Unbale to Add Device - Forimanager "Probe Fail"

[ka2tik]

Hello All,   I want to add Fortigate device running version 5.2.6 to Fortimanager running version 5.4.2. (It's compatible). When I try and add the Fortitgate device to the FortiManager I get "Probe Failed" message.    Both FortiManager and Fortigate network connectivity and both can ping each other. I have Centralised Management on the Fortigate set to FortiManager and as well FMG is allowed on the mgmt Interface.   Even if I check in the logs I can see a successful connection using TCP/541 from the FortiManager to the Fortigate.

What could be the issue with "Probe Fail" ? Does anyone have faced such issue and how to overcome it ?

[chall_FTNT]

What is the FGT model?  And do you have other FGTs being added?  I assume you are trying to add the new FGT to a FOS 5.2 ADOM?

[ka2tik]

FGT model is 1500d. I have all FGT 1500d n 800 and none of them is getting add to FGM. Indeed I'm trying to add FGT to 5.2 ADOM.

[Thangavel]

you have to enable FMG access on FGT interface (which one your using as MGMT IP  address)