Veeam back up task failed with error "NFC storage connection is unavailable".

Products

• VMware vCenter Server

Issue/Introduction

When backing up VMs with Veeam by creating and deleting snapshot, it may report "NFC storage connection is unavailable" at Veeam.

/var/log/vmware/vpxd/vpxd.log

YYYY-MM-DDTHH:MM:SS.MMMZ warning vpxd[#####] [Originator@#### sub=CryptoManager opID=########] The session ########-####-####-####-############ of user DOMAIN\USER does not have privilege Cryptographer.Access on entity [vim.Datastore:datastore-##, <Datastore-Name>].

Resolution

Assign the "Direct Access" privilege to the role of this user.

Please follow these steps in the vSphere Client:

1. Log in as an Administrator.
2. Navigate to Administration > Access Control > Roles.
3. Select the role assigned to the backup user.
4. Click Edit.
5. Locate the Cryptographic operations category.
6. Select and enable Direct Access.
7. Click Save.

For details about "Direct Access" privilege, please find Cryptographic Operations Privileges.