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tjzee
New Member
November 9, 2025
Question

Telemetry error during Install Wizard

  • November 9, 2025
  • 1 reply
  • 237 views

Hi everyone,

I’m having an issue with FortiManager Cloud and I’m hoping someone can point me in the right direction.

 

I have a FortiGate HA pair already added into FortiManager Cloud. Everything was working fine until today, when FMG began showing errors whenever I try:

 

  • Retrieve Config
  • Install Preview
  • Policy Package Diff

    This seems to be a system-level object FMG expects, but it no longer exists in the ADOM database. Because of that:

     

    • Retrieve Config fails
    • ADOM revision cannot be synced
    • Install Preview tries to remove “system.telemetry default”
    • Any push/install fails

     

     

    Even when I manually create a telemetry object in Objects, the ADOM still throws the same error.

     

    I’ve checked:

     

    • Device database
    • Policy package
    • System objects
    • Device mapping
    • ADOM-level objects

     

     

    But the TELEMETRY object does not appear anywhere in the ADOM tree.

     

    This looks like an FMG Cloud ADOM DB corruption / missing system object, not a FortiGate configuration problem.

 

1 reply

AEK
SuperUser
SuperUser
November 9, 2025

Hello

Which FMG version?

Did you perform integrity check?

diagnose pm2 check-integrity all
diagnose dvm check-integrity
diagnose cdb check adom-integrity
diagnose cdb check policy-packages
diagnose cdb upgrade check +all

You can share the output once done.

Meanwhile it is a good idea to open a ticket.

AEK