I run the Data Domain Virtual Edition integrated with Veeam using Boost. My DD-VE was originally deployed as 184.108.40.206, later upgraded to 220.127.116.11, and then 18.104.22.168 which is where it's currently. I'm trying to upgrade and have downloaded the various DDOS RPMs from 22.214.171.124 to 126.96.36.199. With two different ones (including 188.8.131.52) when I do the upgrade precheck it fails with "Registry validation failed" and a note to contact support for help. Since this is the free version of DD-VE I'm not sure if I can open a ticket so I thought I'd post here. The only thing I've found online is references to the registry on the DD if CIFS is enabled. While I use Boost, at one point I enabled CIFS to do a test so I've gone ahead and disabled it and disabled AD authentication completely but that hasn't fixed anything.
Call support - try are always willing to help. just says it a trail and you need help upgrading. This is usually caused by duplicate entries in the backend DB. It requires support to find and clear the issue.