Symantec Endpoint Protection Manager (SEPM) upgrade failed and rolled back before starting the database upgrade. There is no Upgrade-0.log created, following error found in SEPM_INST.log:
MSI (c) (18:70) [18:47:56:797]: Product: Symantec Endpoint Protection Manager -- Installation operation failed.
MSI (c) (18:70) [18:47:56:797]: Windows Installer installed the product. Product Name: Symantec Endpoint Protection Manager. Product Version: 14.3.4615.2000. Product Language: 1033. Manufacturer: Broadcom. Installation success or error status: 1603.
Error 1603 indicates a permission issue:
It can be fixed by one of the following steps:
Note: A restart of the server may be required for the permissions to take effect.
Reference Microsoft Article: https://docs.microsoft.com/en-us/troubleshoot/windows-server/application-management/msi-installation-error-1603