When attempting to start a 64bit SQL scenario, the scenario will not run due to a 'Mis-match' error between the Master and Replica's databases even though the instance of both has been configured symmetrical.
This issue can occur when either the Master or Replica hosts not only have the 64-Bit SQL instance but also have a 32-Bit Instance of SQL Server installed.
To resolve this issue perform one of the following tasks:
- Install a duplicate 32-Bit instance on the machine that does not have one installed already. i.e. If the Master had both a 64-Bit Default instance & 32-Bit named instance installed then the Replica would need the 32-Bit named instanced installed as well.
- Uninstall the 32-Bit instance from the host that has it installed.