Sophos Puremessage 4.0.3 on Exchange 2016 with CU5

Question

Hi, 
 We just migrated to Exchange 2016 on Windows Server 2016. 
 After the PM4.0.3 installed. I'm not able to open the PM Console. 
 
 The error message: 
 The administration console is unable to connect to the PureMessage service on the local server. 
 The error code is 0x80070005 
 
 I found an old KB related to this error message & followed all the steps but the problem persist. 
 https://community.sophos.com/kb/en-us/37990 
 
 Please help. 
 Thanks.

CoreyStrock · Answer

OK, I figured it out. Or at least I can get the console open now. 
 Go to DCOM like in the link in the OP, then where it says to add PureMessage User, add the local administrators group also. Then it looks like it works.