Symptoms
O365 APS 1.2 executing configuration script task fails with the following output:
Method name
taskExecuteApplicationInstanceScript
Method edit_customer calling failed.
Reason:Attempt to write a read-only database attempt to write a readonly database.
Cause
Insufficient permissions for storage.db on MOSI GW server.
Resolution
Check application pool user permissions for the storage.db file. It should have read and write access for successful provisioning process.