How to Reset Account Lockout for 'Managed Hardened Repository ISO by Veeam'

Purpose This article documents how to unlock the accounts used with the Managed Hardened Repository ISO by Veeam, veeamsvc or vhradmin, when they become locked out. The Managed Hardened Repository ISO by Veeam deploys Rocky Linux with the DISA STIG security profile, which utilizes faillock to loc...

How to Adjust the Veeam Service Provider Console Web UI Session Timeout

Purpose This article documents how to modify the Veeam Service Provider Console configuration to adjust the Web UI timeout. The default Web UI timeout is 1 hour, and tokens are good for up to 48 hours. Solution Tip: Use the copy button in the text blocks below to simplify specifying which file to...

Cannot Register Management Service. The Specified Service Has Been Marked for Deletion.

Challenge A Backup or Replication job using Application-Aware Processing fails with an error similar to: Failed to prepare VM for processing: Unable to perform installation Unable to register and start service. Attempt 10 of 10 Cannot register management service. Service name: VeeamVssSupport...

Backup Job fails with "This functionality requires using paid Veeam Agent edition" error or Agents discovery session fails with "Remote deployment and management is available for licensed agents only" Error.

Challenge The following error appears during the backup job session, then the backup job fails: This functionality requires using paid Veeam Agent edition. The following error appears during the Agents Discovery session, then the task fails: Remote deployment and management is available for...

Veeam Service Provider Console fails to connect to restored VSPC database due to collation conflict

Challenge When attempting to connect Veeam Service Provider Console to an existing VSPC database the following error occurs: Implicit conversion of varchar value to varchar cannot be performed because the collation of the value is unresolved due to a collation conflict between "" and "" in add...

How to Reset Worker Root Password

Purpose This article documents how to set or reset the password for the root account on a Veeam Worker appliance. The Worker is a Rocky Linux-based virtual machine deployed as a backup infrastructure component by the following Veeam Plug-ins: Veeam Plug-in for Nutanix AHV Veeam Plug-in for Proxmo...

Archiving Job Fails With: "Failed to provision a proxy appliance : Unable to connect by SSH to Appliance."

Challenge An Archiving Job for a Scale-Out Backup Repository fails with the error: Failed to provision a proxy appliance: Unable to connect by SSH to Appliance. Copy Log Example dd.mm.yyyy hh:mm:ss Warning Failed to provision a proxy appliance: Unable to connect by SSH to appliance. dd.mm.yyyy...

Tape job does not copy source backup files and finishes with "No backup files found"/"No new files found" message

Challenge A tape job finishes with the Success status, but the backup files of a source jobs are not copied. In the tape job statistics, you can find the "No backup files found"/"No new files found" message. Cause Case 1: • The source job is a backup copy job. • At the Choose Media Pool for Full...

The HTTP request was forbidden with client authentication scheme

July 2, 2026 -- Issue Recurrence Resolved July 2, 2026 | Veeam Customer Technical Support began observing an increase in cases reporting that jobs were failing with the same error documented in this article. July 3, 2026 | Microsoft engineering has implemented backend changes as part of the ongoi...

How to Move the VBRCatalog Folder

Purpose This article documents the procedure for moving the VBRCatalog folder. Solution VBRCatalog Location Requirements The VBRCatalog folder must be on the root of a given drive letter. Example: C:\VBRCatalog\ or D:\VBRCatalog\ The VBRCatalog cannot be redirected to a CIFS share or mapped netwo...

Veeam Backup & Replication 11a P20220302/P20230227 Compatibility With vSphere 8.0

Full support for vSphere 8.0 is available starting with Veeam Backup & Replication 12. See KB2443: Veeam Backup & Replication support for VMware vSphere Support Statement Veeam's RnD team has performed extensive testing with Veeam Backup & Replication 11a P20220302/P20230227 and has determined th...

Restore or Failback to Server 2022 Hyper-V host fails with "Unable to update VM security descriptor Error"

Article Applicability This article is specific to an error that occurs when attempting to restore or failback to a Hyper-V host running Windows Server 2022 or versions 2004 and 20H2 of the Semi-Annual Channel versions of Windows Server. This article addresses an issue that is mentioned in the Vee...

