Impact of Microsoft EWS Deprecation on Microsoft Teams backup

Challenge Due to a recent change deprecating an earlier API EWS, backups of Microsoft Teams may complete with a "Success" status, while no new channel posts were backed up. Solution As it was announced before, Microsoft is deprecating the ability for EWS APIs to access the TeamsMessagesData folde...

Backup Job Identifies Teams Tabs as Unsupported and Skip Them

Issue A backup job skips Microsoft Teams tabs from processing without displaying any error or warning. Cause Every tab in Microsoft Teams has an Application ID property, which is used by the backup jobs to determine which tabs are supported or unsupported. Due to recent changes, some supported...

Veeam Explorer for Microsoft Teams Error: "Tab type is not supported"

Challenge The Tenants of a Service Provider, who has recently upgraded to Veeam Backup for Microsoft 365 version 7.0.0.3604 P20230512, may receive the following error when attempting to restore using Veeam Explorer for Microsoft Teams: Tab type is not supported. Cause This error occurs because th...

After removing and adding items from the OneDrive folder, Veeam Backup for Microsoft 365 may skip backup items

Challenge The Veeam Backup for Microsoft 365 Dev team has identified an issue where Veeam Backup for Microsoft 365 may skip items in a SharePoint Document Library or List when a large number of items are rapidly added, removed, and added again. For example, If a user adds 20 or more items to the...

Support Statement regarding Microsoft CVE-2023-24932

Challenge Microsoft recently released update KB5025885 containing changes to secure boot. These changes require specific actions to be taken to continue using Veeam Agent for Microsoft Windows bare metal recovery media and other restore operations. After applying the Microsoft Update with...

Unable to Select Clustered Instance When Configuring Backup

Article Applicability This article concerns a behavior observed when using Veeam Plug-in for Microsoft SQL Server. Challenge When selecting Databases to Backup Up, the Instance drop-box does not list an option for cluster \instance; instead , there is only an option for node \instance. In some ra...

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...

The Veeam KB Resource Hub

Top 10 Most Popular KBs for Q1 2026 1. KB1832: How to Collect Logs for Veeam Backup & Replication 2. KB1999: Antivirus Exclusions for Veeam Backup & Replication 3. KB4687: Unable to Interact with Some Hypervisors and Cloud Platforms 4. KB1471: How to Manually Back Up Veeam Configuration Databases...

How to Test Port Connectivity

Purpose This article documents how to test connectivity between two machines over a specific port. Product Service Ports Most connection errors involving ports in the 61xx, 93xx, 94xx, and 10xxx ranges are related to Veeam product-related services. Determine if the port in the connection error is...

Release Information for Veeam Backup for Google Cloud 4 Patch 1

Requirements Before installing this patch, please confirm that you are running Veeam Backup for Google Cloud 4 build 4.0.0.1072. 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...

How to Collect Logs for Veeam Plug-in for Microsoft SQL Server

Purpose This article explains how to collect the logs required for a support case involving Veeam Plug-in for Microsoft SQL Server. Solution Quick Start Automated Veeam Plug-in for Microsoft SQL Server Log Collection If the Windows machines where Veeam Plug-in for Microsoft SQL Server is installe...

Backup of Microsoft Teams Fails With: Object reference not set to an instance of an object

Challenge Backup of Microsoft Teams in Veeam Backup for Microsoft 365 fails with the following error: Error: Object reference not set to an instance of an object. Copy Cause This issue is related to recent changes in the response syntax of the Microsoft Graph API to a specific request that Veeam...

Release Information for Veeam Recovery Orchestrator 6 Cumulative Patches

Requirements This Cumulative Patch can be used to: update manually from a previous Veeam Recovery Orchestrator 6 release to the latest Cumulative Patch. upgrade an existing Veeam Recovery Orchestrator 5 server to Veeam Recovery Orchestrator 6 with the latest Cumulative Patch. install a new...

