U-AIR issue: Virtual Lab Manager is disconnected

Challenge The following error message occurs when running the U-AIR wizard: Virtual Lab Manager is disconnected The following error messages can be found in the Veeam.AIR. log file: timestamp Error Virtual Lab Manager is disconnected. Veeam.Backup.Common.CommonException timestamp Error Server sta...

Transaction was deadlocked

When trying to delete backups in Veeam console, occur error "Transaction Process ID xx was deadlocked on lock."...

Internet Access From Virtual Lab

Purpose This article documents how to enable machines operating within the Virtual Lab isolated network to access the internet. Solution The function documented in this KB enables the virtual lab proxy appliance to act as an internet proxy. This proxy function only passes web browser traffic. Thi...

Exchange Backup Jobs Run Longer Than Expected or Fail with: Contract schema check for the Exchange Online REST API failed

Challenge Exchange backup jobs in Veeam Backup for Microsoft 365 or Veeam Data Cloud for Microsoft 365 run far longer than expected or fail to complete. The job log contains the following warnings and errors: Warning: Failed to retrieve Exchange Online REST API cmdlet information Warning: HTTP...

Unstructured Data Backup from Google Cloud Storage fails with a Bad Request error

Challenge An Unstructured Data Backup of data from Google Cloud Storage added to Veeam Backup & Replication as an S3-Compatible Object Storage data source fails with the following error: Failed to perform object backup Error: Agent: Failed to process method NasMaster.ExecuteBackupProcessor: Faile...

How to create an External Client App to Connect Veeam Backup for Salesforce

Purpose This article documents how to create an External Client App ECA in Salesforce to integrate with Veeam Backup for Salesforce via Salesforce API. An ECA with proper permissions is required for Veeam Backup for Salesforce to integrate with Salesforce API using the OAuth 2.0 protocol. Solutio...

How to Configure krb5.conf for Cross-Domain Hyper-V Cluster Management

Purpose This article documents how to configure the /etc/krb5.conf file on the Veeam Software Appliance VSA to enable Kerberos authentication when managing a Microsoft Hyper-V cluster whose nodes belong to a different Active Directory domain than the backup server. As noted in the VBR 13 User Gui...

Malware and Ransomware Detection in M365

Availability Requirement Threat Detection is available to Veeam Data Cloud for Microsoft 365 customers with Premium or Advanced plans. Customers must opt in to AI settings to enable this feature. Contact your Veeam account team or see your plan details to confirm availability. Supported Workloads...

Release Information for Dell SC Series 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 SC Series Plug-In v1.0.211, ensure that you are running Veeam Backup & Replication...

Files with Microsoft Purview Sensitivity Labels Are Not Accessible After Being Restored

Challenge After restoring a file that was encrypted with a Microsoft Purview Sensitivity Label, attempting to open it results in an error similar to: Word was unable to read this document. It may be corrupt. Try one or more of the following: Open and Repair the file. Open the file with the Text...

Error: "Cannot find the object on the mount host."

Challenge When attempting to perform a Guest Files restore from Veeam Backup Enterprise Manager, the restore fails with the error: Cannot find the object on the mount host. Read KB4722 for more details. Cause This error occurs when the Guest OS partition that is being mounted is formatted with a...

How to Back Up ARM Role Assignments with Veeam Backup for Entra ID

Challenge This article documents the additional configuration necessary to enable Veeam Backup for Microsoft Entra ID to back up relationships between protected resources and management groups as part of the backup scope. By default, Veeam Backup for Microsoft Entra ID does not back up...

How to Disable Boot Prompt in Veeam Agent for Windows Recovery Media

Version Requirement Requires Veeam Agent for Microsoft Windows version 6.3, which is included with Veeam Backup & Replication 12.3. Purpose This article documents how to disable the 'Press any key to boot from CD or DVD... " prompt that appears when booting from the Veeam Agent for Microsoft...