Upgrading the SQL Database Engine Software (Microsoft SQL Server or PostgreSQL) Used by Veeam Backup & Replication

Support Scope This article is provided as a courtesy to give customers a high-level explanation of how to upgrade the underlying SQL database engine used to host the Veeam Backup & Replication configuration database. Per the Veeam Customer Support Policy, section 10: Support for Veeam Configurati...

Processing configuration Error: The operation is not allowed in the current state. (The VM is in invalid state.)

Article Applicability This article's core error message, "The operation is not allowed in the current state. " may occur during other stages of a replication job or for different job types. This article, KB3000, is specific to when the error occurs during the Processing configuration stage of a...

How to Add Exclusions to Veeam Threat Hunter Scan

Purpose This article documents how to exclude files from the Veeam Threat Hunter scan. Solution To exclude specific files or folders from Veeam Threat Hunter scans, add a registry entry on your Veeam Backup Server: Registry Path: HKLM\SOFTWARE\Veeam\Veeam Threat Hunter\ Value Name:...

How to Configure Advanced Syslog Integration Options

Purpose This article documents advanced configuration options for syslog integration with Veeam Backup & Replication, a new feature starting in version 12.1. Solution The following advanced configuration options are available: Add BOM Before MSG Field Add the Unicode byte order mask BOM before th...

Veeam Backup Enterprise Manager Vulnerabilities (CVE-2024-29849, CVE-2024-29850, CVE-2024-29851, CVE-2024-29852)

Veeam Software Security Commitment Veeam® is committed to ensuring its products protect customers from potential risks. As part of that commitment, we operate a Vulnerability Disclosure Program VDP for all Veeam products and perform extensive internal code audits. When a vulnerability is...

Access to Hyper-V or Veeam B&R Components Fails After DCOM Hardening is Enabled

Article Applicability The issue discussed in this article is not identified solely based on the Veeam errors but rather by their correlation with Windows Event ID 10036, which states: The server-side authentication level policy does not allow the user from address to activate DCOM server. Please...

How to Change Initial Management Port for Veeam Plug-ins for Enterprise Applications

Purpose This article documents how to change the default port used by the Plugin Manager 6791 for Veeam Plug-ins for Enterprise Applications: Veeam Plug-in for SAP HANA Veeam Plug-in for Oracle RMAN Veeam Plug-in for SAP on Oracle Veeam Plug-in for Microsoft SQL Server Veeam Plug-in for IBM Db2...

Veeam Best Practices regarding CVE-2021-36934

Challenge This article documents Veeam's position on Windows Elevation of Privilege Vulnerability CVE-2021-36934. Specifically regarding the listed mitigation steps involving removal of all shadow copies, and the "Impact of workaround" mentioned in the Workarounds section of CVE-2021-36934...

Replication Error: The name '{vmname}' already exists.

Challenge Veeam Backup & Replication replication job fails with the following error message: Processing Error: The name 'replica' already exists. When the error above occurs within Veeam Backup & Replication the following correlating event can be found within the vSphere Events. Cause This error...

How to Change the Settings Related to Veeam Backup & Replication Log Files

Purpose This article documents how to change settings regarding where log files are stored, how large an individual log file may become, and how many generations of log files are retained. Solution Log Files Stored on the Veeam Backup Server The following registry values must be created on the...

Granular sudo Permissions for Veeam Plug-in for Proxmox VE

Purpose This article provides an example granular 'sudoers' configuration for the Linux account that will be used by Veeam Backup & Replication when managing a Proxmox VE host. Solution Critical Details Before You Begin Review all Considerations and Limitations in the user guide! Most noteworthy:...

Veeam Backup & Replication 13: Changes to Supported Linux Platforms

Article Applicability This article lists the specific Linux distributions and versions that will no longer be supported starting with Veeam Backup & Replication and Veeam Agent for Linux version 13. These lists are intended for customers currently running Veeam Backup & Replication 12.3 and Veeam...

How to Review Password Requirements of Veeam Software Appliance

Purpose This article documents how to review the specific password requirements for a Veeam Software Appliance. Solution The Veeam Software Appliance adopts the DISA STIG password requirement standard. These password requirements may change between releases and as part of OS updates. View Current...