Release Information for Veeam Backup for Nutanix AHV 4a

Requirements To upgrade to Veeam Backup for Nutanix AHV 4a, download the installer below and run it on the Veeam Backup & Replication server that manages the AHV Backup Appliances. The Veeam Backup for Nutanix AHV 4a Plug-In must be installed before updating the Nutanix AHV Backup Appliance. You...

StoreOnce and Veeam Immutability Compatibility

Challenge A backup job that targets an HPE StoreOnce Catalyst repository may display either of the following messages: In Veeam Backup & Replication 12.0, the job will fail and display the error: OSCLTERRIMMUTABLEEPOCHREQUESTEXCEEDSMAXIMUM. Err: -1817 In Veeam Backup & Replication 12.1, the job...

Release Information for Veeam Backup for Red Hat Virtualization 3a

This release was superseded by Veeam Backup for Red Hat Virtualization 3b. Requirements The Veeam Backup for Red Hat Virtualization 3a Plug-In may be used as part of a new deployment or to upgrade an existing Veeam Backup for Red Hat Virtualization Plug-In running versions 2.x - 3.x. After...

Release Information for Veeam Service Provider Console 7 Cumulative Patches

Newer Product Version Available A complete list of Veeam Service Provider Console versions and their release dates is available on KB4464: Build Numbers and Versions of Veeam Service Provider Console. Requirements Please confirm that you are running at least Veeam Service Provider Console 7 GA...

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...

The remote server returned an error: (401) Unauthorized for Microsoft Loop SharePoint sites

Challenge The Backup of a SharePoint site displays the following error message: Failed to initialize site processing: /contentstorage /CSP, error: The remote server returned an error: 401 Unauthorized. The URL of SharePoint sites created by Microsoft Loop sites can be identified by the...

Antivirus Exclusions for Veeam Agent for Mac

Purpose This article documents antivirus exclusions that may be created to reduce the impact that antivirus software has on the functionality of Veeam Agent for Mac. Note: Antivirus will not always cause Veeam Agent for Mac functions to fail; antivirus software may also negatively impact backup...

Veeam Backup for Microsoft 365 Backup Copy May Fail to Transfer Microsoft Teams Channel Messages

Challenge Issue Summary In certain situations, when using a Backup Copy Job with an Archive Appliance to copy data from a Backup Job that was set up solely to protect Teams data via Teams Export APIs, the transfer of Teams channel messages may fail. Requirements for the Issue to Occur This issue...

How to use Veeam Backup for Nutanix AHV/Veeam Backup for Red Hat Virtualization Proxy with Internal CA Certificates

Article Applicability The need to perform the procedures documented in this article has been eliminated through improvements to how certificates are handled, starting in the following versions: Veeam Backup for Nutanix AHV 5 Veeam Backup for Oracle Linux Virtualization Manager and Red Hat...

After Enabling MFA, Veeam Backup Server Is Listed as Inaccessible in Veeam Service Provider Console

Challenge After enabling multi-factor authentication MFA in Veeam Backup & Replication or Veeam Cloud Connect, that server may become listed as "inaccessible" within Veeam Service Provider Console yet the Veeam Management Agent for VSPC continues to display a "healthy" status. Cause When MFA is...

How to Unhide the Restore Reason Page

Purpose This article documents how to unhide the Reason tab in the Restore Wizard after the "Do not show me this page again " option has been checked, causing the Reason tab to no longer appear during future restores. Solution The "Do not show me this page again" setting and other user-specific U...

After Upgrade to Veeam Backup & Replication 12, Storage Rescan of IBM HyperSwap Volume Fails

Challenge After upgrading to Veeam Backup & Replication 12, Storage Rescan fails with: Failed to update information about IBM HyperSwap volumes. Please ensure that volumes on both sides of IBM HyperSwap relationships are included in the rescan scope in the storage properties. See KB4380 for...

