Unable to Add Hyper-V Cluster

This issue can occur due to several reasons, including:

1. Problem accessing the Remote Registry of the target machine.

2. Inability to install the BDRSuiteIntegrationService MSI because another MSI installation may be in progress.

3. Disconnection of the target network during installation.

4. Error encountered while attempting to install BDRSuiteIntegrationService with port number 42005.

5. Presence of an existing BDRSuiteIntegrationService on the target machine, which might have been installed by another BDRSuite Backup Server or BDRSuite Client.

Cause 1: Problem accessing the Remote Registry of the target machine

To resolve this issue, ensure that you have access to the remote registry on your target machine:

1. Verify that the "Remote Registry" service is running on your target machine.

Step 1: Go to Services.msc and check for "Remote Registry."

Step 2: If it's stopped, start the "Remote Registry" service.

2. Confirm that there are no access restrictions on the Remote Registry:

Step 1: Run "gpedit.msc" to open the local group policy editor.

Step 2: Navigate to User Configuration > Administrative Templates > System.

Step 3: Double-click the "Prevent Access To Registry Editing Tools" setting and set it to "Not configured." Click "OK."

3. Check for installation privilege settings:

Step 1: Navigate to Computer Configuration > Administrative Templates > Windows Components > Windows Installer.

Step 2: Scroll down and locate "Turn off Windows Installer." Change the setting to "Not configured" and click "OK." 

Step 3: Check "prevent users from installing software on their systems" and change the setting to "Not configured." Click "OK."

4. Verify the availability of the BDRSuiteIntegrationService agent in the control panel:

1. Run "control panel" from the "Run" command.
2. Check for the presence of the BDRSuiteIntegrationService agent.
   

Cause 2: Inability to install BDRSuiteIntegrationService MSI due to another MSI installation

If another MSI installation is in progress on the target machine, you may need to wait for it to complete before proceeding with the BDRSuiteIntegrationService installation.

Cause 3: Target network disconnection during installation

Ensure that the target network remains stable during the installation process to prevent disconnection-related issues.

Cause 4: Error during BDRSuiteIntegrationService installation with port 42005

If you encounter errors while attempting to install BDRSuiteIntegrationService with port number 42005, you can check the port's status using these steps:

1. Open the "Run" dialog and type "cmd" to open the command prompt.

2. Execute the following command in the command prompt:

   Netstat -ano | find "42005"

3. If the port is in a listening state, the result will show "Listening." If you still want to add the target host, consider changing the port used by the application that utilizes port 42005. Then, try re-adding the target host from the BDRSuite server.