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When attempting to add a Hyper-V host to Veeam Backup & Replication using a local (non-domain) user account, the following error occurs:
When using a local account other than the built-in Administrator account, remote access is blocked by UAC remote restrictions.
When adding a Hyper-V server to Veeam Backup & Replication, the account assigned must comply with UAC remote restrictions. Specifically, the account must be either of the following: A domain account that is a member of the Local Administrators group. The built-in account named Administrator.Note: The built-in Administrator account may fail if the "User Account Control: Admin Approval Mode for the Built-in Administrator account" policy is enabled on the Hyper-V host. Please ensure that the username is formatted using HOSTNAME\USER for local accounts or DOMAIN\USER for domain accounts. Alternate Option As an alternative to adding a Hyper-V server to Veeam Backup & Replication using credentials-based authentication, the new Veeam Deployment Kit can be installed on the Hyper-V host(s) before adding it to Veeam Backup & Replication. This will allow you to select the "Connect using certificate-based authentication" option, eliminating the need to provide credentials to Veeam Backup & Replication to establish a connection to the remote machine.
If none of the provided account options are viable, it is possible to disable UAC remote restrictions. This will allow local accounts other than the Administrator to be used for remote access. This option should be considered a last resort as it involves disabling a major Microsoft Windows OS security feature that may leave the Hyper-V server vulnerable. We highly recommend simply using the Veeam Deployment Kit instead of disabling UAC remote restrictions.
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