I have an installation of Import Agent (IA) running on Windows 2012 R2 that is crashing out at least once a day.  In the Application event log, I see about 10 of these "did not register with DCOM" errors just before the IA shuts down.

IA was running normally for many months until we had an issue with the c drive running out of space. We added another drive and moved the growing data off of drive c and onto the new drive freeing up about 40% of the drive space on c.

We have repaired the Import Agent installation without any change and we have uninstalled and reinstalled without any change.  Any other ideas on how to fix/get around this error?