Troubleshooting VPN Client on Wi-Fi Router Is Not Working
This Article Applies to:
All the Wi-Fi Routers that support VPN Client, such as Archer AX20, Archer AX21, Archer AX90, etc.
Issue Description/Phenomenon:
The Wi-Fi Routers that are being discussed here are the models that support VPN Client, which allows users to connect to a VPN server without the need to install VPN software on each device. If you are unable to connect to a VPN server when trying to configure the VPN client on the TP-Link router, this article provides some suggestions that may help you out.
However, if VPN server on TP-Link router is not working, please follow this thread for troubleshooting: VPN Server Doesn't Work Properly on TP-Link Wi-Fi Routers
Troubleshooting Suggestions & Solution:
Step 1
For OpenVPN, please follow this FAQ How to get configuration files from OpenVPN service providers to get correct configuration file and your VPN service credentials, which is the key to accessing the VPN service.
Step 2
Ensure you can successfully connect to the VPN server using a third-party VPN client software like OpenVPN Connect or OpenVPN or WireGuard App for WireGuard VPN on the local PC/Smartphone. This can ensure the .opvn or .conf file is configured and exported correctly.
For example, If you are trying to connect to NordVPN, please don't use NordVPN App since it doesn't require the .opvn at all.
Note: NordVPN service credentials are different from your NordVPN account credentials, namely your email address and your password. You'll need NordVPN service credentials to connect to the VPN using the manual OpenVPN configuration method in the router.
Step 3
If step 2 is confirmed good, but it still fails to connect to the VPN server when uploading the .opvn file into the TP-Link router, be sure the router's firmware is up-to-date. You can check for the updates on the Tether app or on the router web GUI, or you can download it from the local official website and then install it manually.
Step 4
If it still fails, please check the size of the VPN configuration profile you are trying to upload to the router, and how large that file is. You may download and install the Notepad+ application to delete the useless comment in the profile if that is too large, then try uploading it into the router again.
Step 5
It's also suggested to try TCP protocol on the VPN server if it's currently using UDP, then save the file and upload it into the TP-Link router again to check if that works.
If the VPN connection still fails, please comment below on this topic and be sure to provide the following information:
1. Model number, hardware, and firmware version of your TP-Link Router.
2. What kind of VPN server you are connecting to?
3. What kind of VPN type are you choosing on the TP-Link router, OpenVPN, or PPTP VPN?
4. What kind of VPN Client software you were using on the local PC or phone when it was connecting fine? Please test and make sure you can connect to the server with third-party software, such as OpenVPN Connect for OpenVPN and WireGuard App for WireGuard VPN.
5. Which step did you stuck in, any error message or screenshot?
6. Troubleshooting you've done before, and be sure the .opvn file for OpenVPN or .conf file for WireGuard is included when emailing to support.
Related Articles:
If you are not familiar with the VPN, visit Introduction and Configuration Guide of VPN Function on TP-Link Wireless Routers
If you want to check which model supports the VPN Client, visit Routers supporting the VPN Client.
If you are unable to connect CyberGhost OpenVPN Server, please try Manually create the unified format for OpenVPN profile(CyberGhost OpenVPN Server)
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Hi, can your device connected to Archer AX1800 get the internet access via the VPN tunnel? Does it work whe pinging the tunnel IP?
Except failing to ping your VPN server, is there any other connection issue? Please kindly share more details. Thank you~
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Thanks @Marvin_S,
I've made those changes to the .opvn file, here's what it looks like now. Again the gui says that I'm connected to the VPN, but I'm unable to ping the router that is the OpenVPN server from the AX1800 client.
remote [...] 1194
float
nobind
proto udp
dev tun
sndbuf 0
rcvbuf 0
keepalive 10 30
auth-user-pass
client
auth SHA1
cipher AES-128-CBC
remote-cert-tls server
<ca>
-----BEGIN CERTIFICATE-----
[...]
-----END CERTIFICATE-----
</ca>
<cert>
-----BEGIN CERTIFICATE-----
[...]]
