Hotfix to Improve Handling of Self-Signed Certificates Used By On-Prem Object Storage with IAM/STS Endpoints, Agent, VM jobs, and Cloud Connect

Article Applicability The hotfix discussed in this article is only necessary when using an on-prem object storage appliance that utilizes self-signed certificates, and you are being affected in the ways described in the Resolved Issues section. If you are not experiencing the errors listed in thi...

Immutability Warning for Data Domain Repository: "Immutability flag on backups was set with warning"

Challenge A backup job that targets a Dell Data Domain repository completes with the warning, "Immutability flag on backups was set with warning: ", specifically with the endings: Immutability period for some backups exceeds the maximum value allowed by the target repository, using the maximum...

'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 &...

Cloud Backup "Inner SQL exception in the service provider infrastructure"

The error documented in this article can occur due to various reasons. This article specifically addresses a single scenario related to the underlying SQL database engine used by the Veeam Cloud Service Provider. The log snippet provided in the 'Cause' section offers context to help confirm wheth...

Rescan of Windows Machine in Protection Group Fails With "The network path was not found."

Article Applicability This article addresses situations in which credential-based authentication is used to add a Windows machine to a Veeam Agent for Microsoft Windows protection group. The troubleshooting steps below address connectivity failures that occur when Veeam Backup & Replication...

Veeam Backup for Google Cloud Backup Stuck at 0%

Challenge Backup policies in Veeam Backup for Google Cloud are stuck at 0% progress. Cause This situation is caused by Google recently updating the latest Ubuntu Linux machine image available in their cloud to ubuntu-2204-jammy-v20230829. The existing worker VM methods utilized in Veeam Backup fo...

Exchange Backups failing with "Failed to access mailbox" starting September 13th, 2023

This issue is related to EX675238 listed in the Microsoft Health Dashboard, which caused some M365 environments to have issues with RESTAPI calls used to access the mailboxes externally...

Validator CLI Tool Fails to Process VMs in Per-machine backup with separate metadata files

Challenge When attempting to use the Veeam Backup Validator command-line tool to validate the VMs contained within a job that was using the Per-machine backup with separate metadata files aka True Per-VM backup chain format, the Veeam Backup Validator tool throws the error: Cannot find last point...

Veeam Backup & Replication support for VMware Cloud Director

Purpose This article provides information about compatibility between VMware Cloud Director and Veeam Backup & Replication. Solution The table below provides VMware Cloud Director compatibility information for the most recent version of Veeam Backup & Replication. Older VMware Cloud Director/vClo...

Security Issue in Microsoft Azure Plug-In for Veeam Backup & Replication

Issue Details This article highlights a security-related issue in Microsoft Azure Plug-In for Veeam Backup & Replication 12.1.5.99 that may allow a user accessing the Veeam Backup & Replication server to obtain the administrator credentials of the Veeam Backup for Microsoft Azure backup appliance...

Agent Backup Job Fails With "Veeam Backup and Replication version is not compatible with Veeam Agent for Windows"

Challenge After upgrading Veeam Agent for Microsoft Windows , the backup job fails to run and displays the error message: Error: Managed session has failed: Veeam Backup and Replication version is not compatible with Veeam Agent for Windows. Cause This error occurs when the version of Veeam Agent...

VMware Cloud Director 10.5 Partial Compatibility Patch

Intended Audience This hotfix is intended for customers who upgraded to VMware Cloud Director 10.5 and found that backup operations were impacted. Customers who have not yet upgraded to VMware Cloud Director 10.5 are advised to wait for full Cloud Director 10.5 support, which will be available in...

Backup Job to AWS S3 Repository Fails with "Failed to construct ClientAgentProtocol"

Challenge While attempting to execute a backup task within Veeam Backup & Replication directed towards an AWS S3 Bucket Repository, the backup process fails with the error: Failed to construct ClientAgentProtocol. Examining the logs reveals the following errors: In log: job.IP.BlobRepo.log ERR...

Veeam Backup for Microsoft 365 Updater Fails With: "Error opening installation log file."

Challenge For Veeam Backup for Microsoft 365 deployments from AWS Marketplace or Microsoft Marketplace, when attempting to install discovered updates or when the auto-updater attempts to update Veeam Backup for Microsoft 365, the update process fails with the error: Error opening installation log...

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:...

