ZyTIMER Service does not start and the "Unable to read the service configuration" message is logged in the '\ProgramData\Zylab\ZyTimer.log' ZyTIMER log file.
The ZyTIMER Service configuration file is corrupt or not reachable.
The ZyTIMER Service configuration file is by default stored in the following location on the server where ZyTIMER service runs: '\ProgramData\Zylab\ZyTIMERService\ZyTIMERService.config'. Make sure that the credentials behind the ZyTIMER Service have sufficient File System permissions to read from this file. If so, check that the ZyTIMER Service configuration file is still stored on the location mentioned above, and that it can be opened in Internet Explorer to validate its XML structure. If not done so already, we recommend to setup a scheduled Backup job for this file so that it can be safely retrieved when necessary.