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ghillius
ghillius
New Member
April 7, 2026
Question

FortiClient EMS Cloud iPhone enrollment failing

  • April 7, 2026
  • 2 replies
  • 183 views

I’m using the 3-seat free FortiClient EMS Cloud offering that came with my FortiGate licensing and have run into a strange issue enrolling an iPhone.

My Fedora 43 Linux laptop registers successfully to the same EMS Cloud tenant, so the tenant and license appear to be working, at least in general. However, my iPhone will not register and always gives:

“Registration Failed, Error: The invitation code is invalid.”

What makes this confusing is that the invitation code does not seem to be truly invalid, because every failed iPhone attempt still causes the invitation Use Count to increase in EMS Cloud. At the same time, the failed attempt does not consume a license seat.

What I’ve already tried:

  • confirmed I am using the full FortiClient iOS app, not VPN-only

  • tried multiple invitation types

  • tried existing and newly generated invitation codes

  • tried bulk invitations

  • tried QR code onboarding

  • temporarily disabled Enforce User Verification

    • signed out and back into EMS Cloud

    • confirmed EMS now shows user verification is not enforced

  • created fresh invitation codes after that

  • removed and reinstalled the FortiClient app on the iPhone

Current behavior:

  • iPhone always returns “invitation code is invalid”

  • invitation Use Count increases

  • no seat is consumed

  • Linux endpoint in the same tenant registers normally

So it seems like the code is being accepted far enough to increment the use count, but the iPhone fails before full enrollment completes.

Has anyone else seen this with FortiClient EMS Cloud on iOS?
I’m especially curious whether this is:

  • a known iOS enrollment bug

  • a Cloud EMS tenant issue

  • or some limitation/quirk with the free 3-seat Cloud EMS offering

Any ideas would be appreciated.

Forticlient iOS Version: 7.4.11.0198
iOS Version: 26.4
FortiClient EMS Cloud Version: 7.4.5.2111

2 replies

Jean-Philippe_P
Staff & Editor
Jean-Philippe_P
Staff & Editor
April 10, 2026

Hello ghillius, 

 

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. 

Jean-Philippe - Fortinet Community Team
Jean-Philippe_P
Staff & Editor
Jean-Philippe_P
Staff & Editor
April 22, 2026

Hello again ghillius,

 

I found this answer, can you tell us if it helps, please?

 

Troubleshooting FortiClient EMS Cloud iPhone Enrollment Issue

Based on the information provided, it seems like you've already taken several steps to troubleshoot the issue. Here are some additional suggestions and considerations:

Possible Causes and Solutions

  1. iOS Enrollment Bug:

    • Check for Known Issues: Verify if there are any known issues with the specific version of FortiClient for iOS (7.4.11.0198) or the iOS version (26.4) you are using. Sometimes, specific combinations of app and OS versions can cause unexpected behavior.
    • App Update: Ensure that the FortiClient app is updated to the latest version available on the App Store. If a newer version is available, it might contain fixes for the issue you are experiencing.
       

  2. Cloud EMS Tenant Issue:

    • Tenant Configuration: Double-check the configuration settings in your EMS Cloud tenant. Ensure that all necessary permissions and settings are correctly configured for iOS devices.
    • FortiCare Support: Consider reaching out to FortiCare support to see if there are any backend issues with your EMS Cloud tenant that might be affecting iOS device enrollment.
       

  3. Free 3-Seat Cloud EMS Offering Limitation: License Restrictions: While it seems unlikely, verify if there are any specific restrictions or limitations associated with the free 3-seat EMS Cloud offering that might affect iOS device enrollment.
     

Additional Steps to Consider

  • Network Configuration: Ensure that the iPhone is connected to a network that allows communication with the EMS Cloud. Sometimes network restrictions can prevent successful enrollment.
  • Device Logs: Check the logs on the iPhone for any additional error messages or clues that might indicate why the enrollment is failing.
  • Alternative Enrollment Methods: If possible, try enrolling the iPhone using a different method or network to rule out network-specific issues.
     

Follow-ups and Clarification Questions

  • Have you checked for any known issues or updates related to the specific versions of FortiClient and iOS you are using?
  • Have you contacted FortiCare support to verify if there are any backend issues with your EMS Cloud tenant?
  • Are there any network restrictions that might be affecting the iPhone's ability to communicate with the EMS Cloud?

 

If these suggestions do not resolve the issue, it may be beneficial to contact Fortinet support for further assistance.

Jean-Philippe - Fortinet Community Team
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