Why do I get an error stating my Sms_def.mof contains invalid information when trying to import it?

I am trying to import my Sms_def.mof to ConfigMgr 2012 in order to customise Hardware Inventory.

However, when I try to do so the file doesn’t open and I get an error that the file contains invalid data.

You need a subscription to access the answer.

This content is restricted to subscribers