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Fix: SonicWall VPN stopped working / not connecting

8 min. read

Updated onOctober 4, 2023

updated onOctober 4, 2023

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Many users use variousVPNtools to protect theirprivacy, however, some reported that SonicWallVPNstopped working on theirPC. This can be a problem and leave yourprivacyin danger, but today we’ll show you how to fix SonicWallVPNproblems.

There are various issues that can occur with SonicWallVPN, and speaking of issues, here are some common problems that users reported:

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SonicWall VPN stopped working, how to fix it?

Solution 1 – Try a different VPN client

SonicWallGlobal Clientis a goodVPNclient, but if you can’t fix this issue, perhaps this is the perfect time to consider switching to a differentVPN.

There are many greatVPNclients on the market, and if you want a reliableVPNclient, you should try out the one recommended below

It is owned by Kape Technologies and is a service that has been around for many years, having a really good reputation. They have expanded their network and are continuously improving their servers.

Here are thekey featureswe like about this VPN:

Private Internet Access

Solution 2 – Check your antivirus

According to users, if SonicWallVPNstopped working on yourPC, the problem might be related to your antivirus. Sometimes your antivirus can interfere with certain applications and prevent them from connecting to the Internet.

To fix this problem, users are suggesting to add yourVPNto the list of exclusions in your antivirus and check if that helps. Alternatively, if your antivirus has a firewall built-in, you can check it as well and make sure that it’s not blocking yourVPN.

If that doesn’t solve the problem, try disabling certain antivirus features or disable your antivirus altogether. In some rare instances, you might have to remove your third-party antivirus in order to solve this problem.

If removing the antivirus fixes the problem with yourVPN, we suggest that you consider switching to a different antivirus solution. There are many great antivirus tools on the market, but if you want a reliable antivirus that won’t interfere with your system in any way, we suggest that you try outBitdefender.

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Solution 3 – Restart your router

According to users, if SonicWallVPNstopped working, the issue might be related to your modem/router. If you have any issues with theVPN, perhaps the problem is related to your router.

To fix the problem, users are suggesting to restart your router and check if that solves the problem. This is quite simple to do, and you can do it by following these steps:

Once your router is up and running, check if the problem is still there. Bear in mind that this might be just a temporary solution, so you might have to repeat it if the issue reappears.

Solution 4 – Enable NAT Traversal in your firewall

According to users, sometimes your firewall settings can cause issues with theVPN. If SonicWallVPNstopped working, the issue might be related to NAT Traversal feature on your router.

Several users reported that in order to use SonicWallVPN, you need to have this feature enabled. To do that, just follow these steps:

After doing that, check if the problem is still there. If you can’t find this feature, be sure to check your router’s instruction manual for detailed instructions.

Solution 5 – Reinstall your wireless adapter drivers

According to users, if SonicWallVPNstopped working on yourPC, perhaps the problem is related to the wireless adapter drivers. To fix the problem, users are suggesting to reinstall your wireless adapter drivers.

Most wireless adapter drivers come with dedicatedsoftware, so in order to perform a complete reinstall, it’s advised to remove both thesoftwareand the drivers itself. First, we’ll remove the Wi-Fi software.

There are many ways to do that, but the best method is to use uninstallersoftwaresuch asRevo Uninstaller. By using the uninstaller software you’ll ensure that the driver software is completely removed, along with all of its files and registry entries.

You can also remove the drivers for the wireless adapter. To do that, follow these steps:

After doing that, go to the SonicWall Client settings and resetNAT TraversaltoAutomatic. Now connect to the hotspot and check if the problem is still there.

Solution 6 – Make sure that you’re using DHCP

Sometimes problems with yourVPNcan occur if you’re using a static IP Address. To fix the problem, users are suggesting switching to DHCP on your router. This might a bit advanced solution, so before you proceed, we advise you to check your router’s instruction manual for step by step instructions.

Solution 7 – Disconnect from all SonicWall VPN clients

Many users have SonicWallVPNclients installed on multiple devices, and that can sometimes be a problem. If SonicWallVPNstopped working on yourPC, it’s possible that other devices are interfering with it.

To fix the problem, it’s advised that you log out of all other SonicWall clients and then try to log in to your SonicWallVPNclient. Several users reported that this method worked for them, so you might want to try it out.

Solution 8 – Disable Dead Peer Detection

According to users, sometimes certain network features can interfere with yourVPN. Several users reported that SonicWallVPNstopped working due to theDead Peer Detectionfeature.

To fix the problem, it’s advised that you disable the Dead Peer Detection feature completely. After doing that, the problem with yourVPNshould be resolved and everything will start working again.

Solution 9 – Change your configuration

Sometimes issues with SonicWallVPNcan be caused by your configuration. If your client isn’t configured properly, you might encounter this and many other errors. However, you can fix that by adjusting your settings.

According to users, you need to enable theKeep aliveoption on both ends of the site-siteVPN. In addition, change the assignment toZone WANinstead ofVPN. After doing that, the problem should be resolved and everything will start working again.

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

According to users, sometimes certainVPNsettings can interfere and cause problems with yourVPN. If your SonicWallVPNstopped working, the issue might be related to the ISAKMP packet sent option. According to users, you can fix this problem simply by doing the following:

After making these changes, check if the problem is still there.

Solution 11 – Make sure that Disable SPI Firewall option is enabled

According to users, sometimes your router settings can interfere with SonicWallVPNand lead to various issues. Users reported this problem with the Netgear router, and in order to fix the problem, you just need to change a single setting. To do that, follow these steps:

After doing that, check if the problem is still there.

There are numerous problems withVPNthat can occur, and if SonicWallVPNstopped working on yourPC, be sure to try all of our solutions and let us know which solution solved the problem for you.

Fix: SonicWall VPN stopped working / not connecting#

SonicWall VPN stopped working, how to fix it?#

Solution 1 – Try a different VPN client#

Private Internet Access#

Solution 2 – Check your antivirus#

Solution 3 – Restart your router#

Solution 4 – Enable NAT Traversal in your firewall#

Solution 5 – Reinstall your wireless adapter drivers#

Solution 6 – Make sure that you’re using DHCP#

Solution 7 – Disconnect from all SonicWall VPN clients#

Solution 8 – Disable Dead Peer Detection#

Solution 9 – Change your configuration#

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

Solution 11 – Make sure that Disable SPI Firewall option is enabled#