How to: Fix Sonicwall Vpn Stopped Working / Not Connecting

How to: Fix Sonicwall Vpn Stopped Working / Not Connecting

Here we can see, “How to: Fix Sonicwall Vpn Stopped Working / Not Connecting”

  • SonicWall is a leading security company that provides cutting-edge cybersecurity solutions to its clients.
  • It’s not unheard of, though, for different security systems to clash with one another.
  • If you’re also using SonicWall, for example, you can have issues with your VPN.
  • Check read our tutorial to learn how to get your SonicWall VPN to operate again.

Many people use VPN programs to preserve their privacy, but some have claimed that SonicWall VPN has ceased working on their computers. This can be a concern, putting your privacy at risk, but we’ll teach you how to fix SonicWall VPN issues now.

There are a variety of issues that might arise with SonicWall VPN, and here are a few of the most prevalent ones that customers have reported:

  • SonicWall is a site-to-site firewall. These are some typical SonicWall VPN difficulties, but you should be able to cure them using one of our solutions. VPN can’t ping, connected but no traffic, dropping connection – these are some common SonicWall VPN problems, but you should be able to fix them using one of our solutions.
  • SonicWall VPN no green light – Router problems can sometimes cause this issue to arise. All you have to do to solve it is restart your router.
  • SonicWall VPN is not working — Antivirus software is a common source of VPN issues. Disable your antivirus for a short period of time to see if it helps.
  • User authentication for SonicWall VPN has failed – Because your firewall might sometimes cause this problem with your VPN, you’ll need to alter your firewall settings to fix it.
  • SonicWall VPN is stuck acquiring an IP address – This issue could be caused by your network drivers therefore, you should try reinstalling them to see if it fixes the problem.
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How do I get SonicWall VPN to operate again?

Solution 1: Change your VPN client

SonicWall Global Client is a solid VPN client however, if you can’t fix this problem, now could be the time to switch to an alternative VPN.

There are a lot of amazing VPN programs on the market, but if you want a trustworthy VPN client, you should try the one listed below.

Kape Technologies owns it, and it’s a service that’s been around for a long time and has a solid reputation. They’ve increased their network and are working to improve their servers all the time.

Here are some of the important characteristics of this VPN that we like:

  • If you can’t utilize the specific application, there’s also support for OpenVPN and PP2P/L2TP protocols.
  • To prevent against leaks, dedicated DNS servers are used.
  • AES-256 encryption, SHA256 authentication, and RSA-4096 handshake encryption are all options.
  • You can receive a static IP from your favorite VPN server and use it.

Solution 2: Make sure your antivirus software is up to date

According to users, if SonicWall VPN has ceased operating on your computer, the issue may be caused by your antivirus software. Certain programs may be hampered by your antivirus, preventing them from connecting to the Internet.

To resolve this issue, people recommend adding your VPN to your antivirus’s list of exclusions and seeing if that helps. Alternatively, if your antivirus software has a firewall, check it to ensure it doesn’t obstruct your VPN.

If it doesn’t work, try removing specific antivirus functions or turning off your antivirus entirely. In addition, you may need to uninstall your third-party antivirus to resolve the issue in some rare cases.

If deleting the antivirus resolves the VPN issue, we recommend moving to a new antivirus solution.

Solution 3: Restart your router

According to users, if your SonicWall VPN stops working, the problem could be due to your modem/router. If you’re having problems with your VPN, the issue may be with your router.

Users suggest restarting your router to see if it solves the problem. This is a basic process that may be accomplished by following these steps:

  1. Locate and push the Power button on your router.
  2. Wait a minute after you’ve turned off your router.
  3. To restart it, hit the Power button once more.
  4. Wait for your router to boot up for roughly 30 seconds.

Check if the problem persists once your router is up and functioning. Keep in mind that this may just be a temporary fix, and you may need to repeat it if the problem repeats.

Solution 4 – In your firewall, enable NAT Traversal

According to users, your firewall settings can sometimes interfere with the VPN. If your SonicWall VPN isn’t working, it could be due to your router’s NAT Traversal functionality.

This function must be enabled, according to several users, in order to use SonicWall VPN. Simply follow these instructions to do so:

  1. Open the setup page for your router.
  2. Enable the NAT Traversal feature in the Firewall section.

Check to see whether the problem persists after that. If you cannot locate this feature, consult your router’s instruction manual for more information.

