Issue:
A customer is using the following command line to switch an endpoint from one SMP that is currently utilizing HTTP, to another SMP that utilizes HTTPS.  This is the command line being used: 

AeXAgentUtil.exe /Server:dsms.example /web:https:dsms.example.net:443/Altiris

That does not work. 

Steps:
The customer enabled the diagnostics on the agent and had them utilize the edit URL option. 
Open the agent GUI, with diagnostics enabled, and on the left side of the screen click edit server URL. 
Click the secure connection button and click OK.  This worked.

ITMS 8.x

Recommendation:
Try using only /web, without the /server switch.
In ITMS 7.5 we needed to use “server” and “web” switches together, it seems now that in ITMS 7.6 and later there isn’t this necessity (according to AeXAgentUtil.exe /?)

Question:
Clarification on “In ITMS 7.5 we needed to use “server” and “web” together, it seems now that in ITMS 7.6 there isn’t this necessity (according to AeXAgentUtil.exe /?)”

Response:
That’s correct, in ITMS 8.0 and later the help was updated and now it 100% contains valid working commands.
In 7.5 you have to use both commands, in 8.0 and later you don’t even have to add “Altiris” to the URL, just specify HTTP or https, the host and optional port, all other parts will be ignored.

Aexagentutil /web=https://host:5760
Aexagentutil /server=host is the same as Aexagentutil /web=http://server:80