A virtual private network (VPN) is primarily used to protect a user's privacy in the online world and to locate their physical location. Although most of the time they work well, sometimes the user may experience different errors, crashes, or connection problems with their VPN program. When your VPN is not working, is not connecting, or has been blocked, you can try to resolve some issues quickly. Although there are many possible mistakes that a user can encounter with VPNs, there are some that gain more eminence than others; such an error code is VPN error 13801.
13801 VPN Error on Windows 10
The error 13801 expresses the message – IKE authentication information is unacceptable.
IKEv2 (Internet Key Exchange version 2) errors are related to issues with the server authentication certificate. Basically, the computer certificate required for authentication is invalid or does not exist on your client computer, on the server, or both.
IKE authentication information is unacceptable
Here is a brief description of the possible causes of error 13801:
- The computer certificate on the RAS server has expired
- The trusted root certificate to validate the RAS server certificate is missing on the client
- The name of the VPN server as indicated on the client does not match the subject name of the server certificate.
- The computer certificate used for IKEv2 validation on the RAS server does not include "Server Authentication" as EKU (Enhanced Key Usage).
Since users have no control over the server, there is very little to do to solve this problem. And in most cases, the user can contact the virtual private network provider's help desk and have error 13801 repaired.
The 13801 VPN error clearly refers to the protocols used by the VPN service, so you do not have to waste time determining what IKEv2 is for the 1380 VPN error. Find the correct IKEv2 certificate in the provided documentation by the VPN administrator. You can confirm this problem in several ways:
- The certificate does not have the required EKU (Enhanced Key Usage) values assigned
- The computer certificate on the RAS server has expired.
- The trusted root of the certificate is not present on the client.
- The subject name of the certificate does not match the remote computer
Let's look at these options in detail:
The certificate does not have the required EKU (Enhanced Key Usage) values assigned
You can check it by doing the following:
1) On the VPN server, run mmc, add a snap-incertificates. '
2) Expand certificates-certificates-personal, double-click on the installed certificate
3) Click on detail for 'improved use of keys », check if there isserver authentication& #39; below
The computer certificate on the RAS server has expired.
If the problem is caused by this reason, connect the Administrator of the certification authority and register a new certificate that does not expire.
The trusted root of the certificate is not present on the client.
If the client and server are members of the domain, the root certificate will be automatically installed inTrusted Root Certification Authorities. & #39; You can check if the certificate is present on the client here.
The subject name of the certificate does not match the remote computer
You can check using the steps below:
1) On the client, open 'VPN connection properties& # 39 ;, click & #39;General. '
2) In "host name or destination IP address"You will have to enter the"Name of the subject'The certificate used by the VPN server instead of the IP address of the VPN server.
Note: The subject name of the server certificate is usually configured as the fully qualified domain name of the VPN server.
When to call your VPN server administrator
Having to deal with VPN errors can be extremely frustrating, and when you can not solve them independently, the frustration is even greater. This is exactly the case of VPN error 13801. So do not waste time and contact your VPN administrator to make sure that the correct certificate is configured on your PC, which is validated by the remote server.