Rebooted the domain controller to resolve the out-of-memory error that was causing the health check to fail.
Upon arrival at the location, it was discovered that there was an issue regarding the service provided by AT&T. As a solution, we suggested that a technician from AT&T be sent in to inspect and diagnose the problem. We also offered our services to be present during the technician's visit, should the client require it.
Windows Updates have been completed manually as there was an automation error. We apologize for any inconvenience this may have caused. Our team has resolved the issue and will ensure that it does not occur again in the future.
Upon conducting a search, the email containing an HTML file requiring login credentials was discovered. It is highly recommended that the customer refrain from providing login credentials and instead contact the company directly for further assistance.
After troubleshooting, the client's high-availability system had lost trust with the domain. Once the trust was rebuilt, Veeam was able to resume normal functionality.