Backups of VMs with enabled CBRC option fails when Linux backup proxies are used

Article Applicability This article discusses a limitation specific to Veeam Backup & Replication 10.x. When Linux-based VMware Backup Proxy was introduced in Veeam Backup & Replication 10, it could only use the Virtual Appliance HOTADD transport mode. Starting with Veeam Backup & Replication 11, ...

How to Clean up the Credentials Manager in Veeam Backup & Replication

Challenge Over time, duplicate or outdated credentials may be saved in the Credentials Manager of Veeam Backup & Replication. This article documents a process for reviewing and cleaning up the Credentials Manager. Solution No changes to the Credentials Manager account list are saved untilOK is...

Veeam Backup for Microsoft 365 4c cumulative patch KB3222

This patch has been superseded by Veeam Backup for Microsoft 365 4c cumulative patch KB4083. Requirements Please confirm you are running Veeam Backup for Microsoft 365 build 4.0.1.531 prior to installing this cumulative patch KB3222. You can check this under Help About in Veeam Backup for Microso...

Veeam ONE XML External Entity Processing vulnerabilities

Challenge XML External Entity Processing vulnerabilities in Veeam ONE Reporter make possible to read arbitrary files without authentication. Severity : critical CVSS v3 score : 7.5 Cause Veeam ONE Reporter uses XML files for importing and exporting report templates. A remote attacker may send...

How to work with Amazon EBS encryption using Veeam Backup for AWS

Challenge You want to backup or restore instances with encrypted volumes. You receive one of the following related errors while working with encrypted volumes: Encrypted snapshots with EBS default key cannot be shared The default encryption key in the region of your service account is aws/ebs...

Veeam Service Provider Console v4 Patch 1 (build 4911)

Challenge Veeam Service Provider Console v4 Patch 1. This patch is superseded by the Patch 2 Cause Please confirm you are running version 4.0.0.4877 before installing this Patch 1. You can check this under Windows Programs and features. After upgrading, your build will be version 4.0.0.4911. As a...

Cloned Veeam Backup & Replication Servers in Veeam Service Provider Console

Challenge Veeam Backup & Replication servers with the same installation IDs cannot be used for automatic product usage reporting and integration with the VCSP Pulse platform. Solution Automatic Reboot The command to generate a new Installation ID will cause the Veeam Backup Service to restart,...

Error "Failed to establish connection to Amazon S3 endpoint" or "Azure Cloud connection has returned an untrusted certificate."

Challenge When attempting to add an Object Storage Repository or use an existing Object Storage Repository the following errors occur: Connection to Amazon S3 object storage fails with the following error: Failed to load Amazon S3 Compatible configuration: Failed to establish connection to Amazon...

"Proxy offline time exceeded” error after updating Veeam Backup for Microsoft 365 to version 4c

Challenge After updating Veeam Backup for Microsoft 365 4c build 4.0.1.531 backups start to fail with the "Proxy offline time exceeded". Cause At the end of every month, Veeam Backup for Microsoft 365 collects licensing information. If your Veeam Backup for Microsoft 365 server is installed on a...

How to Configure Endpoints for Veeam Backup for AWS

You want to launch workers in the subnet with disabled auto-assignment of the Public IPv4 addresses...

How to Create Custom Worker Instance IAM Role

The Worker IAM role is used to launch worker instances for backup and restore using S3 repository...

Deploying Veeam Backup for Microsoft 365 Backup Proxy Server in AWS

Challenge You need to configure an Amazon EC2 instance to act as a Backup Proxy for Veeam Backup for Microsoft 365 in AWS. For example, this may be required for the following reasons: The current proxy/deployment has or will reach configuration maximums. Growth within the Organizations. You need ...

Release Information for Veeam Backup for AWS v2

Requirements IMPORTANT You cannot update Veeam Backup for AWS operating in the Paid edition to version 2.0 from the Veeam Backup for AWS Web UI. To update the product, you must install Veeam Backup for AWS version 2.0 from AWS Marketplace on a new EC2 instance, and then migrate Veeam Backup for A...