Release Information for Veeam ONE 12 Cumulative Patches

This update was superseded by Veeam ONE 12.1. Requirements This Cumulative Patch can be used to: update from a previous Veeam ONE 12 release to the latest Cumulative Patch. upgrade an existing pre-12 Veeam ONEVeeam ONE 10a 10.0.2.1094 Veeam ONE 11 11.0.0.1379 Veeam ONE 11a 11.0.1.1880 server to...

Veeam Agent for Linux 6 blksnap module - Xen PV/PVHVM filesystem corruption

Article Applicability This article is relevant only if the answer to all three of these questions is "Yes." 1. Is Veeam Agent for Linux 6 in use? 2. Is Veeam Agent for Linux installed within a Xen PV/PVHVM virtual machine, specifically Citrix XenServer or XCP-ng? 3. Is that virtual machine runnin...

Quantum DXi Storage With Firmware 3.x Does Not Work with Veeam Backup & Replication 12

Challenge When attempting to add Quantum DXi storage with firmware 3.x to Veeam Backup & Replication, the following error is shown: Failed to StartAgent: Failed to construct ClientAgentProtocol. If the Quantum DXi storage was added to Veeam Backup & Replication prior to upgrading to Veeam Backup ...

Veeam Kubernetes Service Fails to Start - Error 1064

Article Applicability The service start 'Error 1064' can occur for other reasons, and this article documents an issue that only happened with the Kasten K10 plug-in versions before 12.0.1.4. Review the cause section carefully to identify if this article is related. Challenge When the short date...

How to Migrate Veeam Backup Enterprise Manager's Database from Microsoft SQL to PostgreSQL

Purpose This article documents the migration of the Veeam Backup Enterprise Manager Enterprise Manager configuration database from Microsoft SQL to PostgreSQL. Notes: The migration process is one-way only. Migration can only be performed from Microsoft SQL to PostgreSQL. Note: Starting in Veeam...

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...

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...

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...

How to use SQL Management Studio to Apply SQL-Based Hotfixes to the Veeam ONE Database

Purpose This article documents applying a SQL query script-based hotfix for the Veeam One database. Solution Identify the Location of the Veeam ONE Database If Veeam ONE is installed, open the Veeam ONE Settings Utility to view the current SQL Server settings. C:\Program Files\Common...

Release Information for Veeam Backup & Replication 12 Cumulative Patches

This update was superseded by Veeam Backup & Replication 12.3. Release Information Below are details about the Cumulative Patches that have been released for Veeam Backup & Replication 12. Each subsequent Cumulative Patch also includes all fixes present in the previous Cumulative Patches. P202307...

CVE-2023-27532

Article Applicability This article documents a vulnerability discovered in a core service of Veeam Backup & Replication and Veeam Cloud Connect. This vulnerability does not affect other Veeam products e.g., Veeam Backup for Microsoft 365, Veeam Agent for Microsoft Windows , Veeam ONE, Veeam Servi...

How to assign ProPartner Portal Roles

Purpose This article documents how to assign internal VCSP employees a Pulse user role to allow them access to the VCSP Pulse portal within the Veeam ProPartner setup. Note: Roles can only be assigned by the employee of the ProPartner holding the ProPartner manager role. Solution To adjust the...

Veeam Agent for Microsoft Windows backup job fails with "Veeam.Backup.AgentProvider.AgentClosedException" on Windows 7 and Windows Server 2008 R2

Article Applicability The issue documented in this article was fixed in Veeam Agent for Microsoft Windows 6.0.2.1090, which was released alongside Veeam Backup & Replication 12.0.0.1420 P20230412. Challenge A Veeam Agent for Microsoft Windows v6 Backup Job for a machine running Windows 7 or Serve...

How to Configure Azure Storage Account to Leverage Immutability with Veeam Backup & Replication

Purpose This article was designed to complement the information available in the Veeam Backup & Replication User Guide, specifically the required storage account and container settings to align with the Azure Blob Storage Immutability Limitations. This article describes the correct options that...

