Refer to the exhibit.

https://community.fortinet.com/t5/FortiClient/Technical-Note-FortiClient-fails-to-install-from-FortiClient-EMS/ta-p/193680 The deployment service error message may be caused by any of the following. Try eliminating them all, one at a time. 1. Wrong username or password in the EMS profile 2. Endpoint is unreachable over the network 3. Task Scheduler service is not running 4. Remote Registry service is not running 5. Windows firewall is blocking connection