All of my 1040 submissions are being returned due to this error.  Partnerships and S Corps are being acknowledged as usual.  The code indicates that "VendorControlNum" in "FilingSecurityInformation" in the return header must have a value.  

It goes on to say that this is a timing difference and has been corrected but the same error repeats.  I have tried refreshing updates, have checked my EFIN and all the usual suspects.  I have noticed that if I go to Tool>Options>Firm /Preparer Info that the entry for Customer Account Number (CAN) is blank.  I am not sure if a number should be in here but it cannot be entered through this screen.

Support has had me do the setup over again (not reinstall) and re license but it has not worked.  I have not been able to file a single 1040 for this season yet (I was able to file a 2019 1040).

Support told me today that they are aware of the issue and that I am not the only one.  They said they will email me when they have a solution but that I otherwise cannot check on the progress.  

Has anyone else had this or a similar error an do you have a way to fix it?