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 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...

Version string portion was too short or too long

The article describes additional Veeam ONE database configuration required after deploying it manually...

SQL VSS Writer is missing: databases will be backed up in crash-consistent state and transaction log processing will be skipped

Challenge A job displays the warning: SQL VSS Writer is missing: databases will be backed up in crash-consistent state and transaction log processing will be skipped Solution Support Scope Please note that the warning message displayed by Veeam Backup & Replication is a courtesy notification...

VDDK error: 13 - Troubleshooting

Challenge Backup/Replication jobs fail with: VDDK error: 13.You do not have access rights to this file Solution Below is a list of possible solutions to this issue sorted by what transport mode was being used when this error occurred. Note: There are many causes for VDDK 13; this list is not...

Veeam ONE Database Calculator for Veeam Backup for Microsoft 365 Monitoring

New Interactive Calculator An updated interactive calculator is now available to replace the legacy Excel file included with this article. Veeam ONE Calculator Solution Summary This Veeam ONE database sizing calculator will help estimate the database size required to retain historical data when...

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...

How to Find Your Veeam Support ID Number

Challenge When opening a support case, after selecting a Veeam product, the Support ID field will autopopulate if your account has only one Support ID associated with the selected product. If more than one Support ID is associated with the selected product, you will be prompted to either select a...

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:...

Error downloading plug-in. Make sure that the URL is reachable and the registered thumbprint is correct. Certificate doesn't support 'digitalSignature' KeyUsage

Challenge Attempting to deploy the Veeam Plug-in for VMware vSphere Client through Veeam Backup Enterprise Manager fails with the error: Error downloading plug-in. Make sure that the URL is reachable and the registered thumbprint is correct. Certificate doesn't support 'digitalSignature' KeyUsage...

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 Manually Back Up Veeam Configuration Databases

Purpose This article documents methods to back up Microsoft SQL and PostgreSQL databases. This article also documents how to locate the configuration database for Veeam Backup & Replication / Veeam Cloud Connect Enterprise Manager Veeam Service Provider Console. For information about Veeam ONE,...

Failed to call RPC function 'Vss.FinishSnapshot'

Article Applicability The first part of the error document in this article, Failed to call RPC function , is common and occurs anytime an RPC function cannot be invoked. This article is specifically related to an issue where the VSS snapshot closes prematurely because the KeepSnapshot RPC calls...

Protection Domain Has Third-Party Backup Snapshot(s)

Challenge Two different issues are possible: Scenario 1: Cannot Remove Protection Domain When trying to remove a protection domain containing the virtual machines, which are being backed up by Veeam Backup for Nutanix AHV backup appliance, the following error occurs: Specified protection domain h...

Backup job fails with “The request is not supported. Failed to duplicate extent” message.

Challenge A backup job targetted at an ReFS based repository fails with " The request is not supported. Failed to duplicate extent" Examples: Agent: Failed to process method Transform.CompileFIB: The request is not supported. Failed to duplicate extent. Target file: vbk, Source file: vib,...

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...

Release Information for Veeam Backup & Replication 11a Cumulative Patches

More Recent Version Available Please find the latest version of Veeam Backup & Replication here: Veeam Downloads - Latest Version Requirements Before installing this Cumulative Patch using the Patch Installer, please confirm that you are running Veeam Backup & Replication 11a build 11.0.1.1261 wi...

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...

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...

Manually moving backup files between Scale-Out Backup Repository extents

Extent Rebalance is Now Built-In to Veeam Backup & Replication This article was written prior to the release of Veeam Backup & Replication 12. While the procedure may still work in Veeam Backup & Replication 12 and higher, we strongly advise you to instead consider using the built-in rebalancing...

JetError -1404, JET_errIndexNotFound, No such index

Challenge When trying to open a database in VEAD, you receive the following error message: JetError -1404, JETerrIndexNotFound, No such index Solution Log in to the domain controller from which you are trying to restore the database, run cmd as Administrator and run the following: 1. Type regsvr3...

Release History for Veeam Service Provider Console 9

Veeam Service Provider Console 9 Builds 9.2.1.33875 2026-05-27 Resolved Issues Security CVE-2026-32998 | Severity: Critical 9.4 A vulnerability in Veeam Service Provider Console allows for remote code execution. Third-party libraries and packages used in Veeam Service Provider Console and its...

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...

SharePoint backup jobs fail with: The remote server returned an error: (429)

After upgrading to Veeam Backup for Microsoft 365 7, backup jobs may fail with this error due to SharePoint Online throttling policy...

Hyper-V Backup Job fails after 72 hours "Failed to call RPC function 'HvSetVmBackupStatus'"

Challenge A backup of a Hyper-V VM fails after 72 hours with the following error: Failed to call RPC function 'HvSetVmBackupStatus': Snapshot with id 'snapshot-uuid' was not found. In the Task log for the specific VM %programdata%\Veeam\Backup\ \Task...log the following error is found: Error The...

