Exchange backup fails after upgrading to Veeam Backup for Microsoft 365 v5

Challenge After upgrading Veeam Backup for Microsoft 365 to v5, backup of Exchange Online data may fail with " Unauthorized 401" error. The issue affects organizations using Modern authentication and legacy protocols with application secret. Cause Starting v5 Veeam Backup for Microsoft 365 has...

VeeamCDP I/O filter cannot be installed "Error: the operation is not allowed in the current state"

Challenge The installation of the Veeam CDP I/O Filter fails during deployment with the following error: Error Installing VeeamCDP components on cluster: ... Error: the operation is not allowed in the current state Error Failed to install VeeamCDP I/O filters: Failed to install VeeamCDP I/O...

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...

Upgrading/Uninstalling Veeam Backup & Replication fails with "Error 1327. Invalid Drive: [a-z]:\" or "Warning 1327. Invalid Drive [a-z]:\"

Challenge While upgrading or uninstalling Veeam Backup & Replication, the installer stops and displays either of the following messages: Warning 1327. Invalid Drive: F:\ Copy Error 1327. Invalid Drive: F:\ Copy Note: The drive letter in the message may be any drive letter. Cause The settings in t...

Veeam Plug-In for Oracle RMAN Cumulative Patch P20210507

Challenge A backup using the RMAN plug-in fails with the following error: ORA-19511: non RMAN, but media manager or vendor specific failure, error text: Operation is terminated. Copy Cause The failures can happen due to desynchronization between different threads started in different backup...

Veeam Service Provider Console v5 Patch 3

This patch has been superseded by Veeam Service Provider Console v5 Patch 4. Requirements Please confirm you are running version 5.0.0.6726 or later before installing Patch 3. You can check this by logging in to the backup portal and navigating to the Configuration Support Information tab. After...

How to Attach Files to a Veeam Support Case

Purpose This article documents how to attach files to a Veeam Support case. Methods Below are the two methods portal or SFTP used to attach files to a support case. Expand a section to learn more. Attach files to the Support case via the My Account portal. 1. Sign In to the My Account portal. 2...

How to Configure Connections Required for Veeam Backup for Google Cloud in Highly Secured Environments

If your backup appliance is deployed in a highly secured environment with all outbound connections restricted, you must perform the following configuration steps to make Veeam Backup for Google Cloud function properly: 1. Allow internet access to the following Google Cloud APIs: Compute Engine AP...

Veeam My Account Sign In FAQ

Below are the most commonly asked questions. Click to expand Which email should I use to log in to the Veeam My Account Portal? You should use your email associated with the company you work with. If you have worked with Veeam Support before, search through your email client to see which email...

Veeam Backup for Microsoft 365 5b cumulative patch KB4158

This update has been superseded by Veeam Backup for Microsoft 365 5с Requirements Please confirm you are running Veeam Backup for Microsoft 365 build 5.0.1.179, 5.0.1.207, or 5.0.1.225 prior to installing this cumulative patch KB4158. You can check this under Help and Support About in Veeam Backu...

"The remote server returned an error: (403) Forbidden. Access denied" when performing Veeam Backup for Office 365 backup

Challenge Backup and restore operations in Veeam Backup for Microsoft 365 fail with the error: The remote server returned an error: 403 Forbidden. Access denied Impacted Configurations Backup operations for Veeam Backup for Microsoft 365 deployments with Organizations using these authentication...

Veeam CDP service does not start after the installation of the storage integration plug-in

Challenge Certain primary storage integration plug-in setup programs leave the Veeam Continuous Data Protection Veeam CDP service stopped after the installation. The following plug-ins are affected: Dell EMC SC Compellent Plug-In for Veeam Backup & Replication Tintri IntelliFlash Plug-In for Veea...

My Account Portal: "No licenses can be found for your account"

Challenge After logging in to the My Account portal, the "No licenses can be found for your account" message is shown on the "Production licenses" page. Solution This issue often happens for one of two reasons: 1. There are multiple companies linked to your Veeam Account, and you may need to swit...

The provided client secret keys are expired.

Challenge Veeam Backup for Microsoft 365 displays one of the following errors: The provided client secret keys are expired. Copy Error: AADSTS7000222: The provided client secret keys are expired. Visit the Azure Portal to create new keys for your app, or consider using certificate credentials for...

How to uninstall Veeam CDP VAIO filter driver manually

Article Applicability This article documents the manual filter driver removal process. If Veeam Backup & Replication is available, the recommended method for uninstalling the I/O Filter is documented in the user guide. Veeam Backup & Replication - Updating and Uninstalling I/O Filter Objective Th...

GPG error: The following signatures were invalid: KEYEXPIRED

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 For the products of specific versio...