Full Restore Point Generated by Veeam Agent for Microsoft Windows Cluster Backup Is Larger Than Source Cluster

Challenge The Backup Job for a Failover Cluster, or its associated Backup Copy Job, generates full .vbk restore points that are larger than the source Failover Cluster. Cause During the cluster backup, Veeam Agent for Microsoft Windows will deduplicate the blocks within shared disks. However, if...

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...

Veeam.Archiver.Service terminates due to 'System.OutOfMemoryException' after updating to Veeam Backup for Microsoft 365 7.0.0.3968

Challenge Veeam.Archiver.Service consumes all available virtual memory and then terminates. The issue can be confirmed with the following Windows Events System log: The Veeam Backup for Microsoft 365 Service service terminated unexpectedly. It has done this 1 times. The following corrective actio...

Access Denied Error After Migrating Configuration from MFA-Enabled Server

Challenge After performing Configuration Restore using the Migration mode from a Configuration Backup created by a Veeam Backup & Replication server that had MFA enabled, login attempts using local accounts cause the Veeam Backup & Replication Console to display the error: Failed to connect to...

FC-Only Nimble Array Snapshot Failures in Veeam Backup & Replication P20230718

Challenge When using Veeam Backup & Replication 12 P20230718, rescan, backup, and restore operations may fail when the Nimble array is configured to only use Fibre Channel FC protocol. The request could not be understood by the server. Unexpected argument 'multiinitiator'. Solution A private fix ...

SSH Connection Failure to Linux Machine Requiring Multiple Sequential AuthenticationMethods

Challenge Connections to a Linux machine fail with the following errors: Authentication was partially successful, but server requires additional authentication with: 'password'. No suitable authentication method is supported. Supported methods: 'password'. Some tasks may not display these errors...

Unexpected Snapshot Deletion Failures in the Job Sessions for ONTAP 9.13.1

Article Applicability The issue documented in this article affects builds 12.0.0.1420 P20230718 and lower. This issue was resolved starting in Veeam Backup & Replication build 12.1.0.2131. Challenge VeeamAUX snapshots cannot be deleted immediately on ONTAP 9.13.1 or later; they are instead delete...

Possible Impacts of Removing the Machine Where Veeam Is Installed From a Domain

Purpose This article documents the most common side-effects customers may experience when removing the machine where Veeam Backup & Replication is installed from a domain. Solution Not all of the issues listed below may be experienced. These are all heavily dependent on the configuration of the...

Backup Repository in Invalid State - Causes and Troubleshooting Advice

This article is an extension of the Invalid State page within the Veeam Backup for Microsoft 365 User Guide. Purpose This article documents possible causes for a Veeam Backup for Microsoft 365 Backup Repository to be listed as having an Invalid status and provides troubleshooting advice. Note:...

Release Information for Veeam Backup for Red Hat Virtualization 3b

Requirements The Veeam Backup for Red Hat Virtualization 3b 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 installing the Veeam Backup for Red Hat Virtualization 3b Plug-In, the...

Granular Log Collection Guide for SOBR Capacity/Archive Tier Issues

Purpose This article documents an advanced granular log collection method designed to minimize the log bundle size when submitting Veeam Support cases for issues related to the capacity tier or archive tier of a Scale-Out Backup Repository. The standard method of collecting logs for these cases i...

How to Send a Test Email Notification Using PowerShell

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

Build Numbers and Versions of Veeam Plug-ins for Enterprise Applications

Plug-In Download The latest version of all Plug-Ins for Enterprise Applications can be found at the bottom of the My Products page within the My Portal, in the Application Plug-Ins under Additional downloads. View by Plug-in Build Number View by Veeam Backup & Replication Release This table lists...

Increase in API Calls when Performing Direct Backups to Immutable Object Storage

Article Applicability This article was created to address high API usage observed with Veeam Backup & Replication 12.x. Starting in Veeam Backup & Replication 13, improvements were made to the handling of immutability-related API calls, which will significantly reduce the number of API calls that...

Configuration Restore Fails With: "2200N: invalid XML content DETAIL: buffer full"

Challenge When performing a configuration restore or migration, the Restore process fails with the error: 2200N: invalid XML content DETAIL: buffer full Cannot read configuration backup Cause This error is caused by an underlying issue within PostgreSQL 15.1 and 15.2 PostgreSQL 15.1 was included...

