Problem:
Agent Not Installing due to curl.exe/proxy issue
Cause:
It was found that a Windows 2008 R2 server had a Windows environment variable set for HTTP_PROXY which pointed to the customers proxy service
Solution:
Curl.exe uses this same environmental variable, which then the Kaseya agent will use. Once the environmental variable on the server was changed to something other than HTTP_PROXY and changed the related services to run as a local system, the agent installation issue was resolved.
Again, this is not something that is common - however, I thought it would be good information to pass along in the event that other customers may be using this same variable in their environment and are having agent installation issues.