Veeam Agent for Microsoft Windows Installation fails with "Error 1920.Service Veeam Agent for Microsoft Windows (VeeamEndpointBackupSvc) failed to start" on Windows Server 2012 R2/8.1

Veeam Support Knowledge Base answer to: Veeam Agent for Microsoft Windows Installation fails with "Error 1920.Service Veeam Agent for Microsoft Windows VeeamEndpointBackupSvc failed to start" on Windows Server 2012 R2/8.1...

Veeam Backup for Nutanix AHV possible backup corruption

Challenge Due to a known issue in rare cases Veeam Backup for Nutanix backups might get corrupted. Cause The issue appears on data read by libaio when memory is aligned by 512 bytes but not aligned by 4096 bytes. The issue can affect full backups as well as incremental ones. Solution The issue is...

Granular AWS Account Permissions for Adding an S3 Repository

This article documents the granular permissions required to add an S3 repository to Veeam Backup for AWS...

AWS User Account Permissions for Deployment of Veeam Backup for AWS Appliance

This article documents the granular permissions needed for deploying a new Veeam Backup for AWS appliance...

Granular AWS Account Permissions for Connection to and Upgrading of Veeam Backup for AWS Appliance

This article documents the granular permissions needed for connecting to an existing Veeam Backup for AWS appliance...

Veeam Backup for Microsoft 365 5b cumulative patch KB4135

This patch is superseded by Veeam Backup for Microsoft 365 5b cumulative patch KB4158 Requirements Please confirm you are running Veeam Backup for Microsoft 365 build 5.0.1.179 or 5.0.1.207 prior to installing this cumulative patch KB4135. You can check this under Help and Support About in Veeam...

Unsupported license deployment alarm in Veeam Service Provider Console

Challenge Veeam Service Provider Console displays the alarm: Unsupported license deployment. Shared license key Copy The Alarm Description states: The same license ID has been detected for the backups servers: Copy Cause This alarm occurs when the same license is detected as having been installed...

Monthly License Usage report is not generated when using Veeam Backup Enterprise Manager in the Veeam Cloud Connect infrastructure

This issue is fixed in thePatch 2 Challenge Monthly Licensing Report generation fails with "ReportingJob task error: System.ArgumentException: An item with the same key has already been added. " error if there is Veeam Backup Enterprise Manager in the Veeam Cloud Connect infrastructure. Solution ...

Release Information for Veeam Disaster Recovery Orchestrator v4

Veeam Disaster Recovery Orchestrator 4.0 is superseded by Veeam Disaster Recovery Orchestrator 5.0. Requirements Please confirm that you are running version 3.0 build 3.0.0.1770 or later prior to upgrading. You can check this in the VAO UI | Administration tab | About. After upgrading, your build...

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...

Release Information for DataCore 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 DataCore Plug-In v1.2.2, ensure that you are running Veeam Backup & Replication 12.3.0.3...

Veeam Service Provider Console v5 Patch 2

This patch has been superseded by Veeam Service Provider Console v5 Patch 3. Requirements Please confirm you are running version5.0.0.6726 or later before installing Patch 2. You can check this by logging in to the backup portal and navigating to the Configuration Support Information tab. After...

Release Information for Everpure FlashArray 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 Everpure FlashArray Plug-In v2.2.331, ensure that you are running Veeam Backup &...

Release Notes for Veeam Backup & Replication 11 Cumulative Patches

More Recent Version Available Please find the latest version of Veeam Backup & Replication here: Veeam Downloads - Latest Version Requirements Please confirm that you are running V11 GA build 11.0.0.837 of any earlier patch level prior to installing this update. You can check this under Help |...

Release Notes for Veeam Backup & Replication 11 Day 0 Update

This "Day 0" update is intended only for environments where Veeam Backup & Replication 11 RTM 11.0.0.825 is installed. If you are running Veeam Backup & Replication 11 GA build 11.0.0.837 or later, this update is not applicable to you, and should be ignored. Requirements This update enables...

Veeam Backup for Microsoft 365 5b cumulative patch KB4124

This patch is superseded by Veeam Backup for Microsoft 365 5b cumulative patch KB4158 Requirements Please confirm you are running Veeam Backup for Microsoft 365 build 5.0.1.179 prior to installing this cumulative patch KB4124. You can check this under Help and Support About in Veeam Backup for...

"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...

Patching of Veeam Recovery Media fails with "ISO: FATAL ERROR:write_file: failed to create file /tmp/veeam/livecd-..., because Too many open files"

Challenge The patching of the Veeam Recovery Media fails with the error: ISO: FATAL ERROR:writefile: failed to create file /tmp/veeam/livecd-..., because Too many open files Cause Veeam Agent reaches the limit of concurrently opened files during the ISO image unpacking that is performed by means ...