-----END CERTIFICATE-----
</cert>
<key>
-----BEGIN PRIVATE KEY-----
[...]
-----END PRIVATE KEY-----
</key>
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Hi, thanks for your detailed sharing~
In your .opvn file, please delete the information below, then you may check the connection again.
ignore-unknown-option cipher data-ciphers
data-ciphers AES-128-CBC
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Hi, yes, I'd love to provide further assistance.
May I know who is your SIM carrier?
Have you tried to put the SIM card into the iPhone and test whether you could still connect to the vpn.uni-tuebingen.de via mobile data?
In the meantime, I will also follow up on your case via email.
Please check whether you can receive my email later.
Thank you very much and best regards.
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I set up a L2TP VPN Client and it keeps in the state of "connecting". I tried all the steps 1-4, though 5 I don't know how to do that. All I know is, that on my other devices the VPN connects successfully with the same settings.
1. Model number Deco BE65-5G, hardware, and firmware version 1.0.3 Build 20240118 Rel. 70837
2. VPN server: vpn.uni-tuebingen. de
3. VPN type on the TP-Link router: L2TP/IPSec
4. What kind of VPN Client software you were using on the local PC or phone when it was connecting fine: barracuda and IOS VPN Client
5. Which step did you stuck in: "connecting"
Can you help me?
Best regards
Fabian
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Model: AX1800
Hardware: Archer AX1800 v3.0, 1.1.4
Firmware: Build 20230219 rel.69802(5553)
The GUI shows me as connected to my OpenVPN server hosted on my router at home - but i'm unable to ping the router that is the OpenVPN server from the AX1800 client.
3. What kind of VPN type are you choosing on the TP-Link router, OpenVPN, or PPTP VPN? -> Open PN
4. What kind of VPN Client software you were using on the local PC or phone when it was connecting fine? Please test and make sure you can connect to the server with third-party software, such as OpenVPN Connect for OpenVPN and WireGuard App for WireGuard VPN. -> I'm able to connect without issue from the OpenVPN app on IOS.
5. Which step did you stuck in, any error message or screenshot? Pings time out. I've tried with firewalls disabled on both the router server and the router client. I believe that there are routes missing from the routing table.
6. Troubleshooting you've done before, and be sure the .opvn file for OpenVPN or .conf file for WireGuard is included when emailing to support.
remote [...] 1194
float
nobind
proto udp
dev tun
sndbuf 0
rcvbuf 0
keepalive 10 30
auth-user-pass
client
auth SHA1
ignore-unknown-option cipher data-ciphers
cipher AES-128-CBC
data-ciphers AES-128-CBC
remote-cert-tls server
<ca>
-----BEGIN CERTIFICATE-----
[...]
-----END CERTIFICATE-----
</ca>
<cert>
-----BEGIN CERTIFICATE-----
[...]
-----END CERTIFICATE-----
</cert>
<key>
-----BEGIN PRIVATE KEY-----
[...]
-----END PRIVATE KEY-----
</key>
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Thank you! The case has been forwarded to the engineers already.
Please check the email later for more suggestions.
Best regards.
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Hello. Thanks for the quick response. The same VPN configurations are set on all devices (type, server IP, username, password, PSK). This configuration does not work on BE95, but it works on others. X60 and Archer are in other houses, in other networks. I can also connect by enabling a VPN connection with the same configurations from my phone and laptop via the BE85 network.
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Hi, Thank you very much for the feedback.
I'd like to escalate your case to the senior engineer directly for further assistance.
In the meantime, since the VPN client configuration of Deco BE85 is exactly the same as Deco X60, Do you mean the same configuration details used to work well on Deco X60, but not on BE85, right?
Is BE85 the new main Deco and Deco X60 now working as the satellite Mesh units? or are they actually on separate Mesh systems?
Wait for your reply and best regards.
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Deco BE85, firmware 1.0.18
VPN - IPSec
VPN status is Connecting any time
VPN is work from my phone normally
I have tried to connect to this VPN server from another router (deco x60 and Archer AX6000). VPN client works fine.
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