Please follow the steps given below to configure explicit permissions over ADAudit Plus installation directory for the account used by the tool.
1. Go to install location For E.g, C:\Program Files<x86>\ManageEngine\ADAudit Plus\
2. Right click on 'ADAudit Plus' folder -> properties
3. Edit the ACEs (permissions), add the user account which is being by the tool and provide that with 'Full control' over the installation directory
4. Stop ADAudit Plus service
5. Open task manager -> terminate the processes corresponding to the tool (java.exe, postgres.exe, wrapper.exe)
6. Open command prompt (Run as Administrator)
7. Proceed to perform the upgrade as instructed
Hope it helps.
Regards,
ADAudit Plus Team