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VPN Application Blocked by Security Settings [Solved]
7 min. read
Updated onJanuary 29, 2024
updated onJanuary 29, 2024
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Key notes
VPN connections can be blocked for several reasons, such as geo-restrictions, network administrator settings, or even your security settings, such as firewalls, antivirus, and/or anti-spyware programs.
Usually, VPN clients require specific ports and protocols in order to function as they should, and these should be allowed for this to happen successfully. Otherwise, you may encounterVPN blocked connectionerrors.
You may contact your VPN vendor for a complete list of ports necessary for your VPN client, or you could create relevant exceptions in your security settings.
At the same time, different users reported such issues with the VPN that caused this error message:
This failure is likely the result of a firewall, extension, or VPN setting blocking the request. please check your settings for more help with the resolution.
If none of this helps, try some of the solutions below and see what works.
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What is blocking my VPN connection?
There are various elements that can block your VPN connection, including yourfirewall blocking the VPNor antivirus program. However, other factors that generate VPN blocking are:
So before going to our descriptive solutions, be sure you fully understand the reasons for blocking VPN usage.
What to do if security or firewall settings blocked VPN connection
1. Disable your security software
This is how to allow VPN through Firewall on Windows 10. Try and disable your firewall, antivirus, or anti-spyware program and see if your VPN connection unblocks.
Do this by uninstalling your VPN and the security software that is blocking your VPN. Then install the VPN and the security program again.
2. Add an exclusion
Note:Usually, ports 500 and 4500 UDP are used by VPNs, while port 1723 is used for TCP. If you find these not working, add a new rule or exception to allow them in Windows Firewall Advanced Settings.
3. Change your VPN software
If you find that yourSecurity or Firewall settings might be blocking your VPN connection, the first thing that you should try is an effective VPN called ExpressVPN.
Unlike other VPNs, the auto-configuration feature makes it easier than ever to avoid conflict between software, thus eliminating the possibility of encountering this same issue.
This VPN was created by Kape Technologies with speed and efficiency in mind, and the result speaks for itself.
What makes ExpressVPN stand out, even more, is the fact that the company doesn’t keep any logs of your app usage, and offers private DNS for each server from 94 different regions.
ExpressVPN
4. Open ports
To allow your VPN to pass through your security settings, open the following ports: IP Protocol=TCP, TCP Port number=1723, and IP Protocol=GRE (value 47).
Ensure that these ports are allowed on Windows Firewall with the corresponding network profile.
Note:if you are running on the same server RRAS-based NAT router functionality,Do Notconfigure RRAS static filters, because they are stateless and NAT translation requires a stateful edge firewall like ISA firewall.
5. Create a new inbound rule
6. Change Allow app settings
7. Turn off SSL monitoring
The instructions to do this depend on which VPN you are using. However, here are the steps you can take if you’re using NOD32 or Kaspersky:
NOD32:
Note:IfHTTPS filtering modeis greyed out, setAntivirus and antispyware > Protocol filtering > SSLtoAlways scan SSL protocol. Restore the previous setting after changing theHTTPS filtering mode.
Kaspersky
8. Change Adapter Settings
9. Enable rule for PPTP
If your VPN requires PPTP, you can perform this process:
10. Reset your firewall or reinstall your VPN
If security settings block the VPN application, you may need to reset your firewall, and if that doesn’t help, reinstall your VPN.
If you’re using Norton firewall, reset it by clicking Settings > Firewall > General tab > Reset beside Firewall Reset, then restart your computer, and the firewall rules will be created again as you use your VPN or programs that access your network/internet.
Even more, what happens when yourVPN is blocked at school, hotel, college, or university? Rest assured that our guide can help.
Were you able to resolve the problem? Let us know in the comments section below.
More about the topics:security,VPN,windows 10 fix
Milan Stanojevic
Windows Toubleshooting Expert
Milan has been enthusiastic about technology ever since his childhood days, and this led him to take interest in all PC-related technologies. He’s a PC enthusiast and he spends most of his time learning about computers and technology.
Before joining WindowsReport, he worked as a front-end web developer. Now, he’s one of the Troubleshooting experts in our worldwide team, specializing in Windows errors & software issues.
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Milan Stanojevic
Windows Toubleshooting Expert
Before joining WindowsReport, he worked as a front-end web developer. Now, he’s specialized in Windows errors & software issues.
