Symptoms

Unable to uninstall or upgrade the clients manually, and the logs show the following error messages: MSI (s) (70:20) [11:20:44:803]: Running as a service. MSI (s) (70:20) [11:20:44:803]: Hello, I'm your 32bit Elevated Non-remapped custom action server. ExecFirewallExceptions: Uninstalling firewall exception2 EMC NetWorker Remote Execution Server (C:\Program Files\EMC NetWorker\nsr\bin\nsrexecd.exe) ExecFirewallExceptions: Error 0x800706d9: failed to remove authorized app ExecFirewallExceptions: Error 0x800706d9: failed to remove application exception for name 'EMC NetWorker Remote Execution Server', file 'C:\Program Files\EMC NetWorker\nsr\bin\nsrexecd.exe' CustomAction WixExecFirewallExceptionsUninstall returned actual error code 1603 (note this may not be 100% accurate if translation happened inside sandbox) MSI (s) (70:94) [11:20:44:975]: Note: 1: 2265 2: 3: -2147287035 NOTE: NetWorker installation logs are stored under %LOCALAPPDATA%\Temp. The log files are saved as NetWorker_TIMESTAMP_PACKAGE.log. The Microsoft Troubleshooter tool displayed the following error: An error occurred while troubleshooting: A problem is preventing the troubleshooter from starting.

Cause

The uninstall/upgrade process was failing because the "Windows Firewall service was disabled." The NetWorker MSI installer uses a "custom action (WixExecFirewallExceptionsUninstall)" to remove firewall exceptions for `nsrexecd.exe`.When the Windows Firewall service is not running, these actions cannot complete, resulting in:"Error 0x800706d9" → "There are no more endpoints available from the endpoint mapper" (commonly occurs when firewall service is disabled).MSI returned "error code 1603," which is a generic fatal error during installation or uninstallation.

Resolution

Enable Windows Firewall Service. Open "services.msc"Locate Windows Firewall (or Windows Defender Firewall).Set Startup type to `Automatic` and start the service. Retry Uninstall. Use the original MSI or "Programs and Features."If Firewall Cannot Be Enabled, Use MSI property override to skip firewall custom action: cmd msiexec /x {ProductCode} REMOVEFIREWALL=0 /qn Why Enabling Firewall Fixed It: By enabling the "Windows Firewall service," the MSI could successfully run the firewall-related custom actions and remove the exceptions.Alternatively, skipping the firewall custom action using `REMOVEFIREWALL=0` bypassed this step, allowing the uninstall to finish.

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