Recommended hotfixes for Hyper-V servers

Below are the recommended hotfixes and patches for Microsoft Hyper-V Servers...

Error "One or more legacy replicas are detected in configuration remove them manually and try again" during upgrade to v7

Challenge During version 7.x Upgrade from 6.x, you receive the error "One or more legacy replicas are detected in configuration remove them manually and try again". Legacy Replicas are any replica created by Veeam Backup prior to version 6.x. Cause Legacy Created prior to Version 6 of Veeam Backu...

0x80042317 or Error: VSSControl: -2147212521

Challenge A task fails with the following error: Failed to prepare guest for hot backup. Error: VSSControl: -2147212521 Backup job failed. Discovery phase failed. Cannot add volumes to the snapshot set. Cannot add a volume to the snapshot set. Volume name:...

Windows Native File Level Restore Total Amount of Disks Limit

Limitations of quantity of disks for Windows and Multi-OS file level restore...

Excluded VM Disk is Still Snapshotted

Article Applicability This article is Veeam Backup & Replication version agnostic as it relates to the behavior of snapshots and checkpoints within the hypervisor environment. Challenge Disks of a VM being backed up by Veeam Backup & Replication are snapshotted even though they were excluded from...

Patch 3 Release Notes for Veeam Backup & Replication 6.5

More Recent Version Available Please find the latest version of Veeam Backup & Replication here: Veeam Downloads - Latest Version Challenge These are the issues resolved by the Patch 3 for Veeam Backup version 6.5.0.106 / 6.5.0.109 / 6.5.0.128. This patch is cumulative and contains fixes from Pat...

Deduplication Appliance Best Practices

To learn about the Performance Impacts of Deduplicated Storage Systems, visit KB2660. Purpose This article provides links to vendor-provided best practices documents and vendor-specific configuration advice found in the Veeam Backup & Replication User Guide. It also offers general recommendations...

The user has not been granted the requested logon type on this computer

Challenge Although the nWorks service account has local administrator rights and is a member of the nWorks Enterprise Manager Accounts local group, nWorks Collector and Enterprise Manager cannot be installed, because the installer does not accept the specified service account. The following error...

Veeam ONE Monitor performance data collection times out

Challenge You are facing the following configuration issue: Veeam ONE Monitor performance graphs show the No Data Available message. Cause VeeamDCS.log file contains the following errors: ​Collecting thread has failed to initialize The operation has timed out and will be stopped Collecting thread...

How to troubleshoot CIM hardware monitoring

Challenge The CIM API allows Veeam products to receive up-to-date information without requesting hardware refreshes, but this requires a separate connection, and if that connection cannot be made, the hardware data will be collected as it was in earlier versions, and request periodic hardware...

Veeam Management Pack for Microsoft System Center "Failed to Login" or "Cannot Complete Login" troubleshooting

Purpose The following errors occur: Login failed or Cannot complete login You may see the following event in the Veeam Management Pack for Microsoft System Center logs or receive a similar notification: ERROR IMon Quering IP or VC Name failed: Veeam.LicenseServer.LsException: Soap login to 'IP or...

Re-IP fails on Windows 2003/2008 servers.

Article Applicability The issue discussed in this article is strictly related to the use of VMXNET3 network adapters with the following vSphere VM guest operating systems: Windows 7 Windows 7 SP1 Server 2008 R2 Server 2008 R2 SP1 Challenge When you perform failover for a Win2008R2 server with a...

Could not connect to Veeam ONE Monitoring Server specified in Settings > Client Settings.

Challenge After launching the Veeam ONE Client, a pop-up appears with the message: Could not connect to Veeam ONE Monitoring Server specified in Settings Client Settings. Cause This occurs when the Veeam ONE Client cannot connect to the Veeam ONE Monitoring Server specified during the launch of t...

How to Run Scripts With Veeam One Client

Purpose This article provides additional information about running scripts with Veeam ONE Client. Solution Script Configuration Scripts can be configured for the following action types: As an alarm notification action -- select this option if you want to run a custom script when the alarm is...

Direct-SAN Transport mode – Requirements and Troubleshooting

Purpose This article documents how to set up Direct SAN Access for use with Veeam Backup & Replication. The Direct SAN access transport mode is recommended for VMs whose disks are located on shared VMFS SAN LUNs that are connected to ESXi hosts over FC, FCoE, iSCSI, and on shared SAS storage. In...

How to apply a SQL script to Veeam Backup & Replication/Veeam Backup Enterprise Manager Database

Purpose This article documents the procedure for applying a SQL script to a Microsoft SQL Server or PostgreSQL Database. Specifically, this article is targeted at the scenario where a support engineer has provided a .sql script to modify the Veeam Backup & Replication or Veeam Backup Enterprise...

