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pattu37
pattu37
New Member
February 27, 2018
Question

Impossible to connect to VPN: Permission denied (-455)

  • February 27, 2018
  • 1 reply
  • 328998 views

Hi!

 

I'm a first time user and I have no clue what to do, so please, be patient :)

 

I downloaded FortiClient v 5.6.5.1150 and I'm trying to connect to the VPN, but it goes up to 45% and shows the error message "Permission denied (-455)". I've read the forums, but nothing works. Also, the admin hasn't really been helpful, since they will only say "update your computer. Other users have taken theirs to a technician"...

 

They asked me to use a VPN SSL connection, they gave me the remote gateway address, told me to save the login data and that's basically it.

 

So I did what they told me to, I updated all that I could, and the QuickTime player is the only software I couldn't update. I'm not sure if it has anything to do, but it's an issue shown in the Vulnerability analysis in the FortiClient console.

 

I've also read threads that claim THE answer is to change the configuration in Internet Explorer and uncheck TLS 1.0 and 1.1, but that didn't work either.

 

Any ideas?

1 reply

YvesCa
YvesCa
New Member
February 27, 2018

Hi Pattu

For me each time I had the -455 code, it was a problem with bad account or bad password.

Maybe you have to check the conection parameters on your fortigate.

 

You have to change the TLS configuration for the -5 code.

 

Good luck

Yves

    pattu37
    pattu37Author
    New Member
    February 27, 2018

    Thank you so much for the quick reply.

     

    I told them that the credentials might be the problem, they gave me another user's credentials and it connected immediately. Still, they asked me to try again with the previous credentials and it did not work. So yes, that was the problem!

     

    Thank you again!

    YvesCa
    YvesCa
    New Member
    February 28, 2018

    Great, happy to have helped you

     

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