Hyper-V Resilient Change Tracking Performance Issues

Challenge General Hyper-V OS performance degradation can occur when using a backup solution to export Hyper-V VM snapshots during backup operations. Solution Based on investigations between Veeam and Microsoft, two underlying causes have been identified. Resilient Change Tracking Resilient Change...

"Database connection settings for the Microsoft Entra ID backup repository cannot be found."

If you are encountering this error after recently upgrading to Veeam Backup & Replication 12.3, and that upgrade failed on the first attempt, and you attempted the upgrade a second time, please review the section discussing "For Customers Who Ran the Upgrade a Second Time and It Succeeded" on...

Minimum supported OS version for Veeam VSS Hardware Provider is Microsoft Server 2012 (64-bit only).

Challenge An attempt to rescan, upgrade, or update the Veeam Backup Server fails with the error: Minimum supported OS version for Veeam VSS Hardware Provider is Microsoft Server 2012 64-bit only. Cause This issue occurs because an entry in the Configuration Database causes the Veeam Backup &...

How to Collect Process Dumps and Logs

Article Applicability This article was created to complement KB1727 and provide customers with specific instructions to collect information that will: Help Veam Support identify if the job or task is actually stuck or if it is working on something in the background. Help the Development team...

Veeam Backup for AWS Private Network Deployment Automation

Purpose This article provides information about Veeam Backup for AWS support for private deployment mode. It will explain how to use the attached script to configure network settings for buckets used as repositories and workers used for backups. To learn more about implementing Private Deployment...

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This update was superseded by Veeam ONE 12.1.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...

Adding Linux Server Without Elevation: "Installing Installer service Error"

Challenge When adding a Linux Server to Veeam Backup & Replication using a non-root account and not enabling the "Elevate account privileges automatically" option, the following error is shown: RPM-based Linux distributions Installing Installer service Error: Error: error: can't create transactio...

CANNOT_EXECUTE_FLOW_TRIGGER. You or your organization has exceeded the maximum limit for this feature.

Challenge When performing a restore involving multiple records, one or more records fail to be restored with the following Salesforce error message: CANNOTEXECUTEFLOWTRIGGER. You or your organization has exceeded the maximum limit for this feature. Error ID: XXX-XXX XXX organization has exceeded...

How to Migrate Backup Data Between Repositories for Veeam Backup for Microsoft 365

Purpose This article provides information regarding migrating backup data between JET-based backup repositories and from a JET-based backup repository to a non-immutable object storage repository when using Veeam Backup for Microsoft 365. This article documents how to migrate backup data between...

SQL VSS writer fails for SQL localdb on Azure AD Connect Sync server.

Challenge Backup or replication jobs with Application Aware Image-Processing enabled may fail on the server hosting Azure AD Connect Sync with an error indicating the SQL writer has failed. After the job has failed, running "Vssadmin list writers" from an administrative command prompt on the Azur...

Zip Slip Vulnerability

Challenge Veeam is aware of the Zip Slip Vulnerability, which affects jobs with the guest file system indexing option enabled. Zip Slip is an arbitrary file overwrite vulnerability in multiple ZIP decompression algorithm implementations that affects thousands of software products across many...

Not All Privileges are Assigned to Caller error during upgrade/install

Challenge When upgrading, the installer encounters the following error message which prevents it from proceeding: "Not all privileges or groups referenced are assigned to the caller" Affected Application Installers Veeam Backup & Replication Veeam Backup Enterprise Manager Veeam ONE Veeam Recover...

Appliance Mode (Hotadd) isn't available if proxy VM and its replica are running under the same vCenter

Challenge A VMware Backup Proxy is not processing VMs using Virtual Appliance HOTADD mode, despite meeting all requirements. Cause Veeam Backup & Replication uses VDDK to communicate with VMware infrastructure. Starting with VDDK 6.0, VMware added additional logic to validate possible transport...

Recovery Media Creation and Servers with Cluster Shared Volumes

Challenge The Windows Agent Backup job for a failover cluster node with a cluster shared volume displays the following notice: Skipping recovery media collection: cluster contains CSV disks Attempting to create recovery media manually using the Recovery Media Creator on the failover cluster node...

Your backup administrator chose not to enable this functionality.

Challenge In the process of importing encrypted backup files for which you do not have the password, attempting to use the "I have lost the password" feature produces the error: Your backup administrator chose not to enable this functionality. Cause This occurs because the backup file was created...

Veeam Explorer for Microsoft Exchange: Could not establish trust relationship for the SSL/TLS secure channel

Challenge When restoring items with Veeam Explorer for Microsoft Exchange or sending them as attachments, the following error occurs: The request failed. The underlying connection was closed: could not establish trust relationship for the SSL/TLS secure channel Cause There are two possible causes...

