Unable to edit Accounts after upgrade from old 32 bit Servcedesk plus MSP to the lates 64 bit version

Unable to edit Accounts after upgrade from old 32 bit Servcedesk plus MSP to the lates 64 bit version

We have upgraded older version (32-bit) of ServiceDesk plus MSP to the latest 64bit version following the process on your website. Everything seems to be working ok so far apart from “Accounts” option within service desk. If we try to do any operation related to Accounts e.g create new account, we get this error message “Sorry an error has occurred. Unknown error occurred while processing your request.”

Can you help please?

                  New to ADSelfService Plus?