Error When Adding Veeam Backup for Microsoft 365 to Veeam ONE

Challenge When attempting to add Veeam Backup for Microsoft 365 to Veeam ONE, either of the following error occurs: Failed to connect to "localhost".404 Not Found Failed to add the Veeam Backup for Microsoft 365 server. The server version is not supported. Cause Both errors occur for the same...

Release Information for Veeam Backup for Salesforce 1 Cumulative Patches

This update has been superseded by Veeam Backup for Salesforce 2. Requirements Please confirm that you are running Veeam Backup for Salesforce 1 build 1.0.0.1429 or later before upgrading. You can find the currently installed build number in the Configuration About section. After the upgrade, the...

Task fails with "Repository is not compatible with Catalyst Store with fixed block setting enabled"

Challenge A Veeam Backup & Replication job targeting a StoreOnce Repository backed by a Catalyst Store that has Fixed Block Chunking enabled fails with either of the following errors: Repository is not compatible with Catalyst Store with fixed block setting enabled Error:...

Release Information for Veeam Backup & Replication 12 Day 0 Update

Update Applicability This "Day 0" update for Veeam Backup & Replication 12 is strictly intended for servers using the RTM release build 12.0.0.14 02. If Veeam Backup & Replication 12 GA build 12.0.0.14 20 is installed, this update can be ignored as it is not needed. All resolved issues listed in...

Veeam PowerShell cmdlets to help Automate Backup Copy Backup Format Upgrade

This article provides information about using Veeam PowerShell to automate the procedure of upgrading Legacy Periodic Backup Copy jobs to use the new True Per-Machine backup format. These PowerShell commands can be used to simplify the Backup Chain Format upgrade process...

Known NAS Backup Issues With Nutanix Files Integration

Known Issues Issue 1: Disabling "multi-protocol access" within Nutanix breaks NAS Backup When Nutanix storage has been added to Veeam Backup & Replication using Nutanix Files System integration, if "multi-protocol access" is disabled within the Nutanix configuration, Veeam Backup & Replication wi...

Veeam Backup & Replication Configuration Check displays error regarding unsupported Veeam Backup for Public Cloud product version

Challenge During the upgrade to Veeam Backup & Replication 12, if theConfiguration Check detects that the Veeam Backup for AWS Plug-In or Veeam Backup for Microsoft Azure Plug-in is installed, the upgrade will be halted with the error: Unsupported Veeam Backup for AWS version Unsupported Veeam...

Intermittent SAP HANA Log Backup Monitoring Failures

This article documents an error that may occur during an SAP HANA Log Backup. Challenge SAP HANA log backup monitoring fails to detect log backups during monitoring intervals. The following warning message precedes the RPO violation error in the action log for the log backup monitoring job: Curre...

Antivirus Exclusions for Veeam Plug-ins for Enterprise Applications

Purpose To ensure the performance and reliability of Veeam Plug-ins for Enterprise Applications, we strongly advise implementing the antivirus exclusions outlined in this article. Interference caused by security software will not always cause Veeam Plug-ins for Enterprise Applications to fail; so...

Case Administrator Creation Fails with: "It is not allowed to add a Case Administrator role to License Administrators, only to additional users"

Challenge When attempting to finalize the creation of a Case Administrator within the Veeam My Account Portal, the following error occurs: It is not allowed to add a Case Administrator role to License Administrators, only to additional users Cause This error occurs when the email you are attempti...

How to Upgrade .NET and ASP.NET Runtimes When Using Veeam ONE 12 GA (build 12.0.0.2498) or Lower

Article Applicability This article applies to Veeam ONE deployments running version 12 GA build 12.0.0.2498 or lower. The affected version of .NET discussed in this KB article is no longer used by Veeam ONE in version 12 P20230314 build 12.0.1.2591 or higher. We strongly recommend upgrading to th...