Support Forum
The Forums are a place to find answers on a range of Fortinet products from peers and product experts.
akhanjer
New Contributor

Unable to connect error -455 on windows server 2019

Hello ,

the below  error appear when try to connecting to VPN on window server 2019 :

 

Capture.PNG

FortiClient 

9 REPLIES 9
Anthony_E
Community Manager
Community Manager

Hello akhanjer,

 

Thank you for using the Community Forum.

I will seek to get you an answer or help. We will reply to this thread with an update as soon as possible.

 

Regards,

Anthony-Fortinet Community Team.
Anthony_E
Community Manager
Community Manager

Hello,

 

I have found this old forum post:

 

https://community.fortinet.com/t5/Fortinet-Forum/Impossible-to-connect-to-VPN-Permission-denied-455/...

 

Apparently, this erros is indicating a credential issue.

 

You can check some replies, the solution is surely in.

 

If not, come back to us and we will try to find another solution.

 

Best regards,

 

Anthony-Fortinet Community Team.
akhanjer

Hello Anthony,

Capture.PNG kindly note that same error # -455 but different message please check the attached image 

Anthony_E
Community Manager
Community Manager

Oh Ok.

 

We will will continue to find a solution then.

 

Regards,

Anthony-Fortinet Community Team.
ac1
Contributor II

OS control is probably enabled in the FortiGate configuration.
Check from: SSL-VPN Portals -> Restrict to a specific OS version

112.png

akhanjer
New Contributor

Hi ,

 

how I can access VPN Portals please check my setting

 

Capture.PNG 

ac1
Contributor II

VPN Portals are located on FortiGate and not on FortiClient. If you do not have direct access you must make this request to the FortiGate manager.
I don't think the setting on FortiGate is manageable so if you want to connect you should have it deactivated.

Markus_M

Host check is a sort of filter from the VPN server, the FortiGate. There is a policy that does not allow you for some reason. The client either has to comply to the policy or the policy has to be adapted on the server.

 

The client cannot circumvent the server policy.

 

Best regards,

 

Markus

Emma
New Contributor II

This error means your device cannot connect to your provider's mail server. It can be anything from no network, intermittent or unstable network, or even a good internet connection in general but inability to reach your specific provider's mail server.

Announcements

Select Forum Responses to become Knowledge Articles!

Select the “Nominate to Knowledge Base” button to recommend a forum post to become a knowledge article.

Labels
Top Kudoed Authors