Dell Unity: Unable to Add vCenter with Unity getting error "Incorrect Network Name or Address - Error Code:409"(User Correctable)

Attempts to add vCenter with Unity fail with error "Incorrect Network Name or Address - Error Code: 409."

Pinging the vCenter Internet Protocol (IP) address succeeds and vCenter Admin credentials are valid.


 

Unity requires ports 8443 and 443 to be open for successful communication with vCenter.

The spx/EMC/CEM/log/cemtracer.log may show the following error:
 

11 Mar 2020 18:44:55 - [VISDKClient_Imp] ERROR - {0:21297:346011814}[21200|20688|dd9ffb40][_setupForConnection @ ../../../components/src/VISDKClient_Imp.cpp:3894] We can not proceed with login. Delete m_pVimService. Return value:8
1
11 Mar 2020 18:54:29 - [VISDKClient_Imp] INFO - {0:21871:60888593}[21200|20688|dd9ffb40][_setLastError @ ../../../components/src/VISDKClient_Imp.cpp:4140] _gSoapError code: 12 _gSoapError faultString: Cannot complete login due to an incorrect user name or password.

This indicates that there is an issue with establishing a connection to the vCenter on port 443. As of vSphere 6.7 U3 and higher, port 8443 is deprecated by Broadcom/VMware.

VMware Blog showing port 443 required:

The vSphere Automation SDK Protocol

Use the netstat -an command to check the port details and confirm ports 8443 and 443 are open.