Just upgraded our development vCenters from VCSA 6.5 U1g to 6.7 and I'm running into issues with VUM. While trying to add the latest HPE vibsdepot URLs, I noticed there doesn't appear to be a way to modify VUM download sources and settings in the HTML5 Client yet. I then went into the Flash/FLEX client and noticed that the Proxy settings section shows a red error with text "A general system error occurred". If you click the "Edit..." button it gives you error message "An internal error has occurred - Error #1009". Restarting the VUM service and the Flex client service on the VCSA did not resolve the issue. Anyone run into this yet?
FYI we ended up solving this issue by resetting the VUM database by following this KB: https://kb.vmware.com/kb/2147284.
When you get to step 4, the command varies slightly for VCSA 6.7: /usr/lib/vmware-updatemgr/bin/updatemgr-utility.py reset-db
According to VMware support, the issue is caused by a proxy.dat file that is used for encrypting and decrypting the proxy password in the VUM database. During the 6.5 to 6.7 upgrade, the file gets replaced and the VUM service can't decrypt the proxy settings in the database. Hopefully they'll get this fixed in the next version of 6.7 so future upgrades don't end up having this issue.