How to Seed a Backup Copy Job

Purpose This article provides references to documentation explaining how to manually seed a Backup Copy job with Veeam Backup & Replication. Solution Veeam Backup & Replication User Guide: Creating Seed for Backup Copy Job Veeam Backup & Replication User Guide: Backup Copy Job Mapping If this KB...

Installation Fails with Patched Database

Article Applicability The issue documented on this KB is only relevant to Veeam Backup & Replication versions prior to v10. Starting with v10, a different error occurs for the same reason and is documented on KB4204. Challenge When installing Veeam Backup & Replication, selecting an existing...

Error: Credentials with id was not found

Challenge Error: Credentials with id '...' was not found Cause Credentials within database need to be reset. Solution When a job fails with the above error you will need to perform the following steps to resolve this issue: 1. Within the 'Backup Infrastructure' pane navigate to 'Windows Servers' ...

Error "A hard drive is missing" when performing file restore of VM

Challenge The version of Veeam Backup & Replication you are on likely does not support the Windows drive type. Cause In older versions of Veeam Backup & Replication, we were unable to perform File Level Recoveries on drives with the GPT type or marked as Dynamic with a spanned volumes. If you are...

Release notes for Veeam MP Integration Management Pack update

Challenge Maintenance mode synchronization in System Center 2012 Operations Manager SP1 Importing the updated Veeam Integration MP will resolve the known issue related to maintenance mode synchronization in System Center 2012 Operations Manager SP1. When a vSphere host enters the maintenance mode...

Not getting hardware sensor alerts in a timely manner

Challenge You do not receive information about specific alerts regarding host hardware sensors quick enough for your environment, both in the Veeam ONE Monitor GUI and e-mails. For example, a host goes offline and you do not get any alerts for 20 minutes. Or there is another delayed alerting...

Limitation on number of EDBs mounted in Veeam Explorer for Exchange

Challenge The number of databases that can be mounted in Veeam Explorer for Exchange at a time is currently limited to 15. Solution If the limit has been reached, you will not be able to mount new databases. You can manually remove unnecessary mailbox stores in Veeam Explorer for Exchange and the...

Buttons Disappear on Chinese localized servers in Veeam Backup & Replication object properties

Challenge On Chinese localized servers, buttons will not appear on standard DPI, but will show up instead once the DPI is increased to large. Solution To resolve, use Medium DPI 120 - 125% as opposed to Normal Small DPI 96 - 100%, or change the registry font settings. Note that editing the regist...

Cannot open database requested by login. The login failed

Challenge When you try to access Veeam ONE Web UI, the following error occurs: Cannot open database requested by login. The login failed. Cause Veeam ONE Web UI configuration is missing information on the account used for SQL authentication. Solution To modify configuration settings, follow the...

Re-IP issues: Win2008R2 with VMXNET 3 Adapter

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...

How to Run Multiple Instances of the Veeam One Client

Purpose This article documents to enable multiple instances of the Veeam ONE Client to be launched on the same machine. By default attempting to launch a second Veeam ONE Client while one is already running will change focus to the existing running Veeam ONE Client. The setting document in this...

VM Right-Sizing report fails with error "Query execution failed for dataset ‘AnalysisDS’"

Challenge VM Right-Sizing report fails with the following error: Query execution failed for dataset 'AnalysisDS'. Error converting data type varchar to numeric. Cause The error occurs because of unsupported decimal separator format on the Collector machine. A dot . is expected as the decimal...

File Level Restore Stuck

File level restore stuck in stopping or starting state...

Creating Replication Jobs in Backup & Replication version 6.x

Challenge How to create replication jobs. Solution To replicate virtual machines, you should create a replication job by means of the New Replication Job wizard. You can perform the created job immediately, schedule, or save it. Before You Begin • Prior to creating a replication job, make sure yo...

Veeam Management Pack Metric Definitions and VC Events

Purpose This article documents how to create custom alerts for monitoring setting changes within VMware vCenter and verifying the type of data being collected. For this purpose, Veeam provides a list of Veeam MP for VMware Metric Definitions and vCenter Events Definitions. Solution Veeam MP for...

Backups writing to C:\Windows\SysWOW64

Challenge In some cases, backup repositories automatically created by setup during upgraded from v5 may start writing data into C:\Windows\SysWOW64 if backup files used to reside in the root folder of the volume. Cause Root cause is still unknown but this KB will assist you in getting your jobs...

fault.RestrictedVersion.summary

Challenge Getting an error when running a SureBackup job: Unable to mount vPower NFS volume fault.RestrictedVersion.summary Failed to connect backup datastore to the ESX host "hostname".\n Unable to mount vPower NFS volume BACKUP1:/VeeamBackupBACKUP1. Backup1: fault.RestrictedVersion.summary\n...