Veeam Backup for Cloud Solutions Potential Data Loss

Challenge If, between the runs of a backup policy for a VM, a virtual disk is removed and added back to that same VM, data blocks belonging to that disk may be deleted from the backups during the retention process. This can lead to a data loss scenario. Impacted Product Versions: Veeam Backup for...

Veeam Cloud Service Provider Case Administrator FAQ

Intended Audience This article contains information that is relevant to Veeam Cloud Service Providers. If you are not a Veeam Cloud Service Provider, please review the following: KB2211: My Account Portal - Role Management FAQ Case Administrator Assignment Restrictions Attempting to assign a case...

Backup Fails With the Error “PKCS12 (PFX)”

Challenge A backup job fails with the error: PKCS12 PFX without a supplied password has exceeded maximum allowed iterations. See https://go.microsoft.com/fwlink/?linkid=2233907 for more information The issue may also manifest as a backup job being stuck in the queued state. In this specific case,...

Impact of tmux on Veeam Interactions With Linux OS

Purpose This article documents a known incompatibility between Veeam applications that initiate SSH connections to remote Linux machines and those Linux machines being configured to have tmux autorun when users connect. Connection Examples As stated, this issue affects all interactions wherein a...

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 Configure the Azure Restore Proxy Appliance Size

Purpose This article documents how to override the default Azure Restore Proxy Appliance size. Challenge Attempting to restore a Linux workload fails to Microsoft Azure when using a proxy appliance size that is not available for subscriptions that have VM size limitations. The following error may...

Build Numbers and Versions of Veeam Service Provider Console

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

Failed to get guest OS path for newly attached disk there are 2 new disks with uuid

Challenge A backup job using a Linux-based VMware Backup Proxy fails with the error: Failed to get guest OS path for newly attached disk /.vmdk: there are 2 new disks with uuid Cause This error occurs when the Linux-based VMware Backup Proxy processing the virtual machine has multipath enabled...

Veeam Agent for Microsoft Windows Built-In Case Creation fails with "The request was aborted: Could not create SSL/TLS secure channel"

Article Applicability This article is regarding an issue that impacts Veeam Agent for Microsoft Windows build 5.0.0.4301 or older, and was fixed in build 5.0.1.4584. Challenge When attempting to open a support case using the Technical Support button within the Veeam Agent for Microsoft Windows...

How to Configure a Custom Text Banner for the Veeam Backup & Replication Console

Purpose This article documents enabling and configuring the "Classified Stripe," a feature that can be configured to prominently display a banner in all Veeam Backup & Replication Consoles that connect to the Veeam Backup Server, including remote consoles. Use Case Examples This is the default te...

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 &...

WDAC Supplemental Policy for Veeam Backup & Replication Components on Azure Local

Azure Local is the new name for Azure Stack HCI Azure Stack HCI is now considered part of Azure Local. Learn more about this rename in the Microsoft Documentation: Renaming Azure Stack HCI to Azure Local. Veeam Backup & Replication Version Requirement The solution documented in this article...

Veeam Agent for Microsoft Windows Update Fails with "The digital signature of the downloaded update file is invalid"

Challenge The integrated Veeam Agent for Microsoft Windows Update check displays the error: The digital signature of the downloaded update file is invalid. Most likely, it got corrupted. Please, download the update again. An alternate message is a warning stating: Version is available but cannot ...

How to Set Custom VLAN ID in Recovery Media

Purpose This article documents how to configure the Veeam Agent for Microsoft Windows Recovery Media to use a specific VLAN ID. Use Case: You need to access a repository located in a different VLAN than the original machine was using. Solution Because the Recovery Media is based on WinPE, which...

Restore/Failover/SureBackup of Virtual Machines running Windows 8.1/Window Server 2012 R2 (or older) triggers chkdsk if Veeam Backup Server or Mount Server is Running Windows Server 2022 (or newer)

Challenge In the following scenarios, a Virtual Machine1 that was running Server 2012 R2/Windows 8.1 or lower will perform chkdsk on the first boot if the Veeam Backup Server is running Server 2022: A non-Domain Controller VM is being tested by SureBackup with the "Automatically disable Windows...

Unable to Add Object Storage With Versioning to Veeam Backup for Microsoft 365

Challenge When adding an Object Storage Repository, the following error occurs: The selected bucket supports blob versioning. Select a bucket with disabled blob versioning. Cause This issue occurs because the cloud storage has Versioning enabled. Starting with Veeam Backup for Microsoft 365 v7,...

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...

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...

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...

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...