Error downloading plug-in. Make sure that the URL is reachable and the registered thumbprint is correct. Certificate doesn't support 'digitalSignature' KeyUsage

Challenge Attempting to deploy the Veeam Plug-in for VMware vSphere Client through Veeam Backup Enterprise Manager fails with the error: Error downloading plug-in. Make sure that the URL is reachable and the registered thumbprint is correct. Certificate doesn't support 'digitalSignature' KeyUsage...