Error Code 49: Invalid Credentials when trying to login to LSA management software
LSA fully supports English OS only.
The problem is caused by the fact that the credentials check is based on the English language, so when the Operating System is set to another language than English, the program has an issue with starting up and throws out the error code 49 Invalid Credentials.
To be able to use the LSA app in a non-English OS, the LSA configuration file needs to be edited.
Follow these steps:
Depending on the language, this must be adjusted here:
As soon as you have carried out point 3 and saved it, you must restart the LSAService. After following these steps, you should be able to log back in without any problems.
Source:https://www.thomaskrenn.com/de/wiki/LSI_Storage_Authority_Error_Code_49_Invalid_Credentials