SMB credentials cached by macOS

Challenge After you change credentials for the SMB share in the backup policy settings and re-apply the backup policy, macOS may still use obsolete credentials to connect to the SMB share. As a result, if incorrect credentials are specified in the backup policy settings, the policy application an...

"Too many open files" error during SAP on Oracle backup

Challenge The backup job performed by Veeam Plug-in for SAP on Oracle fails with the following error: "Too many open files. Please increase the file descriptor limit. You may refer to the KB 3213 for more information" Cause The "Too many open files" error happens when a process needs to open more...

Release Information for Veeam Backup for Nutanix AHV 2.1

This update has been superseded by Veeam Backup for Nutanix AHV 3.0. Requirements Be sure to review the upgrade check list section of the User Guide document closely prior to upgrading as Veeam Backup for Nutanix AHV 2.1 supports integration with Veeam Backup & Replication version 10 and later. Y...

Veeam Service Provider Console v5 Patch 1

This patch has been superseded by Veeam Service Provider Console v5 Patch 2. Requirements Please confirm you are running version 5.0.0.6726 before installing Patch 1. You can check this by logging in to the backup portal and navigating to the Configuration Support Information tab. After upgrading...

How to Attach a File Larger Than 5GB to a Support Case

Purpose This article documents how to attach an individual file to a case larger than the My Account portal's 5GB per file limit. Solution Option 1: Use SFTP Files larger than 5GB may be uploaded to a support case via SFTP. More information on SFTP can be found here: https://www.veeam.com/kb1661...

Veeam Service Provider Console Plugin for ConnectWise Automate opens empty configuration in ConnectWise Automate Control Center

Challenge After successfully installing the Veeam Service Provider Console Plugin for ConnectWise Automate, the Integration tab for Veeam Service Provider Console displays no data. Cause Lack of permissions for account used to log in to ConnectWise Automate and coexistence of 2 plugins: Veeam...

Release Information for Veeam Backup for Microsoft Azure v2

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 Microsoft Azure. After installing, your build number will be 2.0.0.303. What's New Veeam Backup fo...

Release information for Veeam Backup & Replication 11

Requirements IMPORTANT NOTE: If you are using a cloud repository or cloud host powered by Veeam Cloud Connect, please contact your service provider to confirm that you can upgrade to Veeam Backup & Replication 11. Please confirm that you are running version 9.5 Update 4b build 9.5.4.2866 or later...

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 ONE 11

This version has been superseded by Veeam ONE 11a. Requirements Make sure you are running Veeam ONE version 9.5 Update 4 build 9.5.4.4566 or later builds prior to installing this update. You can check this under Help | About in Veeam ONE console. After upgrading, your build will be version...

How to specify an Azure Active Directory tenant for Azure Cloud Credentials wizard to use

Challenge You are adding a Microsoft Azure account to Veeam Backup & Replication. You need to select the method of importing your Azure Resource Manager subscription, and you want to use an existing Azure Active Directory Account. Also, you have more than one Azure Active Directory tenant...

Build Numbers and Versions of Veeam Backup for Microsoft 365

This KB article lists all versions of Veeam Backup for Microsoft 365 and their respective build numbers. For more information on downloading the latest version of Veeam Backup for Microsoft 365, visit: Veeam Backup for Microsoft 365 -- Current Version Download Page Veeam Backup for Microsoft 365 ...

How to enable "Restore to Azure" Generation 2 VM Support

Feature Change in Veeam Backup & Replication 12.1 and higher Starting in Veeam Backup & Replication 12.1, the setting AzureEnableGeneration2VMRestore is now hard-coded to true. This change enables the restore to Microsoft Azure to generate Generation 2 VMsby default. Purpose This article document...

Veeam Backup for Microsoft 365 retention policy miscalculation causing data loss

Challenge When you have deployed Veeam Backup for Microsoft 365, use snapshot-based retention and storing data on a Jet Database-based repository then your solution might mistakenly remove restore points of Exchange data that are still valid. This applies to versions 5.0 Day 0 Update and earlier...

How to configure registry settings for Microsoft Azure Data Box device

Reference Article This article is referenced by the Veeam Backup & Replication User Guide. Adding Azure Data Box Storage: Before You Begin Before you add Microsoft Azure Data Box to the Veeam Backup & Replication backup infrastructure, create the following registry key on Veeam Backup Server: Key...

“Object reference not set to an instance of an object” error when initiating SharePoint restore

Challenge On a host with both Veeam Backup for Microsoft 365 and Veeam Backup & Replication installed, SharePoint restore initiated from Veeam Backup & Replication fails with "Object reference not set to an instance of an object" error. Cause This error occurs if the content type of a restored it...