Veeam Agent: Service Status - Veeam.Backup ...
systemcenter.wikiThe service may have failed to start (for example, after a reboot) due to issues with the service account such as password expiry or account locked. The service may have been manually stopped. The service may be in process of upgrade or uninstall. Resolutions. Check the service status. It should be set to Automatic start, and should be running.
Validating Veeam Agent for Microsoft Windows service ...
https://www.veeam.com/kb195928.11.2014 · Solution 1. Reboot your computer and check if the error appears again. 2. If the error persists, go to Control panel > Administrative Tools and run Services. Check if the Veeam Agent for Microsoft Windows* service exists. If it does not, try to re-install the application and check again. If it exists, set it to Automatic start.