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...

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...

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...

Failed to upgrade host components. Error 1920.Service Veeam WAN Accelerator Service failed to start.

Challenge The Veeam WAN Accelerator component upgrade fails with the following error: Failed to upgrade host components. Error: ''Error 1920.Service Veeam WAN Accelerator Service VeeamWANSvc failed to start. Verify that you have sufficient privileges to start system services.' The Components Upda...

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...

Vulnerabilities Resolved in Veeam Service Provider Console 9.3

All vulnerabilities documented in this article were resolved in Veeam Service Provider Console 9.3.0.35057. 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...

Release Information for Veeam Backup for Microsoft 365 8.5

More Recent Version Available Please find the latest version of Veeam Backup for Microsoft 365 here: Veeam Downloads - Latest Version Build Numbers and Versions of Veeam Backup for Microsoft 365 Requirements This release can be used to: upgrade an existing v8, v8.1, v8.2, v8.3, or v8.4 deployment...

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...

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...

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...

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...

How to Apply Custom Settings in Veeam Backup for Microsoft 365 Using Set-VBOConfigurationParameter

Purpose This article explains how to use the Set-VBOConfigurationParameter cmdlet to apply a custom configuration setting within a Veeam Backup for Microsoft 365 deployment. Solution How the Scripts in This Article Are Used Every script in this article begins with the same three variables, which...

"There is no FIB [summary.xml]" error with Veeam Cloud Connect v12.2

Updated Hotfix Release -- September 30, 2024 On 2024-09-30, a new revision to the hotfix package listed in this article was released. This updated hotfix file coincides with a repackaged release of the Veeam Backup & Replication 12.2 ISO dated 20240926, which integrates the new hotfix package...

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:...

Build Numbers and Versions of Veeam Plug-In for Scale Computing HyperCore

This KB article lists all versions of the Veeam Plug-In for Scale Computing HyperCore and their respective worker build numbers. Version | Plug-In / Worker Build | Release Date ---|---|--- Veeam Plug-In for Scale Computing HyperCore 4 Releases Veeam Plug-In for Scale Computing HyperCore 4.1...

Failed dependencies: libmsi1 is needed by veeam-guest-interaction-proxy

Challenge Attempting to add a Linux server as a managed server fails with the following error: Failed dependencies: libmsi1 is needed by veeam-guest-interaction-proxy Rocky Linux may also display the following error if the libmsi1 package is already installed: Failed dependencies: ntfs-3g is need...

"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...

Veeam Agent backup job finished with "Collecting recovery media files Details: The system cannot find the file specified" warning

Challenge A Veeam Agent for Microsoft Windows backup job in Managed by backup server mode finishes with a warning: Collecting recovery media files Details: The system cannot find the file specified Cause Veeam Agent for Microsoft Windows runs the Recovery Media collection process at the end of th...

How to Collect Guest Processing Log Files

Purpose This article documents how to locate and gather guest-level log files associated with Application-Aware Processing or VM Guest OS File Indexing that occurs with Veeam Backup & Replication VM backup jobs. While investigating issues related to Guest Processing, additional logs must be...

Upgrading the PostgreSQL Database Engine Software Used by Veeam Backup for Microsoft 365

Support Scope This article is provided as a courtesy to give customers a high-level explanation of how to upgrade the underlying PostgreSQL database engine used to host the Veeam Backup for Microsoft 365 configuration database. Per the Veeam Customer Support Policy, section 10: Support for Veeam...

Granular sudo Permissions for Management of Hardened Repository

Purpose This article documents the granular sudo permissions required to allow Veeam Backup & Replication to deploy and manage a Hardened Repository. Solution Account Requirements The Linux user account used by Veeam Backup & Replication to deploy and manage the Hardened Repository must use the...

How to Remove Servers From Veeam Backup & Replication Console Launcher

Purpose This article documents the procedure for removing previously used backup server entries from the Veeam Backup & Replication Console Launcher. Solution Veeam Backup & Replication Console settings are stored per user in the file:...

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...

How to Exclude Microsoft SQL Databases from Application-Aware Processing

Purpose This article documents how to exclude a Microsoft SQL Database from being processed by Application-Aware Processing. Limitations and Considerations Excluding a database from Application-Aware Processing only means it will not be processed as part of the VSS snapshot operation, and the...

Optimizing and Maintaining SQL Server Instance Hosting Veeam Service Provider Console Configuration Database

Purpose This article was produced in coordination with the Veeam R&D team to provide Service Providers with a comprehensive list of the most common performance improvements and maintenance actions relating to the underlying Microsoft SQL Server instance that hosts the Veeam Service Provider Conso...

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...

Vulnerability Resolved in Veeam ONE 13.1 Patch 0

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...

How to Manually Change the VSA Host Management Certificate

Purpose This article documents the procedure for updating the Host Management Certificate used by the VSA Veeam Software Appliance. Note: The ability to update the certificate via the VSA Host Management Console may be added in a future version; however, as of version 13.0, it must be completed b...

OneDrive / SharePoint Backup Fails with "Error: Invalid MIME content-length header encountered on read."

Challenge A backup job for OneDrive or SharePoint items processed by Veeam Backup for Microsoft 365 fails when attempting to download certain item versions, displaying the following error: Invalid MIME content-length header encountered on read Cause The issue is related to the download process us...