"Windows Script Host must be enabled for the duration of setup process"

Challenge While attempting to Install or Upgrade Veeam Backup & Replication, the installer displays the message: Windows Script Host must be enabled for the duration of setup process, Refer to KB4699 for more information https:// www.veeam.com/kb4699. Cause This message is displayed when the...

OAuth interaction_required Error in Veeam Backup & Replication Console After Veeam Software Appliance Update

Challenge The Veeam Backup & Replication Console displays the following error when attempting to connect to a Veeam Software Appliance that was recently updated: Unable to perform OAuth authorization: interactionrequired. The Veeam Backup & Replication Console will report that it successfully...

Troubleshooting vPower NFS Datastore Mounting Issues

Challenge During SureBackup, Instant Recovery, Instant Disk Recovery, or Other-OS FLR operation, the following error is seen in the VMware environment: Error during the configuration of the host: NFS Error: Unable to Mount filesystem: Unable to connect to NFS server. or An error occurred during...

REST API Error: S3 Error: The difference between the request time and the current time is too large / Invalid Credentials for Amazon S3

Challenge This article covers two different errors that occur when performing different tasks, but have the same root cause: When adding S3 Object Storage to Veeam Console, Veeam displays the follow error: Failed to list S3 buckets: check if the specified account has required permissions REST API...

How to Use VSSTrace to Collect VSS Diagnostic Logging

Challenge This article explains how to collect additional VSS diagnostic data with the VSSTrace tool, a Microsoft Windows Software Development Kit SDK component. Cause Veeam products use Microsoft Volume Shadow Copy Service VSS for various tasks. Sometimes it is necessary to go through the...

Bad Hyper-V Username Logon Attempt

Challenge Veeam ONE raises the following event-based alarm:Bad Hyper-V username logon attempt. Cause The Bad Host Username Logon alert suggests that someone is attempting to access the host with an invalid username or password. Solution Veeam ONE raises the Bad Hyper-V username logon attempt alar...

Veeam Agent for Microsoft Windows 13.0.1.120 to 13.0.1.1009 Upgrade Notes

Article Applicability This article documents notable deviations from the standard Veeam Agent for Microsoft Windows upgrade procedure that occur only when upgrading from Veeam Backup & Replication VBR 13.0.1 build 13.0.1.180 to 13.0.1 Patch 1 build 13.0.1.1071. This patch to VBR includes a new...

Failed to install Veeam Analytics Service. Failed to establish connection between the Veeam ONE server and Veeam Analytics service. Operation timed out: 10

Challenge After upgrading Veeam ONE to version 13.0.x, the Veeam Analytics Service installation fails with the following error: Failed to install Veeam Analytics Service. Failed to establish connection between the Veeam ONE server and Veeam Analytics service. Operation timed out: 10. The failure...

"Failed to convert [Not Settable] to UUID."

Challenge Veeam Backup & Replication task interacting with Proxmox VE host fails with: Failed to convert Not Settable to UUID Cause This occurs when the Proxmox VE host has an empty bios UUID, or the reported bios UUID value is unparsable. Solution 1. Remove workers if any from the Veeam Backup &...

Insufficient Storage for VSS Error "0x8004231F or Error: VSSControl: -2147467259"

Challenge The following error occurs during a task that utilizes the Microsoft VSS subsystem: VSSControl: -2147467259 Backup job failed. Cannot create a shadow copy of the volumes containing writer's data. VSS asynchronous operation is not completed. Operation: Shadow copies commit. Code:...

Veeam Agent Standalone Backup Fails with "Version string portion was too short or too long"

Challenge After upgrading Veeam Backup & Replication to version 12, the following tasks for Standalone Veeam Agent i.e., Veeam Agent for Microsoft Windows, Veeam Agent for Linux, Veeam Agent for IBM AIX, and Veeam Agent for Oracle Solaris deployments that existed before the upgrade may fail...

Release Information for Huawei Plug-In for Veeam Backup & Replication

Huawei Plug-In - End of Life The Huawei Plug-In for Veeam Backup & Replication reached End-of-Life on 2022-04-22 and is no longer available. Requirements Before installing Huawei Plug-In v1.0.23, ensure that you are running Veeam Backup & Replication 10.0.0.4461 or later. To check the version, op...