SureBackup: Error: Mount with leaseId already activated

Challenge A SureBackup job displays the error: Error: Mount with leaseId 'xxx-xxx-xxx-xxx-xxx-xxx' already activated. Cause Surebackup will fail with this message if certain operations time out. Veeam Backup & Replication implements timeouts for most operations to protect against hangs. However,...

Unable to access file [unspecified filename] since it is locked

Challenge VMware holds a lock on the snapshot file while it is being consolidated. If there is an issue during this process, it is possible for further snapshots to be unable to consolidate, causing removal failures. You receive warnings that the snapshot removal process failed because '' is...

Changed block tracking cannot be enabled: virtual hardware version 7 or later required

Challenge The backup or replication job is processed slower than expected and gives the warning message "changed block tracking cannot be enabled: virtual hardware version 7 or later required." The job works without Changed Block Tracking, and the "changed block tracking cannot be enabled: virtua...

How to perform SureBackup recovery verification manually in Standard edition

Solution To start, use the Instant VM Recovery feature. For a boot up test, go through the Instant Recovery wizard and power on the VM, but do not select a checkbox to connect the VM to a network. Please note that since there is no network connectivity, some applications will not start since they...

How to Bypasss Load Balancing in Veeam Management Pack for Microsoft System Center

Challenge Load Balancing is automatically enabled between multiple collectors within one failover group. The issue is when you do not want collectors to failover or load balance between the two. Cause Load Balancing is a feature within Veeam Management Pack for Microsoft System Center and it is s...

How to Adjust Collector Heartbeat Timeout

Purpose This article provides information regarding the configuration of the Collector Heartbeat setting, which determines how long the collector can go between heartbeats before being considered unreachable. Solution Configuration of the CollectorHeartbeatTimeout value is documented in the Veeam...

Parameter is not valid. Failed to open Veeam Backup and Replication.

When opening the Veeam.Backup.Shell.exe, the following error occurs: Parameter is not valid...

During the export of log files the following error occurs: "Cannot access collector [collector_name]"

This articles provides suggestions to the error "Cannot access collector collectorname" that may happen during the export of log files...

Microsoft SQL Server Backup Policy Retention: Behavior and Recommendations

Challenge When a Microsoft SQL Server Backup Policy fails consistently for an extended period, restore points created by that policy may be removed if the Remove deleted items data after option is enabled in that policy. Cause This behavior occurs because the Remove deleted items data after optio...

"4BDN: Connected Salesforce Org already exists"

Issue Resolved in New Version The issue documented in this article was resolved in Veeam Backup for Salesforce 3.2. Challenge When attempting to add a Salesforce sandbox to an on-premise installation of Veeam Backup for Salesforce , the following error occurs: 4BDN: Connected Salesforce Org...

Restore to AWS EC2 Fails with: "ClientError: Unknown OS / Missing OS files" or "FirstBootFailure"

Challenge When restoring a VM to AWS EC2, one of the following errors occurs: StatusMessage: "CLIENTERROR : ClientError: Unknown OS / Missing OS files." Failed to import machine to Amazon EC2: CLIENTERROR : FirstBootFailure: This import request failed because the instance failed to boot and...

Guidelines for Mass Instant Recovery to Azure

Article Applicability This article contains information related to Veeam Backup & Replication build 13.0.1.180 and later, as performance for IR to Azure was significantly improved starting with this build. Challenge When attempting to perform mass recovery using Instant Recovery to Azure, the...

Overcoming TCP/IP Connection Limits with PgBouncer and PostgreSQL on Windows

Challenge When running PgBouncer and PostgreSQL on Windows, especially under high-load scenarios with frequent connect/disconnect cycles, you may encounter exhaustion of available TCP ports. This is due to many connections ending up in the TIMEWAIT state, preventing immediate reuse of those ports...

Unable to Login to Web UI After Enabling MFA

Article Applicability This article is regarding a issue that was discovered in Veeam Recovery Orchestrator build 7.2.1.286, which was available for download between 2025-07-08 and 2025-07-17. The issue documented in this article was discovered, confirmed, and patched and a new build was released...

Error: ".NET (`dotnet-`) must be added to the blacklist to prevent unattended upgrades that could impact the availability of the Linux proxy."

Challenge Attempting to add a Linux-base proxy in Veeam Backup for Microsoft 365 fails with the error: Error: .NET dotnet- must be added to the blacklist to prevent unattended upgrades that could impact the availability of the Linux proxy. Cause This error occurs when the proxy deployment process...