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...

Veeam ONE Web Client Page Fails to Load After Updating .NET Runtime Components

Veeam ONE 12.2 and 12.3 .NET Version Requirements Veeam ONE build 12.2 build 12.2.0.4093 and 12.3 build 12.3.0.4670 require and support only .NET 8.0. Note: All three component versions must match. ASP.NET Core Runtime 8.0.x Microsoft ASP.NET Core 8.0.x - Shared Framework x64 .NET Desktop Runtime...

Veeam PowerShell Command Fails With: "Unable to connect to the server with MFA-enabled user account."

Challenge When attempting to execute Veeam PowerShell commands, the following error occurs: Unable to connect to the server with MFA-enabled user account. Cause This error occurs when MFA Multi-Factor Authentication is enabled within Veeam Backup & Replication and the account you are logged in as...

Build Numbers and Versions of Veeam Service Provider Console

This KB article lists all versions of Veeam Service Provider Console and their respective build numbers. For more information on downloading the latest version of Veeam Service Provider Console, visit: Veeam Service Provider Console -- Current Version Download Page Veeam Service Provider Console ...

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...

"Access is Denied." When Using a Local Account to Add a Windows Machine to Veeam Backup & Replication

Article Applicability This article relates to an error that only occurs when Veeam Backup & Replication is deployed on a Windows machine. With the Veeam Software Appliance, to add a Windows machine using credentials, it requires that both the appliance and the Windows machine are added to the sam...

Removing a License from Veeam Backup and Replication or Enterprise Manager

Purpose This article provides information regarding removing licenses from Veeam Backup & Replication and Enterprise Manager. Solution Removing License From Veeam Backup & Replication Limitations If the Veeam Backup & Replication deployment is managed by Veeam Backup Enterprise Manager , the...

Unable to Mount VPower NFS Specified Key Name or Identifier Already Exists

Challenge During a Veeam vPower NFS-based operation SureBackup, Instant Recovery, Instant Disk Recovery, or Other-OS FLR, the following errors may occur: Unable to mount vPower NFS volume :/VeeamBackup. Fault "AlreadyExistsFault", Error The specified key, name, or identifier already exists. Unabl...

Veeam Security Bulletin (September 2024)

All vulnerabilities documented in this article are resolved in the latest version of each product. 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...

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...

Release Information for Veeam ONE 13.0.1 RTM Patch 0

Update Applicability This "Patch 0" update for Veeam ONE 13.0.1 is strictly intended for deployments using the RTM release build 13.0.1.5860. If Veeam ONE 13.0.1 GA build 13.0.1.5924 is installed, this update can be ignored as it is not needed. All resolved issues listed in this article were foun...

Troubleshooting Guest Processing Issues | "Test Now" or "Verify network connectivity and credentials"

Article Applicability This article's primary focus is on traditional credentials-based authentication. For environments using a Group Managed Service Account gMSA, please review the User Guide first to ensure you are familiar with all the Requirements and Limitations of gMSA usage. Challenge Skip...

CVE-2022-26500 | CVE-2022-26501

Challenge Multiple vulnerabilities CVE-2022-26500, CVE-2022-26501 in Veeam Backup & Replication allow executing malicious code remotely without authentication. This may lead to gaining control over the target system. Severity : Critical CVSS v3 score : 9.8 Cause The Veeam Distribution Service TCP...

Vulnerabilities Resolved in Veeam Backup & Replication 13.0.1.2067

All vulnerabilities documented in this article were resolved in Veeam Backup & Replication 13.0.1.2067. 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...

Vulnerability Resolved in Veeam Service Provider Console 9.2.1

All vulnerabilities documented in this article were resolved in Veeam Service Provider Console 9.2.1.33875. 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...

Release Information for Veeam Backup for Microsoft 365 8.4

More Recent Version Available Please find the latest version of Veeam Backup for Microsoft 365 here: Veeam Downloads - Latest Version Build Numbers and Versions of Veeam Backup for Microsoft 365 Requirements This release can be used to: upgrade an existing v7, v8, v8.1, v8.2, or v8.3 deployment o...

‘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...

Windows 11 24H2/25H2 | Server 2025 - Recovery Media Restore Fails with: The Local Security Authority cannot be contacted

Issue Resolved in September 8 2026 Windows Updates The underlying issue documented in this article was resolved by Microsoft in the September 8 2026 security updates for Windows 11 KB5124008 and Windows Server 2025 KB5122871. After applying the update, the Veeam Recovery Media must be recreated...

Veeam ONE Report Error "Invalid query string"

Note to Veeam Backup for Microsoft 365 Customers If you were directed here by the output of the Test-VBORepository cmdlet, please visit https://www.veeam.com/kb4704. The typo in the cmdlet output will be corrected in a future release. Challenge When previewing a report in Veeam ONE Web Client, th...

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...

How to log in to the Linux Helper Appliance

Purpose This article documents how to login to the Linux appliance used by Veeam Backup & Replication. This is not a common need, but may be neccesary for troubleshooting or advanced configuration. Linux appliances are used by Veeam Backup & Replication for several purposes: In Surebackup, the...