Hi Gisabun, the update was for .Net 4.

With the help of Track-It support we found out that the account used by the service no longer had access to the required directories via the UNC path.

I'm still uncertain as to which update, if any, might have caused this issue but we have used the local path instead and now the required Track-It service is running.

Wish I had a more conclusive answer but for now, there you have it.