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...

Veeam Agent for Linux: Update Blocked by Repository Signing Key Change

Article Applicability This article is intended for customers managing Veeam Agent for Linux 6.3 deployments. Deployments that have already been updated to Veeam Agent for Linux 13, or are being updated to it, are not affected by the repository GPG key change. Challenge When attempting to update...

Veeam Agent for Microsoft Windows 6.3.2.1302 Private Fix Deployment Information

Article Applicability This article documents the Veeam Agent for Microsoft Windows private fix deployment procedure for customers who have recently installed Veeam Backup & Replication 12.3.2.4165 Patch. That patch to Veeam Backup & Replication includes a private fix for Veeam Agent for Microsoft...

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:...

How to Investigate 'Encrypted Data Event' from Malware Detection

Version Requirement This tool only works for malware inline detection events created by Veeam Backup & Replication 12.1.2 and newer. Previous versions of Veeam Backup & Replication are not supported. Protected Workload Guest OS Requirement This tool only supports investigating Windows-based...

Public Folder Backup Hangs

Challenge An Exchange backup job that contains a public folder mailbox runs in an endless cycle, continuously getting changed items from one of the public folders. In the job logs, you can see multiple entries in the following format: Changed items: 0, deleted items: 0, read state changes: 100...

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...

"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...

How to Modify the Security & Compliance Analyzer's Password Complexity and Length Validation Check

Purpose This article documents how to adjust the Encryption Password Complexity and Length Validation check portion of the Security & Compliance Analyzer. Starting in Veeam Backup & Replication 12.3, encryption passwords will automatically be checked to see if they meet specific length and...

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...

Backup Copy or Replication job using WAN accelerators fails with "Source WAN accelerator error: Failed to decompress LZ4 block"

Challenge A Backup Copy or Replication job that uses WAN accelerator fails with any of the following errors: Error: Source WAN accelerator error: Failed to decompress LZ4 block: Bad crc Error: Source WAN accelerator error: Failed to decompress LZ4 block: Incorrect decompression result or length...

"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 &...

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...

Unexpected Increase in Exchange Incremental Data Processed By Veeam Backup for Microsoft 365

May 2025 Update This article has been updated with new information regarding the February 2025 occurrence and the results of the subsequent investigation. Issue Summary First Occurrence -- August 7 - August 21, 2023 Some customers using Veeam Backup for Microsoft 365 to back up Microsoft 365...

Backup Failure: "There are currently x usable fault domains. The operation requires y more usable fault domains."

Challenge A Veeam Backup & Replication job protecting a VM stored on a vSAN fails with the error: Error: There are currently x usable fault domains. The operation requires y more usable fault domains. Cause This error is relayed from the snapshot operation failure message within the vSphere...

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...

Secure channel communications stop working after disabling TLS 1.0/1.1

After disabling TLS 1.0/1.1, Veeam functionality which utilizes the SCHANNEL security provider, such as license auto-update, license usage reporting and Veeam explorers with remote mounts stop working...

Granular sudo Permissions for Management of Veeam Agent for Linux Deployments

More Secure Alternative Starting in Veeam Backup & Replication v12.1, it is now possible to deploy Veeam Agent for Linux using pre-installed Veeam Deployer Service and add that machine to a Protection Group using certificate-based authentication instead of credentials. Using this method, no...

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 Limit Parallel Disk Processing in Veeam Agent for Microsoft Windows

Purpose This article documents how to disable or limit parallel disk processing in Veeam Agent for Microsoft Windows. Solution The following registry values can used to control parallel disk processing on the machine where Veeam Agent for Microsoft Windows is installed: To disable parallel disk...

How to manually remove restore points from a VMware Replica

Purpose This article documents how to remove restore points from a Veeam Backup & Replication replica in a vSphere environment. The replica must be in a state where: the latest run was successful the job is not currently running failover is not currently active. Solution Remove old restore points...

Failed to perform post-processing for plug-in. Error: The issuer certificate does not have a Basic Constraints extension.

Challenge After upgrading a Windows-based Veeam Backup & Replication deployment to version 13.0.1 or higher, the following error may occur: Failed to perform post-processing for plug-in $pluginName Linux $machine Error: The issuer certificate does not have a Basic Constraints extension. Examples:...

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...

Cannot find EFI boot manager entry for EFI System Partition

Challenge Backup During the backup of some Linux-based machines, the following error occurs: Cannot find EFI boot manager entry for EFI System Partition GUID Restore During a Bare Metal Restore BMR from a restore point created by a backup that displayed that error, the following error will occur:...

Vulnerability Scanner Detection Related to CVE-2023-38545

Veeam Backup & Replication 12.1.2 Release - Article Update With the release of Veeam Backup & Replication 12.1.2, the VDDK libraries, which contained the libcurl library, are no longer included with the Veeam Transport package. After upgrading, the Veeam Transport Package on remote components wil...