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EA94100
EA94100
New Member
September 23, 2025
Question

ANDROID Forticlient VPN issue when using Hotspot connection

  • September 23, 2025
  • 2 replies
  • 2053 views

Hello all,

 

We have a major issue with the Forticlient VPN connection.

.

After many tests, here is what we know :

 

  1. When using the Forticlient app on an ANDROID tablet/phone with a direct wi-fi connection, it works flawlessly

 

  1. When using the Forticlient app on an ANDROID device by using a phone's mobile data to connect the device to the internet, it doesnt work. We get the error message « show error:revoked by android reboot Â» Capture d'écran 2025-09-23 110646.png

 

  1. When using the Forticlient app on an IOS device, it works perfectly either with direct wifi or a through a mobile hotspot.

 

We are always using the latest iOS, Android or Forticlient version available.

We have this issue since April 2025.

Our IT service is clueless. 

 

Does anyone here could help to sort this out? 

 

Thank you very much and have a great day!

 

FortiClient 

2 replies

Sheikh
Staff
Sheikh
Staff
September 23, 2025

Hello @EA94100 

 

Which version of FortiClient is it? Have you attempted using any other versions of the FortiClient?

I mean, check with other versions to see if this helps you.

 

regards,

 

Sheikh

 

 

If you have found a solution, please like and mark it as solved to make it easily accessible for everyone.
    EA94100
    EA94100Author
    New Member
    September 23, 2025

    Hello ! Thanks for replying :)

     

    Ive tried with several android Forticlient 7.4.x versions. All not working with the hotspot connection. 

    Not sure i can downgrade to a 7.x version. Or at least i dont know where to look and how to do it.  

     

    Sheikh
    Staff
    Sheikh
    Staff
    September 23, 2025

    Hello,

     

     - Check the certificate on the FortiGate side and ensure that it is valid. 

     - Try updating OS updates on mobile device.

     

    regards,

     

    Sheikh

    If you have found a solution, please like and mark it as solved to make it easily accessible for everyone.
      EA94100
      EA94100Author
      New Member
      September 23, 2025

      Im gonna ask my IT service but i imagine they already checked the validity.

       

      Plus it should be valid right? The Forticlient VPN connexion works perfectly if using a Router wifi connection. The only case it doesnt work is when the android tablet where the Forticlient app is installed is using an hotspot connection from a phone mobile. 

      All OS are up to date, on both side (tablet or the mobile phone used to share the connection). 

       

      Basically : 

       

      Android tablet/phone+ wifi (router) -> OK

      Android tablet/phone + Wifi (from hotspot ) -> NOK

      Windows + Wifi (router) -> OK

      Windows + Wifi (hotspot) -> OK but we had to desactivate IPV6 on the PC side.

      iPad + Wifi (router) -> OK

      iPad + Wifi (hotspot) -> OK

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