Monitoring of standalone hosts fails

Challenge No topology is created for standalone ESX/ESXi hosts. nworks logs contain the following errors: 0.0017 EXCOL+ VP120 retrieveHostProperties failed, buildMorList: zero count at nworksCore.Collectors.VimUtil.buildMorListList1 nodes at...

How to Manually Update GPG key on Veeam Appliances

Article Applicability This article is specifically regarding the Veeam Appliances used in conjunction with Veeam Backup & Replication 13. Including the Veeam Software Appliance, Veeam Infrastructure Appliance, and Veeam Hardened Repository deployed from the Veeam Infrastructure Appliance. For...

Veeam ONE Upgrade Fails with "Win32 exception occurred while executing SQL script."

Challenge When upgrading Veeam ONE from version 12.3 to version 13, the following error occurs: Win32 exception occurred while executing SQL script. Error code: 0x80004004. Error details: The SELECT permission was denied on the object 'sysjobs', database 'msdb', schema 'dbo'. Cause This error...

How To Enable DDBoost Immutability with Governance Mode

Purpose This article provides additional information for enabling immutability for the Dell Data Domain deduplicating storage appliance when using governance mode, as referenced in the Veeam Backup & Replication User Guide here: Veeam Backup & Replication User Guide Backup Infrastructure Componen...

Veeam Backup for Microsoft Azure Vulnerability - CVE-2025-23082

Veeam Software Security Commitment Veeam® is committed to ensuring its products protect customers from potential risks. As part of that commitment, we operate a Vulnerability Disclosure Program VDP for all Veeam products and perform extensive internal code audits. When a vulnerability is...

Repeat Email Notification: "License update interrupted: Paid license is not installed."

Challenge After installing or upgrading to Veeam Backup for Microsoft 365 version 8 using Community Edition or an NFR Not-For-Resale license, email notifications are sent daily that state that state: Veeam Backup for Microsoft 365 Failed to update license License updated interrupted: Paid license...

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...

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...

Release notes for Veeam Backup & Replication 10a Cumulative Patch P20210609

More Recent Version Available Please find the latest version of Veeam Backup & Replication here: Veeam Downloads - Latest Version This 10a release may only upgrade to 11a or higher. The build of Veeam Backup & Replication 10a P20210609 listed in this article is only compatible with upgrading to...

Veeam Agent for Microsoft Windows Job Displays the Warning: "Disk is running low on free space"

Challenge A Veeam Agent for Microsoft Windows backup job lists the warning: Disk is running low on free space Copy Log Example C:\ProgramData\Veeam\Endpoint\jobname \Job.jobname.Backup.log Info EpFreeSpaceHelper Volume 'New Volume D:', isSystem=False length is 10718543872 bytes. Free space...

"Item may have a virus reported by the virus scanner plug-in."

Challenge Backup jobs with SharePoint Online or OneDrive for Business items fail with the following warning: Processing OneDrive Username userurl finished with warning: Failed to backup item: filepath, Item may have a virus reported by the virus scanner plug-in. Error Message Change in Veeam Back...

Tape job fails with “The specified network resource or device is no longer available” or “The system cannot find the file specified. Problem with CreateFile in '\\.\Tape0'”

Challenge Tape job fails with the following error messages: The system cannot find the file specified. Problem with CreateFile in '\.\Tape0'. The system cannot find the file specified. The system cannot find the path specified. The specified network name is no longer available. Copy Cause The...

Sensitive data types in Veeam Backup & Replication and Veeam Backup for Microsoft 365 log files

Challenge When you open a support ticket, Veeam Customer Support specialists may request log files. These log files may contain information to which the terms of the data protection laws or internal company policies apply. Veeam Backup & Replication Veeam Backup & Replication log files may includ...

Installer Error: "This installation cannot be updated automatically." or "Unable to proceed with the setup"

Challenge When attempting to update Veeam software, the following error occurs: This installation cannot be updated automatically. Please contact Veeam customer support for assistance with manual update. Alternatively, the following error occurs: An error has occurred: Unable to proceed with the...

Procedure to split Veeam Backup & Replication Server and Veeam Cloud Connect Server

In the situation where the same Veeam Server is used to serve both Backup and Replication services, and Veeam Cloud Connect, Veeam is requiring service providers to split these two services into two d...

Task fails with error: Application is Shutting Down

Challenge Jobs of any type fail with the error, "Application is shutting down." For example: Application is shutting down. Failed to download disk. Shared memory connection was closed. Failed to upload disk. Agent failed to process method DataTransfer.SyncDisk Copy BackupSynthesizedStorageToTape...

