Challenge
The following alerts can be seen in SCOM "Veeam Collector: Health Service dropped data" for agents located at the Veeam collector servers, additionally "Veeam Collector: Health Service workflows failed" alerts come to SCOM console.
The settings of SCOM agent are correct (please see KB1026), clearing OpsMgr cache helps for a short amount of time.
The OperationsManager log on Veeam Collector machine shows events 4506, 1103 and 21405.
Cause
The issue is caused by unsupported decimal symbol setting under Veeam Collector service account.
Solution
Steps to resolve the issue are:
1) Log in to Veeam Collector server under Veeam Collector service account
2) Open Control Panel -> Region and Language ->Additional Settings
3) Change Decimal symbol to "." (dot)
4) Restart Veeam VMware Collector service
5) Clear OpsMgr cache (please see KB1043)
More Information
If you have any questions or problems, please contact Veeam Support at https://my.veeam.com/#/open-case/step-1