VSS: Guest operation system is not supported.

Challenge The following error occurs: "VSS: Guest operation system is not supported." The log file contains the following messages: timestamp Info Collecting guest metrics. timestamp Info servertype: 0x1007 timestamp Info Target host is a workstation. timestamp Info Guest OS version: 5.2 timestam...

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...

Unable to access the virtual machine configuration: Invalid datastore path

Challenge SureBackup/Instant Recovery session fails with the error: Unable to access the virtual machine configuration: Invalid datastore path Log Files list: Error Failed to register VM name 'XYZaf5107a9120c43e687c33c3d6f4c073c', is template 'False' System.Exception Error Unable to access the...

VSS issue: Retrieving the COM class factory for component with CLSID failed (80070005)

Veeam service account does not have enough privileges to call a COM server application with specified CLSID. As a result, it is not possible to inject the VSS short-life process into the guest OS...

Remote Registry Inaccessible to 2003 Server

Challenge VSS fails with the following error: Starting guest agent Cannot initialize information about the guest's system. Target host: xxx.xx.xxx.x. Cannot collect metrics about the guest's operation system. Cannot open sessions manager's registry key. Win32 error:Access is denied. Cause Typical...

File is larger than the maximum size supported by datastore

Challenge The following error message occurs when attempting to create a VMware snapshot. File is larger than the maximum size supported by datastore The Veeam Backup & Replication job fails with the following error: CreateSnapshot failed, vmRef "vm-xxx", timeout "1800000", snName "VEEAM BACKUP...

Job Fails Due to Quiesced Snapshot Creation Failure

Challenge A Backup or Replication job for a VMware Virtual Machine fails with either of the following errors: Failed to create VM snapshot. Error: CreateSnapshot failed, vmRef "vm-", timeout "1800000", snName "VEEAM BACKUP TEMPORARY SNAPSHOT", snDescription "Please do not delete this snapshot. It...

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...

Appliance Installer Error: "An unknown error has occured"

Challenge When installing a Veeam Infrastructure Appliance on a physical or virtual machine using a bootable USB device created from the JeOS ISO file, the following error occurs: An unknown error has occurred Cause This problem happens during installation, following the disk partitioning step, a...

Migrating Veeam Kasten for Kubernetes to the Red Hat Certified Operators Catalog

Challenge One or more of the following symptoms may be observed in a Red Hat OpenShift environment running Veeam Kasten for Kubernetes : Upgrades are no longer available for the Veeam Kasten operator installed from the Red Hat Operator Marketplace catalog. Veeam Kasten Enterprise - Term or Veeam...

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,...

'Unauthorized to make an AWS request.' When Using AWS Israel Region

Challenge When creating a new AWS S3 Object Storage Repository with the recently launched AWS Israel region il-central-1, configuring a Helper Appliance fails with the error: Unauthorized to make an AWS request. Cause This error occurs because the AWS SDK libraries used by Veeam Backup &...

How to Send a Test Email Notification Using PowerShell

This article documents a method for sending a simple email via PowerShell...

The Console Does Not Appear After Being Launched

Challenge After launching the Veeam Backup & Replication Console, the splash screen appears, and the application is shown in the taskbar, but the Console does not appear, and the mouseover preview is blank. Cause The Console's window position is off the edge of the screen. When the Veeam Backup &...

Invalid backup configuration: Team chats backup using protected APIs must the enabled to protect Team chats.

Challenge After upgrading Veeam Backup for Microsoft 365 from v5 to v6a, during the next backup run, or when editing the job or organization, the following error occurs: Invalid backup configuration: Team chats backup using protected APIs must the enabled to protect Team chats. Issue Prevention...

Veeam Plug-In for Microsoft Azure Worker Size Information

Purpose This article documents information regarding the Veeam Plug-In for Microsoft Azure worker size and configuration. Solution In Veeam Plug-In for Microsoft Azure , worker VMs are responsible for data transfer, including backup and restore operations, maintaining existing backup chains, and...

Build Numbers and Versions of Veeam Backup for Salesforce

This KB article lists all versions of Veeam Backup for Salesforce and their respective build numbers. For more information on downloading the latest version of Veeam Backup for Salesforce , visit: Veeam Backup for Salesforce Current Version Download Page Version | Build Number | Release Date |...

Build Numbers and Versions of Veeam Backup for Google Cloud

This KB article lists all versions of Veeam Backup for Google Cloud and their respective build numbers. For more information on deploying the latest version of Veeam Backup for Google Cloud , visit: Veeam Backup for Google Cloud User Guide: Deploying Backup Appliance Veeam Backup for Google Cloud...

