This knowledge base article provides manual workaround steps for upgrading Vembu NetworkBackup clients in scenarios where the automatic software upgrade process fails due to issues in retrieving sufficient information from the database about the existing version.

The automatic software upgrade may fail when there is a difficulty in retrieving necessary information from the database regarding the existing version.

To address this issue, follow the steps below on the BDRShield client machine:

1. Stop the BDRShield application by accessing "service.msc."

2. Create backup copies of the conf, Reports, Plugins, plugin-data, and data folders from the existing client installation directory: C:/Program Files/Vembu/VembuNetworkBackup.

3. Rename the "Vembu Networkbackup" folder in the installation location: C:/Program Files/Vembu.

4. Uninstall Vembu NetworkBackup from the control panel.

5. Reinstall Vembu NetworkBackup using version 3.7 build. Ensure to provide the same NetworkBackup ID used before in the installation wizard.

6. During the final step of the installation, uncheck the option "start the service" and click finish.

7. Rename the data, plugins, plugin-data, and Reports folders in the installation location. Copy the previously backed-up folders to the same location: C:/Program Files/Vembu/VembuNetworkBackup.

Next, perform the following steps on the backup server machine:

1. Login to MySQL or PostgreSQL database and execute the following query:

Delete from client_uuid where VembuBDR_id="client_id";

Replace "client_id" with the previously used ID of this client.

2. Once completed, restart the BDRShield application. Login and check whether backup and restore functionalities work correctly.