After enabling CheckLHC you might notice repeating error messages stating that your File-DSN is invalid. This is because the Health Monitoring and Recovery service runs as the LOCAL SERVICE but the Independent Management Architecture (IMA) Service runs under the NETWORK SERVICE.
You will have to grant the LOCAL SERVICE account full access in the following directory as the IMA Service only grants those rights to the SYSTEM and NETWORK SERVICE.
C:\Program Files (x86)\Citrix\Independent Management Architecture\
vor 2 Monaten