Veeam ONE Upgrade Paths

Purpose This article documents the upgrade path to be taken to get to the most recent version of Veeam ONE. Solution End of Support Upgrade Path If you are using a version of Veeam ONE VONE that has reached its End of Support EOS and cannot be directly upgraded to a supported version, you will ne...

Application Migration - Best Practices and Prerequisites

Purpose This article explains the prerequisites and best practices that must be considered for successful import during application migration. Solution Veeam Kasten for Kubernetes platform is built to support application migration across clusters, which is an extremely powerful feature that enabl...

Veeam Kasten for Kubernetes Performance Troubleshooting Guide

Purpose This article documents two of the most common performance tuning settings for Veeam Kasten for Kubernetes. Veeam Kasten for Kubernetes uses helm parameters, which can be tuned to adjust performance. The default settings should suit most environments. However, in complex environments,...

Support Statement - Exchange Online Basic Authentication Deprecation

Purpose This article provides information on actions that must be taken to ensure Veeam Backup for Microsoft 365 will continue to function after the Basic Authentication Deprecation in Exchange Online. Associated Error Messages The following errors may be shown in Veeam Backup for Microsoft 365...

Veeam's VSS Operations With SMB 3.0 Impacted by Windows June 14, 2022 Update

Challenge After installing the Windows June 14,2022 update KB5014702/KB5014746 on a Windows file server hosting SMB 3.0 shares, the follow Veeam Backup & Replication operations may be impacted: If those SMB 3.0 shares are added to Veeam Backup & Replication with the "Backup from Microsoft VSS...

Veeam API Integration Guide

Purpose This article documents the methods and capabilities of API integration with Veeam's products. API | Description | Reference | Example ---|---|---|--- Integration via PowerShell Veeam Backup & Replication | Full administrative, query, and operational control equivalent to the administrativ...

Release Information for Veeam Backup for Microsoft 365 5d Cumulative Patch KB4278

Requirements Please confirm you are running Veeam Backup for Microsoft 365 build 5.0.3.1033 or higher prior to installing this cumulative patch KB4278. You can check this under Help and Support About in Veeam Backup for Microsoft 365 console. After upgrading, your build version will change to...

Authorization for organizations with modern app-only authentication fails due to expired SSL certificate

Challenge An attempt to authenticate a tenant connection using Veeam Backup for Microsoft 365 REST API fails with an invalid/expired certificate error. Cause The SSL certificate for the login.microsoftonline.com site has expired in the local certificate store. Solution To update an expired...

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...

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 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...

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...

Veeam Backup for Microsoft 365 4c cumulative patch KB4099

This patch supersedes Veeam Backup for Microsoft 365 4c cumulative patch KB4083. Requirements Please confirm you are running Veeam Backup for Microsoft 365 version 4c builds 4.0.1.531, 4.0.1.545, 4.0.1.612 prior to installing this cumulative patch KB4099. You can check this under Help and Support...

How to Assign Permissions to Service Accounts Used by Veeam Backup for Google Cloud Platform

Challenge Veeam Backup for Google Cloud Platform requires a service account in each GCP project where data protection and disaster recovery tasks will be performed. The tasks include the following: Creating Snapshots Manually Performing Backup Perform Restore Adding Backup Repositories Create...

Veeam ONE creates or changes local accounts of the "Veeam_*" format at the Veeam ONE server machine

Challenge Veeam ONE creates or changes local accounts of the "Veeam" format on the Veeam ONE server machine. Cause This behavior is a part of the Veeam ONE design. Veeam ONE creates these temporary Windows accounts for login and authentication operations between Veeam ONE components and VMware...

Online-only files in OneDrive folder not backed up by Veeam Agent for Microsoft Windows

Challenge A restore point created by Veeam Agent for Microsoft Windows appears to be missing files from a user's OneDrive folder. Upon further investigation, it is determined that Files On-Demand was enabled, and the missing files were in an Online-only state at the time of backup. Cause As a...

Release Information for Veeam Backup for AWS v2 Patch 1

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 v2 Patch 1, your build version will be 2.0.1.622...

Network mapping does not work for Hyper-V replicas in Veeam Cloud Connect after renaming Hyper-V virtual switch

Article Applicability This article relates to a known issue documented in the Veeam Cloud Connect User Guide: After you subscribe a tenant to a Hyper-V hardware plan, you cannot rename the virtual switch in Microsoft Hyper-V infrastructure that is used by VM replicas. If you rename the virtual...