Antivirus Exclusions for Veeam Agent for Microsoft Windows

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 Microsoft Windows. These antivirus exclusions may be applied to the Windows built-in antivirus or third-party antivirus software. Note:...

How to Simulate Veeam Backup & Replication Disk I/O

Purpose This article provides examples of using common workload simulators diskspd and fio to simulate Veeam Backup & Replication disk I/O. Do Not Send Test Output Files to Veeam Support The write test output files testfile.dat do not contain diagnostic data. As such, please do not attach them to...

Job Fails to Start Due to Timeout Caused by Desktop Heap Allocation Failure

Article Applicability The timeout error displayed in Veeam Backup & Replication can be caused by various factors. This article explicitly addresses a scenario where the Windows OS experiences a 'heap allocation' failure. Please note that the solution provided in this article is only applicable if...

Veeam Backup Temporary Snapshot

Challenge A snapshot named VEEAM BACKUP TEMPORARY SNAPSHOT is found on a VMware Virtual Machine. Cause As detailed in the Veeam Backup & Replication User Guide, a snapshot is created on a VM that is being processed by a Veeam job. This creation of this snapshot causes the VM's base disks to be in...

Removing Stuck VMDK From the Veeam Proxy

Challenge A virtual machine VM processed with Veeam Backup & Replication VBR has a warning that consolidation is required, but consolidation attempts fail. or A VM that VBR processed is found to have one or more orphaned snapshots a snapshot that is attached to the VM but does not show up in the...

How to Forcibly Stop Stuck Jobs

Notice of Future Change This article may be retired in the future. As the product has matured, the incidence of jobs or tasks becoming "stuck" has decreased significantly. However, there are instances where a job might be executing a background task, giving the appearance that it has become stuck...

Time difference between Veeam Monitor server and ESX host is too large.

Challenge When attempting to add a vCenter Server or a standalone host with a different time zone, the operation may fail with the error: Failed to connect to "". Time difference between Veeam Monitor server and ESX host is too large. Make sure that NTP is enabled on ESX host and try again. Cause...

User authentication failed

When adding an ESX server to Veeam Backup and Replication console and specifying SSH Connection Settings the error message pops up: "Failed to login to "servername" by SSH, port 22, user "user", elevateToRoot False, autoSudo False User authentication failed...

How to Start a SureBackup Job in Troubleshooting Mode

Purpose This article documents how to start an individual VM that has failed SureBackup validation in "Troubleshooting mode." Solution Troubleshooting Mode causes the selected VM in the SureBackup job to be powered on and remains on, despite possible test failures. This can be very useful for...

An application-specific permission settings prevent COM Server application from running locally

The nworks discovery is not working and topology is not created. User does not get ‘SVDISC’ messages, but they get the following message instead: "The application-specific permission settings do not grant Local Launch permission for the COM Server application with CLSID and APPID to the user NT...

Could not apply snapshot: Device has active dirty bitmaps

Challenge When the user attempts to use the Rollback function for a snapshot on a Proxmox Virtual Environment PVE Virtual Machine VM that is protected by Veeam Backup & Replication, the following error occurs: qemu-img: Could not apply snapshot '%%': Device has active dirty bitmaps Cause This err...

Veeam Kasten GSB backups fail with the error "mkdir /tmp/kopia-log: read-only file system"

Challenge The backup for the workloads that uses Generic Storage Backup GSB fails with the error: mkdir /tmp/kopia-log: read-only file system\r\nUnable to create logs directory: mkdir /tmp/kopia-log: read-only file system Cause Veeam Kasten for Kubernetes 's datamover needs write access to the /t...

NAS Backup to Tape and FLR fails with "Invalid ACL data"

Challenge A File to Tape Backup job e.g., SMB Share to Tape, NFS Share to Tape, or File Server to Tape or a File Restore from Tape fails with the error: Error Invalid ACL data. Error: Unable to find ObjectVersion in cache for the file. File path: X Other symptoms include: A failing file enumerati...

How to Configure WDS to PXE Boot Veeam Agent for Microsoft Windows Recovery Media

Purpose This article documents a method to configure Windows Deployment Services WDS to PXE boot the Veeam Agent for Microsoft Windows Recovery Media over a network. Solution General Guidance Disclaimer The information provided below is intended only as general guidance. The method and...

Veeam Installer Service Displays Previous Version Despite Being Updated

Challenge After upgrading Veeam Backup & Replication, the Veeam Installer Service on other machines managed by Veeam Backup & Replication may be listed in Apps and Features or Programs and Features with a version that does not match Veeam Backup & Replication version. For example, an environment...

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:...

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...

Build Numbers and Versions of Veeam Agent for Oracle Solaris

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