Ensure the Syncrify server can communicate with the client machine. This is done by logging in the web interface as admin, clicking Remote Clients under Quick Links and ensuring you see the client among the list.

Check the following if the client is not visible in this list:

• Backup monitoring service is running on the client machine
• There is network connectivity between the client and server machine
• There must at least be one profile on the client referring to your server

If you are using a branded version of the Syncrify client, you must rebrand it after upgrading the server. If you have configured branding to occur automatically, the Syncrify server will attempt to brand the client after an upgrade. To ensure branding is done successfully, look for SyncrifyClient.jar in $INSTALL_DIR\customClient folder. Files are downloaded in this folder during the branding process and are sent to the client upon request.

When branding is not used, a generic version of SyncrifyClient.jar will exist in $INSTALL_DIR\customClient folder. Clients won't be able to upgrade themselves if you don't see SyncrifyClient.jar in this folder.

The Syncrify client won't be able to upgrade itself if an instance is running on the machine. If you are certain a copy of Syncrify client is not running, try restarting the client machine to see if that fixes the problem.