Symantec Management Agent install on new computer fails after upgrade to 7.6 or 8.0 build if "Override the default installation path:" was provided in "Symantec Management Agent Installation Options" earlier.
For Push install, the SMP Console will show Install completed successfully but the Agent is not installed and the error can be seen in Agent Install log (AEXNSC.log) on client.
In Pull install the same error appears in GUI.
If run manually AeXNSC.exe (or AeXNSChttp.exe or AeXNSCHttps.exe), you can see the following popup window message:
Install failed. Error message: Failed to run action: CopyAgentFilesTree
The AEXNSC.log (under C:\ProgramData\Symantec\Symantec Agent\InstallLogs), you can notice the following entries referencing the nonexistent G:\ Drive:
2018-02-16 11:33:10 P:744 T:5868 *ERRR CoreUtil: GetInstallPath could not get the install path from InstallDir - error: 0x2
2018-02-16 11:33:10 P:744 T:5868 INFO Installer: %AGENT_INSTALLATION_FOLDER% => G:\program files\Altiris\Altiris Agent
2018-02-16 11:33:10 P:744 T:5868 INFO Installer: %PLUGINS_INSTALLATION_FOLDER% => G:\program files\Altiris\Altiris Agent\Agents
ITMS 7.6, 8.x
Change in GUI and options for Symantec Management Agent Install Settings page from ITMS 7.6 onwards
Now the Agent will install successfully with both push/pull method.