If you are facing AOS Service start issue with error code 100 then you will not able to resolve issue without doing some modification in database table.    Error Investigation:   After searching error description in event-viewer I found following message.   Object Server 01:  Fatal SQL condition during login. Error message: "The internal time zone version number stored in the database is higher than the version supported by the kernel (7/8).    After that I search on google then found solution below.   select rows from SQLSystemVariables  table in particular database then check value of  SYSTIMEZONESVERSION  column it will be 8 you need to update this value to 7 then you will able to start service.   Once service get started then you can update kernel version with 8 by using setup.   I hope you have an idea to resolve this issue.  
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