Veeam Support Statement Regarding SQL 2012 LocalDB EOL

Details When operating in Standalone or Managed by agent mode, Veeam Agent for Microsoft Windows version 5 and all previous versions utilize Microsoft SQL Server 2012 Express LocalDB. Microsoft has announced that SQL Server 2012 will reach End-of-Life on July 12, 2022. However, Veeam Agent for...

My Account Portal "Recovery email for case contact" Guide

Purpose The Recovery email for case contact is a feature within the My Account portal that allows each customer to assign an additional email address which will be CC'd on all emails sent by Veeam Support from a case. This additional email address does not have to be associated with the customer'...

Veeam Backup for Nutanix AHV 3a Release Notes

A newer version of Veeam Backup for Nutanix AHV is available: Veeam Backup for Nutanix AHV Download Page Requirements To upgrade to Veeam Backup for Nutanix AHV 3a, download the installer below and run it on the Veeam Backup & Replication server that manages the AHV Backup Proxys. If you are...

Veeam Plug-In for Oracle RMAN Cumulative Patch P20211211

Requirements Veeam Plug-In for Oracle RMAN Cumulative Patch P20211211 requires at least Veeam Backup & Replication v11 GA 11.0.0.837. The Veeam Plug-In for Oracle RMAN package on this article is also included with the Veeam Backup & Replication 11a P20211211 installer ISO. It is provided here as ...

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...

Linux Guest File Restore Cannot Connect Backup Datastore to ESXi Host

Challenge While performing a Guest Files restore for "Linux and other..." the restore operation fails with the following error: Failed to mount restore point. Linux FLR appliance deploy failed Failed to connect backup datastore to the ESXi host Failed to add NFS datastore for NFS host, Failed to...

"400 - Bad request - Value cannot be null. Parameter name: token" when performing Microsoft Teams backup

Challenge Microsoft Teams backup may fail with "400 - Bad request - Value cannot be null. Parameter name: token" error. Cause If a user never opened the Files tab of a team channel in Microsoft Teams, this tab is not linked to the Files document library in a corresponding SharePoint team site. In...

Release information for Veeam Service Provider Console v5

A newer version of Veeam Service Provider Console is available, review Veeam for service providers: Download for more information. Requirements Please confirm that you are running version 4 build 4.0.0.4877 or later prior to upgrading. You can check this under Configuration | Support Information ...

Release Information for Veeam Backup for AWS 3.0 patches

Requirements You can check your build number under Configuration | Support Information | About | Server version by clicking the gear icon at the top-right corner of the main menu in Veeam Backup for AWS. After installing Veeam Backup for AWS v3 Patch 1, your build version will be 3.1.0.57...

“Secondary index is corrupt" error in ConnectWise Manage plugin after upgrading to Windows 10 version 2004

Challenge After upgrading the machine where Veeam Service Provider Console is installed to Windows 10 version 2004, ConnectWise Manage plugin stops working with the following error: "Secondary index is corrupt. The database must be defragmented or the affected index must be deleted. If the corrup...

Veeam Backup for Microsoft 365 Modern App-Only Authentication Limitations

Information Veeam Backup for Microsoft 365 v8 and higher Due to Microsoft's deprecation of Basic Authentication, the only option available when adding a new Microsoft 365 organization to Veeam Backup for Microsoft 365 v8 is Modern App-Only Authentication. Veeam Backup for Microsoft 365 v7 and v7a...

Required Roles and Permissions for Veeam Backup for Microsoft Azure

You want to create manual permissions for your Azure account service account for Veeam Backup for Microsoft Azure or for a repository account. The Azure or service account is responsible for: Synchr...

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 &...

SharePoint Online and OneDrive for Business Backup Jobs Fail with (403) Forbidden Warning Message

Challenge SharePoint Online or OneDrive for Business backup jobs fail with the following message: Processing site https://site.sharepoint.com/sites/111/subsite finished with warning: Failed to backup item version: //1024/Shared Documents/, version: 1.0, The remote server returned an error: 403...

Exploring VBO365 backups: Understanding Different Restore Scopes

Challenge You can explore backups in three different scopes: Backup Job , Organization , All organizations. Consider the following organizations added to the Veeam Backup for Microsoft 365 backup infrastructure; each of these organizations uses its own backup repository to store data: Organizatio...

Microsoft Windows OS is stuck on boot screen after Veeam CBT driver is installed

Challenge The Microsoft Windows OS is stuck on the boot screen after the Veeam CBT driver is installed. Cause The issue occurs if you have the Veritas System Recovery software installed on the Veeam Agent machine. The Veeam CBT driver is incompatible with the VTrack driver provided by Veritas...