Error : ": The following error occurred on agent installation: Class not registered"

KB1821 | Last review: Apr 14, 2014 | Netwrix Auditor for Windows Server | 4.0 and above
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Symptoms
You get the following warnings after each data collection:
<server>: The following error occurred on agent installation: Class not registered (Exception from HRESULT: 0x80040154(REGDB_E_CLASSNOTREG))
<server>: The following error occurred when analyzing changes for server 
<server>: Agent operation failed due to the following error: Failed to update the agent on the following server: <server>
<server>: Windows Registry audit permissions are not enabled for this server.
Cause The most common reason for the these errors is Windows Firewall and blocked port 1322.
 
Resolution In order to resolve these issues:
1. Disable the Windows Firewall service on the target server and make sure that port 1322 is opened: 
- Click Start > Run. Type services.msc and press Enter. 
- Locate the Windows Firewall service, stop it and set to Disable. 

2. Make sure the following services are started/stopped on the target server: 
- Windows Instrumentation Management (WMI) - Started 
- Remote Registry - Started 
- Remote Procedure Call (RPC) - Started 
- NetBIOS TCP/IP Helper - Started 

3. Install the agent service manually: 
- Copy the installation package (FullAgentSetup.msi) from the Windows Server Change Reporter installation folder to the problematic machine. 
- Run it as administrator. 

 
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