Veeam Backup & Replication — Cannot find any supported licenses for current product version.

Challenge When attempting to install a license into Veeam Backup & Replication, the following error occurs: Cannot find any supported licenses for current product version. Cause This error most often occurs when the license file being installed is for an older version of Veeam Backup & Replicatio...

Veeam Cloud Connect jobs fail with "Authentication failed because the remote party has closed the transport stream" error

Challenge After upgrade of Veeam Backup & Replication on the Veeam Cloud Connect service provider's backup server to version 10, tenant jobs may start failing with the following error: "Authentication failed because the remote party has closed the transport stream ". At the same time, the...

Veeam Backup for Microsoft 365 4c cumulative patch KB3194

IMPORTANT This patch is intended only for Veeam Backup for Microsoft 365 version 4c build 4.0.1.519. Requirements Please confirm you are running Veeam Backup for Microsoft 365 build 4.0.1.519 prior to installing this cumulative patch KB3194. You can check this under Help About in Veeam Backup for...

Advanced transport modes (HotAdd and SAN) fail over to NBD mode

Challenge Advanced transport modes Virtual Appliance HotAdd or Direct Storage access may not work, failing over to the NBD transport mode instead. If you are seeing error "Cannot use advanced transport modes, failing over to NBD " you should check the HotAdd attacher agent log default location -...

Veeam Backup for Microsoft 365 Modern App-Only Authentication Limitations

Information Veeam Backup for Microsoft 365 v8 and higher Due to Microsoft's deprecation of Basic Authentication, the only option available when adding a new Microsoft 365 organization to Veeam Backup for Microsoft 365 v8 is Modern App-Only Authentication. Veeam Backup for Microsoft 365 v7 and v7a...

Release information for Veeam Backup for Microsoft 365 4c

NOTE A cumulative patch is now available, click here for more information Veeam Backup for Microsoft 365 4c cumulative patch KB4099. IMPORTANT The GA build of Veeam Backup for Microsoft 365 version 4c build 4.0.1.519 was recalled due to a backup sync issue identified by Veeam quality assurance. I...

Release Information for Veeam Agent for Oracle Solaris 2.0

Requirements Upgrade from v1 is not supported, clean installation is required. Upgrade from Veeam Agent for Solaris 2.0 RTM build 2.0.0.123 is possible. Please confirm that you are running version 2.0.0.123 or later prior to upgrading. You can check this using veeamconfig --version in Oracle...

Veeam Guest Catalog Service does not start after upgrade

Challenge After a consecutive upgrade of Veeam Backup & Replication and Enterprise Manager to a newer version, VeeamCatalogSvc fails to start if the EM database is located on a remote server. Cause The account that is used to start VeeamCatalogSVC might not have access to the Veeam Enterprise...

Unable to add Nutanix AHV cluster due to empty credentials list

Challenge When trying to add a new Nutanix AHV cluster to the Veeam Backup & Replication infrastructure, the operation cannot be finished due to an empty list of credentials. Newly added credentials are not displayed in the Credentials list, and the wizard does not allow adding a new cluster...

Veeam Backup & Replication 10 Cumulative Patch 2

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 the GA build of version 10 build 10.0.0.4461 or 10.0.0.4461 P1 prior to installing this update. You can check this und...

How to Remove Missing Restore Points From Veeam Cloud Connect Backups

Purpose This article documents how to handle a situation in which the tenant of a Cloud Provider needs to forget missing restore points from a backup chain stored in a Cloud Repository. By design, the Forget and Remove operations are not available for restore points in a Cloud Repository. A resto...

How to keep OST files in Veeam Agent backup

Challenge When you create a backup using Veeam Agent for Microsoft Windows , Microsoft Volume Shadow Copy Service VSS excludes certain files like deleted, temporary, paging or OST files from the backup scope. Cause Veeam Agent for Microsoft Windows uses Microsoft VSS for backup operations...

