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.
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.