After the UMS has been updated to version 6.03.130 or higher, it can not reach the download server anymore.
Environment
-
UMS 6.03.130 or higher
Problem
From UMS 6.03.130 onwards, the UMS contacts https://fwus.igel.com (port 443) instead of http://fwu.igel.com (port 80). This may be blocked by a firewall.
Solution
→ Allow https://fwus.igel.com (port 443) in your firewall.