How to configure Veeam Agent with Work or School Account

Article Applicability This article concerns a feature only available in Veeam Agent for Microsoft Windows 5 and older. The option to backup to OneDrive was deprecated in Veeam Agent for Microsoft Windows 6. As an alternative, Veeam Agent for Microsoft Windows 6 has introduced an Object Storage...

Failed to call RPC function: Error code: 0x80131500

Challenge Backup of Remote Desktop Server VMs with Application-Aware Processing may fail with an Unknown error, error code 0x80131500. You will see error messages similar to: "Failed to call RPC function 'Vss.GetSqlInfoForLastSnapshot2': Error code: 0x80131500. Failed to invoke func...

Veeam Management Pack 8.0 Update 6 cumulative patch for VMware vSphere 7.0 monitoring

Challenge Veeam Management Pack 8.0 Update 6 is not compatible with VMware vSphere 7.0 and later. When you try to connect to vCenter Servers running VMware vSphere 7.0, you get the following error: "Cannot connect to "YourVcenterName" on port 443. Unsupported API version." Cause The issue is...

Google Cloud VMware Engine (GCVE) Support Statement

Support Statement Google Cloud VMware Engine GCVE is a fully compliant and certified full-stack cloud infrastructure sold and supported by Google. You can natively deploy VMware vSphere-based workloads in a dedicated Software-Defined Data Center SDDC on Google Cloud and utilize the same...

How to configure antivirus configuration XML file for secure restore

Challenge The article provides information on adding additional antivirus options to Veeam Backup & Replication Secure Restore. NOTE : When adding an antivirus that is not already predefined, you may need to contact the antivirus vendor for assistance to gather the required attributes and exit...

How to Adjust the Veeam Service Provider Console Web UI Session Timeout

Purpose This article documents how to modify the Veeam Service Provider Console configuration to adjust the Web UI timeout. The default Web UI timeout is 1 hour, and tokens are good for up to 48 hours. Solution Tip: Use the copy button in the text blocks below to simplify specifying which file to...

Veeam Recovery Media Shows Command Line Only

Challenge When booting from the Veeam Recovery Media, the Veeam Agent machine displays the command line interface instead of the Veeam Recovery Media screen. Cause Comodo Firewall , Comodo Antivirus Software, or Central Management Software for Comodo may block some of the Veeam Agent processes,...

Changed block tracking cannot be enabled: one or more snapshots are present

Challenge After upgrade to Veeam Backup & Replication 10, the Backup of a VM using Cisco HyperFlex Snapshots completes with the warning "Changed block tracking cannot be enabled: one or more snapshots are present" if a Sentinel snapshot is already present. The described issue with Cisco HyperFlex...

How to Use VSSTrace to Collect VSS Diagnostic Logging

Challenge This article explains how to collect additional VSS diagnostic data with the VSSTrace tool, a Microsoft Windows Software Development Kit SDK component. Cause Veeam products use Microsoft Volume Shadow Copy Service VSS for various tasks. Sometimes it is necessary to go through the...

Veeam Backup for Microsoft Azure Recovery/Migration Procedure

This document explains how to recover or migrate Veeam Backup for Microsoft Azure data to new instance.A Veeam Backup for Microsoft Azure instance may fail or get corrupt and requires the data volume...

How to Reset Password in Veeam Plug-In for Microsoft Azure Appliance

Purpose This article documents methods to reset the password of the Veeam Plug-In for Microsoft Azure service account. Solution Reset Password via The Microsoft Azure portal 1. Open the Microsoft Azure portal. 2. Log in using your Microsoft Azure credentials. 3. Select the virtual machine with...

Configuring Multiple Azure Active Directories

Challenge There are different ways to back up VMs from different tenants/subscriptions in Veeam Backup for Microsoft Azure. Multiple Microsoft Azure accounts may be added to Veeam Backup for Microsoft Azure. To handle VMs belonging to different accounts, add them as Azure accounts in Veeam Backup...