Solution 5: Reinstall the drivers for your wireless adapter

According to customers, if SonicWall VPN isn’t working on your computer, it could be a problem with your wireless adapter drivers. Therefore, users recommend reinstalling your wireless adapter drivers to resolve the issue.

Because most wireless adapter drivers come with dedicated software, it’s best to uninstall both the program and the drivers before performing a full reinstall. So we’ll start by uninstalling the Wi-Fi program.

There are a few options however using uninstaller software like Revo Uninstaller is the best option. You may verify that the driver program and all of its files and registry entries are entirely deleted by using uninstaller software.

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You can also uninstall the wireless adapter’s drivers. Follow these steps to do so:

  1. To access the Win + X menu, press Windows Key + X. Then, from the drop-down menu, choose Device Manager.
  2. Locate your wireless adapter, right-click it, and select Uninstall device from the menu that appears.
  3. Click Uninstall when the confirmation menu opens.
  4. To effect the modifications, simply restart your computer.

After that, go to the SonicWall Client settings and change the NAT Traversal setting to Automatic. Then, connect to the hotspot again to see if the problem persists.

Solution 6: Ensure that DHCP is in use

If you use a static IP address, you may experience issues with your VPN. Users suggest setting your router to DHCP to solve the problem. Because this is a more complicated option, we recommend consulting your router’s instruction manual for step-by-step instructions before proceeding.

Solution 7: Disconnect from all SonicWall VPN clients

Many customers have SonicWall VPN clients on several devices, which can sometimes be a problem. It’s conceivable that other devices are interfering with SonicWall VPN on your PC if it has stopped working.

To resolve the issue, log out of all other SonicWall clients before attempting to log in to your SonicWall VPN client. This strategy has been reported to work for several users, so you might want to give it a shot.

Solution 8: Disable Dead Peer Detection

Certain network features, according to users, can sometimes interfere with your VPN. For example, SonicWall VPN ceased operating for several users due to the Dead Peer Detection feature.

You need to turn off the Dead Peer Detection feature entirely to resolve the issue. The problem with your VPN should be rectified after that, and everything should start operating again.

Solution 9: Modify your settings

Your SonicWall VPN settings can sometimes cause problems. You can get this and other errors if your client isn’t configured properly. You can, however, correct this by altering your settings.

According to users, the Keep alive option must be enabled on both ends of the site-to-site VPN. Also, instead of VPN, modify the assignment to Zone WAN. After that, the issue should be rectified, and everything should operate properly again.

Solution 10: Enable Restrict the size of the first ISAKMP packet sent option

Certain VPN settings, according to users, might sometimes conflict with and cause problems with your VPN. For example, if your SonicWall VPN isn’t working, it could be a problem with the ISAKMP packet transmitted option. According to users, you can easily resolve this issue by performing the following steps:

  1. Open the VPN’s settings.
  2. Restrict the size of the first ISAKMP packet sent should be enabled under the General tab.
  3. To save your changes, click Apply and OK.

Check if the problem persists after making these adjustments.

Solution 11: Check to see if the Disable SPI Firewall option is turned on.

According to customers, your router settings can sometimes conflict with SonicWall VPN, causing various problems. This issue has been documented with the Netgear router, and the solution is as simple as changing a single setting. Follow these steps to do so:

  1. Navigate to Netgear WAN on your router’s configuration page.
  2. Disable SPI Firewall is now enabled.

Check to see whether the problem persists after that.

Various VPN issues might arise, so if SonicWall VPN has stopped working on your PC, try all of our solutions and let us know which one worked for you.


I hope you found this guide useful. If you’ve got any questions or comments, don’t hesitate to use the shape below.

User Questions:

1. What happened to my VPN connection?

Check your network settings, change your server, make sure the right ports are open, disable the firewall, and reinstall your VPN programme if your VPN software isn’t operating properly. If none of the solutions below work, you should contact your VPN provider.

2. My SonicWall VPN keeps disconnecting. Why is that?

TCP timeout settings that are too low, in my experience, are the single most common cause of failed RDS connections via VPN tunnels. The TCP Connection Inactivity Timeout is set to 15 minutes by default when defining a firewall rule in SonicWALL firewalls.

3. What is the procedure for resetting my SonicWall VPN?

SonicWall can be accessed by logging in. Restart your computer by going to Manage | Updates | Restart.

Restart by clicking the Restart button. Confirm the process of restarting. It will take 2 – 4 minutes to boot the SonicWall after you confirm that you want to restart it.

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