Hi Suzanne,

Thanks for using our Product Support Community. I’m sorry for the delay in replying.

To register and use Sage Data Objects (SDO), Sage Accounts needs to write information to the sdoeng.usr file. If the current user doesn't have the required permission to do this or the permission is lost, the serial number and activation key won't work and the SDO connection won’t be established or will be lost.

To ensure that Sage Accounts has the required permission to write to the sdoeng.usr file, log on to your computer as an administrator and enter the serial number and activation key again if required.

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