Granular sudo Permissions for Management of Veeam Agent for Oracle Solaris

Purpose This article provides examples of granular 'sudo' configuration for the Linux account that will be used by Veeam Backup & Replication when managing Veeam Agent for Oracle Solaris deployments with a Protection Group. Solution The following granular sudo permissions were tested with Veeam...

Alternative Method for Migrating Backups to Hardened Linux Repository

Please review the information in this article closely before performing any actions documented herein. This article documents a series of steps that if not performed precisely as documented, could result in data loss. Purpose This article documents an alternative method for migrating backups from...

How to Exclude Applications from Dashboard & Compliance Reporting

Purpose This article provides steps to exclude system namespaces from the Veeam Kasten for Kubernetes dashboard and compliance reporting. Solution Explanation Veeam Kasten for Kubernetes automatically discovers all application namespaces of the cluster on which it is deployed. Each of these...

How to Add a Blueprint Target Using Execution Hooks From the Policy API

Purpose This article explains how to set resources other than namespaces as the hooks for blueprint subjects. By default, hooks sets the namespace as the target for the blueprint unless specified otherwise. Solution Veeam Kasten for Kubernetes supports kanister execution hooks through Policy API...

How to ‘Transform’ Multiple Resources with Regex

Purpose Veeam Kasten makes use of the 'Transforms' feature to migrate applications between different clusters, between different storage backends, and many other use cases. Transforms enable modifications to Kubernetes resources on restore. The ability to move an application across clusters is an...

VSS Snapshot Creation Delay on Server with DFSR Enabled

Article Applicability The issue described in this article affects earlier versions of Veeam Agent for Microsoft Windows VAW, however, the solution provided will only work with VAW 6.1.2 and higher. Challenge When backing up a server with the DFS feature enabled, the VSS snapshot creation step in...

New Readiness Check - Multiple Veeam Backup Servers Are Required by One Recovery Plan

Article Applicability This article documents a new Plan Readiness Check parameter in Veeam Recovery Orchestrator 7.1. Purpose This article documents a new addition to the Plan Readiness Check in Veeam Recovery Orchestrator VRO v7.1. This new check will be part of the Plan Readiness Check for all...

Azure Bill Forecast High After Subscribing to Veeam Data Cloud

Challenge After subscribing to Veeam Data Cloud for Microsoft 365 via Microsoft Marketplace, the Cost Analysis chart within the Microsoft Azure portal displays a forecasted future cost much higher than expected. Cause The forecast chart in the Cost Analysis tile uses a simplified algorithm for...

Release Information for Veeam Backup for Salesforce 2 Cumulative Patches

This update has been superseded by Veeam Backup for Salesforce 3. Requirements Please confirm that you are running Veeam Backup for Salesforce 2.1 build 2.1.0.4675 or earlier before upgrading. You can find the currently installed build number in the Configuration About section. After the upgrade,...

VMXNET3 Drivers Missing From Recovery Media for Server 2022 vSphere VM

Challenge When attempting to perform a Bare Metal Restore on a vSphere VM using Veeam Recovery Media, which was created from a vSphere VM running Server 2022, the network adapter drivers fail to load. This issue persists despite having the 'Include hardware drivers from this computer' option...

Azure Storage Account Key Security Advisory

Purpose This article highlights a flaw in the design of Microsoft Azure roles that could lead to breaches between control and data planes. If a control plane user's account is compromised, it can be used to access and alter files stored in the storage accounts accessible to them. Cause The ListKe...

Release Information for Veeam Backup for Microsoft 365 7 Cumulative Patches

This release has been superseded by Veeam Backup for Microsoft 365 7a. Requirements This Cumulative Patch can be used to: update manually from a previous Veeam Backup for Microsoft 365 7 release to the latest Cumulative Patch. upgrade an existing pre-7 Veeam Backup for Microsoft 365 server to Vee...

How to Recover Account Credentials From the Veeam Backup & Replication Database

Select the tab that matches the deployed version of Veeam Backup & Replication. 1. Backup & Replication 12.1 - 12.3.2 2. Backup & Replication 12 Security Statement It is critical to understand the difference between password validation and providing software with the capability to utilize...