Vulnerabilities Resolved in Veeam Backup & Replication 12.3

All vulnerabilities documented in this article were resolved in Veeam Backup & Replication 12.3. Veeam Product Latest Version Download Page Veeam Software Security Commitment Veeam® is committed to ensuring its products protect customers from potential risks. As part of that commitment, we operat...

‘The revision level is unknown’ upon Guest OS File restore

Challenge When attempting to restore files from a backup of a server that was running Windows 2016 or 2019 and had Deduplication enabled for some or all of the drives, the restore fails with the following error: Failed to restore "" Error: Failed to read xx bytes from the file...

Veeam Backup for Microsoft 365 server license type is not compatible with Veeam ONE license type.

Challenge When attempting to add Veeam Backup for Microsoft 365 to Veeam ONE, the connection fails with: Failed to connect to "". Veeam Backup for Microsoft 365 server license type is not compatible with Veeam One license type. Cause As documented in the Veeam Backup for Microsoft 365 7 Release...

Release Information for Dell PowerStore Plug-In for Veeam Backup & Replication

This plug-in leverages the Veeam Universal Storage API, which enables storage OEMs to allow Veeam Backup & Replication integration to the arrays for backup and replication jobs. Requirements Before installing Dell PowerStore Plug-In v2.1.9, ensure that you are running Veeam Backup & Replication...

Veeam Management Pack v6 Required Ports and Permissions

Solution Required Permissions Connection to Virtual Servers VI Object | Required Permissions ---|--- vCenter, ESXi Host | Read-Only1 Host.CIM.CIM Interaction2 Datastore.Browse Datastore3 Datastore.Configure Datastore3 Datastore Cluster.Browse Datastore Cluster3 1 Minimum required permission over...

Veeam Backup & Replication Platform Migration Guide (Windows to Linux)

Article Applicability This article is related to a new capability to migrate the configuration of a Windows-based Veeam Backup & Replication deployment to a Veeam Software Appliance. Due to the variability in how Veeam Backup & Replication can be used, configured, and deployed, and the complexity...

How to Merge Veeam Data Platform Licenses

Purpose This article documents the process for merging and unmerging licenses for Veeam Data Platform. Notes: Veeam Backup & Replication - Merging licenses for Veeam Backup & Replication can either be done in the application by combining a socket and an instance license or through the Veeam My...

Veeam Service Fails to Start with Error 1920

Challenge A service relating to Veeam Backup & Replication fails to start and displays the message: Error 1920. Service failed to start. Verify that you have sufficient privileges to start system services. Copy Solution Common Causes The service is set to run as an account other than Local System...

Vulnerabilities Resolved in Veeam Backup & Replication 13.0.2

All vulnerabilities documented in this article were resolved in Veeam Backup & Replication 13.0.2.29. Veeam Software Security Commitment Veeam® is committed to ensuring its products protect customers from potential risks. As part of that commitment, we operate a Vulnerability Disclosure Program V...

How to Update NATS and PostgreSQL Passwords Used by Veeam Backup for Microsoft 365

Purpose This article documents the procedures for updating the password Veeam Backup for Microsoft 365 uses to connect to the NATS server and the configuration database. Solution Expand the section below relevant to the password that has been changed: How to Update NATS Server Password Default...

Release Information for Veeam Backup & Replication 12.1 and Updates

This update was superseded by Veeam Backup & Replication 12.3. Release Information 12.1.2.172 2024-05-21 Security Vulnerabilities Indicated severity values are CVSS 3.1 scores. Veeam Backup Enterprise Manager VBEM CVE-2024-29849 | Severity: Critical 9.8 This vulnerability in VBEM allows an...

Restored Linux Machine Fails to Boot

Challenge An issue with initiramfs may cause the restored Linux machine to fail to boot with the following symptoms: ForRHEL/CentOS/SUSE systems, during the boot process, they will drop into the dracut emergency shell and display errors similar to: dracut-initqueue timeout - starting timeout...

How to Perform a Manual Failback (Reverse Replication)

Article Applicability This article is relevant only to non-CDP snapshot-based replicas. Reverse replication cannot be used to fail back a CDP replica. To fail back a CDP replica, use the built-in failback workflow described in Failover and Failback for CDP. Purpose This article describes how to...