Required Roles and Permissions for Veeam Backup for Microsoft Azure

You want to create manual permissions for your Azure account service account for Veeam Backup for Microsoft Azure or for a repository account. The Azure or service account is responsible for: Synchr...

How to Migrate Veeam Agent Backup Files to Cloud Connect Repository

Purpose This article documents the available methods to migrate backup data from Standalone deployments of Veeam Agent for Microsoft Windows or Veeam Agent for Linux from a non-Cloud Connect Repository to a Cloud Connect repository, allowing the original backup job to continue utilizing that back...

How to Limit Parallel Disk Processing in Veeam Agent for Microsoft Windows

Purpose This article documents how to disable or limit parallel disk processing in Veeam Agent for Microsoft Windows. Solution The following registry values can used to control parallel disk processing on the machine where Veeam Agent for Microsoft Windows is installed: To disable parallel disk...

MBR disk restore to UEFI system fails with "OS disk in backup uses MBR disk" warning

Challenge When attempting to restore a Windows machine using Bare Metal Recovery, the restore displays the warning: OS disk in backup uses MBR disk. This may cause boot issues on UEFI systems Cause The Bare Metal Recovery restore has detected that the system within the selected restore point was...

Cannot edit configuration of VMware VM via ESXi after Instant Recovery from Veeam Agent backup

Challenge When you complete Instant VM Recovery from the Veeam Agent backup, then try to edit the VM configuration via ESXi, the following error occurs: "Enter a disk size which is larger than its original capacity." Then you try to edit the decimal virtual disk size via ESXi, and another error...

How to Create Secure IAM Policy for Connection to S3 Object Storage

KB ID: | 3151 ---|--- Product: | Veeam Backup & Replication Published: | 2020-04-21 Last Modified: | 2026-08-10 Get weekly article updates SUBSCRIBE By subscribing, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Notice. Cheers for trusti...

How to enable Fast Clone functionality with Veeam Availability for Nutanix Mine

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 Fast Clone is the Veeam Backup &...

"Value cannot be null. Parameter name: dnsName” Error when performing Infrastructure scans in Veeam Backup for AWS

For more information about Veeam Backup for AWS considerations and limitations, please review: Veeam Backup for AWS User Guide Planning and Preparation Considerations and Limitations Challenge When performing an infrastructure scan in Veeam Backup for AWS, you receive the following error: " Faile...

Veeam Backup & Replication support for HPE Cloud Volumes Backup

Veeam Backup & Replication v10 provides official support for HPE Cloud Volumes Backup. HPE Cloud Volumes Backup is a cloud-based backup service from HPE that emulates on-premises StoreOnce Catalyst Stores and can be used by Veeam Backup & Replication as a backup target that will automatically pro...

Veeam ONE Remote Code Execution Vulnerabilities

Challenge Vulnerabilities in Veeam ONE Agent components residing on Veeam ONE and Veeam Backup & Replication servers allow executing malicious code remotely without authentication. This may lead to gaining control over the target system. Severity : critical CVSS v3 score : 9.8 Cause Veeam ONE Age...

Restore a deleted vCenter Server Appliance (VCSA) with High Availability (HA) enabled

Challenge You need to restore a vCenter Server Appliance VCSA with the original name and to the original location. Before the VCSA got corrupted or was deleted, High Availability HA was enabled in the VMware cluster. If HA remains active at the ESXi host level during the restore process, HA can...

Preferred Network Rule for Hyper-V Host Not Using IP Specified

Challenge Backup network traffic does not use the NICs associated with IPs configured within the preferred network rules for a Microsoft Hyper-V Host. Cause This can occur because, by default, Veeam Backup & Replication stores only the IP addresses for Hyper-V hosts that DNS provides. Solution To...

Veeam Backup & Replication 10 Cumulative Patch 1

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 version 10 build 10.0.0.4461 prior to installing this update. You can check this under Help | About in the Veeam Backu...