Shared Server Compatibility of Veeam Backup for Microsoft 365 and Veeam Backup & Replication

Purpose It is important to remember that Veeam Backup for Microsoft 365 and Veeam Backup & Replication are separate backup products designed to operate separately from each other. However, both Veeam Backup for Microsoft 365 and Veeam Backup & Replication utilize Veeam Explorers as secondary...

Veeam Backup & Replication Communication With Azure Proxy Fails With "The RPC server is unavailable"

Challenge When attempting to add an Azure Restore Proxy Appliance to Veeam Backup & Replication or performing a Restore to Microsoft Azure using an Azure Restore Proxy Appliance, the following errors may occur: When attempting to add an Azure Restore Proxy Appliance: Failed to save Azure proxy...

Exchange backup fails at "TeamsMessagesData" folder

Challenge Backup of an Exchange mailbox fails with the error: Failed to synchronize item changes in folder: TeamsMessagesData Copy Solution A stop-gap workaround for this error has been included with Veeam Backup for Microsoft 365 5d cumulative patch KB4235. This fix will cause the...

CDP filters installation fails with "Storage providers offline"

Challenge When installing the CDP I/O Filter, the operation fails with "Storage providers are offline." When this occurs you may also notice that within the VMWare GUI the VMWare storage providers show as disconnected. The following is an example of what can be found in the I/O Deployment log:...

Managed Veeam Backup Agents are offline after Veeam Service Provider Console upgrade

Challenge After upgrading Veeam Service Provider Console, all Veeam Management Agents are listed as offline. Cause This may be caused by an incorrect security certificate configuration, which leads to the disconnection of the management agent on the Veeam Cloud Connect server after the upgrade. S...

How to enable Fast Clone functionality with Veeam Availability for Nutanix Mine

End-of-Life Product Nutanix Mine with Veeam reached End-of-Life on 2026-04-30. As of this date, all support services for this product are unavailable. For more information, see the Nutanix EOL Announcement Bulletin - Nutanix Mine, released 2025-04-30. Challenge Fast Clone is the Veeam Backup &...

Data corruption due to unreliable SMB (CIFS) shares

Challenge Storages that use the SMB CIFS protocol without the continuous availability and write-through features can cause data corruption in case of technical outages. This can lead to restore or backup problems. Cause If shares operate without the continuous availability feature in the...

Job fails to create VSS snapshot for SMB share

Challenge A File Backup/file to tape job skips VSS snapshot creation on SMB share and ends with the following message in the log: Failed to create a VSS snapshot, failing over to direct backup from the file share A File Backup job for an SMB3 File Share configured to use Backup from a Microsoft V...

How to Create Custom Backup Policy IAM Role

The Backup Policy IAM role is used to run the following backup operations: Enumerating of the resources.Taking EBS snapshots of selected EC2 instances volumes.Creating volumes from snapshots.Attaching...

VMs stored on vVols may experience a significant stun during the snapshot removal process after the backup session.

Challenge During the snapshot removal operation that occurs at the end of a backup/replication job for a VM stored on a vVol Datastore, the following is observed: The Guest OS of the VM being processed is stunned or frozen. Monitoring software may report that the Guest OS is inaccessible due to a...

Release Notes for Veeam ONE 9.5 Update 4a

Challenge Release Notes for Veeam ONE 9.5 Update 4a. Please confirm that you are running version 9.0 Update 1 build 9.0.0.2088 or later prior to installing this update. You can check this under Help | About in Veeam ONE console. After the successful upgrade, your build number will be 9.5.4.4587...

Hardware encryption doesn't work on tape operations after update to 9.5 Patch 4b

Challenge After you update to patch 4b 9.5.4.2866, you may face the following encryption-related issues during the backup and restore procedures. Restore from tape backups made in the previous product versions with enabled hardware encryption may fail with the following error message: 11.07.2019...

