I have already solved this problem by changing the default user language in mySQL issue resolved
Ok, that will work too 🙂
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Could this cause issues with the data already present in the database of it is an official workaround?
Yes this works!
KB87723 explains how to change the login language of the account that ePO uses for database connections to English.
Does this mean we have to change this db user default language to english , even if the rest of the system is in german? Or is there another way to resolve this issue?
After changing the default language to english and restarting the services I still get the "error occurred while retrieving the requested data, while viewing system information"
While the previously posted workarounds "might" work I would advise to contact mcafee support, as this is a known issue, they provided a hotfix which fixed this issue for me (and you won't have to change anything on the database user)