Allow another app, browse to Viber’s installation folder, select the executable, and add it.
Blocking network access can cause VoIP number errors, so it’s important Viber can communicate freely.
Step 3: Update Viber and Windows 11
Running the latest software versions fixes many bugs and improves compatibility. To update Viber:
- Open Viber and go to Settings (gear icon).
- Navigate to Help > Check for Updates.
- If an update is available, follow prompts to install it.
To update Windows 11:
- Open Settings (Windows + I keys).
- Go to Windows Update.
- Click Check for updates and install any available updates.
Updated software ensures better support for VoIP services like Viber.
Step 4: Reset Network Settings on Windows 11
If your network configuration is corrupted, Viber might fail to connect correctly. Resetting network settings can fix this:
- Open Settings.
- Go to Network & Internet.
- Scroll down and click Advanced network settings.
- Select Network reset.
- Click Reset now and confirm.
This will remove and reinstall all network adapters and reset related settings to default. Your PC will restart automatically. After reboot, reconnect to your network and try Viber again.
Step 5: Reinstall Viber
If the problem continues, reinstalling Viber can fix corrupted program files:
- Press Windows + R, type
appwiz.cpl, and press Enter to open Programs and Features. - Find Viber in the list, right-click it, and select Uninstall.
- After uninstalling, visit the official Viber website and download the latest Windows version.
- Install Viber and log in again to see if the VoIP number error is resolved.
Reinstalling ensures you have a clean, fresh version of the app.
Alternative Method: Use Viber Web or Mobile App
If desktop issues persist, you can try using Viber’s web version or the mobile app temporarily:
- Open Viber Web in a supported browser and log in with your account.
- Use the Viber mobile app on your smartphone for calls until the Windows app issue is fixed.
This workaround helps you stay connected while troubleshooting.
FAQs
Why does Viber show a VoIP number error on Windows 11?
This usually happens due to network issues, outdated software, or firewall blocking Viber’s access to the internet.
Can restarting my computer fix the error?
Yes, restarting clears temporary glitches and resets network connections, which often resolves the issue.
Do I need a special network configuration for Viber?
No special setup is usually needed, but firewalls and proxies blocking Viber can cause problems.
Will reinstalling Viber delete my messages?
Reinstalling may delete local message history unless you have backed it up or synced with Viber cloud.
Is the VoIP number error related to my phone number?
Not always. It usually refers to problems connecting calls through Viber’s internet service rather than your actual phone number.
When Nothing Works
If you have tried all the steps above and still see the VoIP number error, consider these final options:
- Visit the official Viber Help Center for support articles and contact options.
- Contact Viber support directly through the app or their website to report the issue.
- Check if your antivirus or VPN software is interfering by temporarily disabling them and testing Viber again.
- Try using a different network (such as a mobile hotspot) to see if the problem is network-specific.
These steps can help identify if the problem is outside your PC or app settings.
Conclusion
Fixing the Viber VoIP number error on Windows 11 requires a step-by-step approach starting from simple restarts to checking internet and firewall settings. Keeping both Viber and Windows updated is essential for smooth operation. Resetting network settings or reinstalling the app often resolves deeper issues.
By following this guide carefully, you can restore Viber’s calling functionality without needing expert help. Remember, if nothing works, official support channels are there to assist you further.