Veeam Backup Enterprise Manager RESTful APIs Upgrade Instructions

Challenge Veeam Backup & Replication 9.5 Update 4 RTM is not compatible with the previous versions of API. Some integration may not work as expected. Cause Update 4 has introduced new Product functionality that requires extended API and incremented the required request version to v14. Solution Th...

Release Notes for Veeam Backup & Replication 9.5 Update 3a

More Recent Version Available Please find the latest version of Veeam Backup & Replication here: Veeam Downloads - Latest Version Challenge Release Notes for Veeam Backup Replication 9.5 Update 3a Cause Please confirm that you are running version 9.5.0.580, 9.5.0.711, 9.5.0.802, 9.5.0.823,...

Quantum storage devices may have a known Linux bug

Challenge To identify if a known linux bug is the cause for errors on a backup repository. Cause You will see a job fail with "unable to mkdir /var/log/sudo-io : File exists", this is caused by a bug in some versions of the sudo application. Solution Some quantum storage device's operating system...

Unable to install VAC management agent on Cloud Connect server after VAC migration

Challenge After migrating your Veeam Availability Console VAC installation to a new server, the following error message pops up when trying to add an existing Veeam Cloud Connect VCC server that was managed by the previous installation: Failed to install management agent on the Cloud Connect serv...

vCenter Server Appliance - Backup/Restore Recommendations

Native File-Based Backup and Restore Recommended vCenter Server Appliance Data Integrity Best Practices recommends using the native file-based backup and restore operations to protect the vCenter Server Appliance. Review: VMware vSphere User Guide: Considerations and Limitations for File-Based...

How to Deploy Veeam Configuration Database in SQL AlwaysOn Availability Group

Multi-subnet SQL AlwaysOn clusters are not supported for hosting the Veeam Backup & Replication or Veeam Backup Enterprise Manager configuration databases. Purpose This article provides information on using a SQL AlwaysOn Availability Group to host the Veeam Backup & Replication and/or Veeam Back...

Scale-Out Backup Repository Free Space Calculation

Challenge Jobs running to a Scale-Out Backup Repository report "No scale-out repository extents have sufficient disk space to store the backup file, " even though some of the extents have adequate free space. Cause At the beginning of a job, if no other jobs are running, Veeam Backup & Replicatio...

Failed logon event generated by Veeam ONE on Windows computers

Challenge Repeated audit events for failed logon with bad username or password occur on Hyper V hosts and in Veeam Backup & Replication environment. The events appear to be initiated by Veeam ONE service account. Cause The behavior is described in this Microsoft KB article. Solution Behavior by...

Release Notes for Veeam Backup & Replication 9.5 Update 1

More Recent Version Available Please find the latest version of Veeam Backup & Replication here: Veeam Downloads - Latest Version Challenge Release Notes for Veeam Backup & Replication 9.5 Update 1 Cause Please note that this is an incremental update of the Veeam Backup & Replication version 9.5...

Release Notes for Veeam Backup & Replication 9.0 Update 2

More Recent Version Available Please find the latest version of Veeam Backup & Replication here: Veeam Downloads - Latest Version Challenge Release Notes for Veeam Backup & Replication 9.0 Update 2 Cause Please confirm you are running version 9.0.0.902 or 9.0.0.1491 prior to installing this updat...

Restoring Domain Controller from an Application-Aware backup

Article Applicability The details discussed in this article are related only to Domain Controllers that are not virtual machines in a Hyper-V environment. In Hyper-V environments, Domain Controller VMs are not modified to change the boot method during restore because the HV Integration Tools noti...

Release Notes for Veeam ONE 9.0 Update 1

Challenge Release Notes for Veeam ONE 9.0 Update 1 Cause Please confirm you are running Veeam ONE 9 prior to installing this update. You can check this under Help | About in Veeam ONE Monitor Client, the build number should be 9.0.0.xxx. After upgrading, your version build will be 9.0.0.2088. Thi...