How to Configure WinHTTP Proxy for Veeam Components

Known Limitation A tenant's Veeam Backup & Replication server cannot access Veeam Cloud Connect infrastructure components through HTTP/HTTPS proxy servers. All cloud-targeted traffic from the tenant's Veeam Backup & Replication server will ignore proxy settings. Purpose This article documents how...

NFC connectivity troubleshooting steps

Challenge A job fails with an error related to NFC Network File Copy connectivity. For example: Error: NFC storage connection is unavailable. Failed to create NFC download stream. Failed to create NFC upload stream. Cause The cause of most NFC errors fall into 4 primary categories: DNS The proxy ...

SharePoint backup jobs fail with: The remote server returned an error: (429)

After upgrading to Veeam Backup for Microsoft 365 7, backup jobs may fail with this error due to SharePoint Online throttling policy...

Backup job fails with “The request is not supported. Failed to duplicate extent” message.

Challenge A backup job targetted at an ReFS based repository fails with " The request is not supported. Failed to duplicate extent" Examples: Agent: Failed to process method Transform.CompileFIB: The request is not supported. Failed to duplicate extent. Target file: vbk, Source file: vib,...

RPC function call failed. The RPC server is unavailable. w/ Application-Aware Processing

Challenge A Backup or Replication job utilizing Application-Aware Processing fails with the error: RPC error:The RPC server is unavailable. Code: 1722 Cause Possible causes include, organized from most common to rarest: The ports that Veeam Backup & Replication is attempting to use are blocked by...

Vulnerabilities Resolved in Veeam Backup & Replication 13.0.1.2067

All vulnerabilities documented in this article were resolved in Veeam Backup & Replication 13.0.1.2067. 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...

Release Information for Veeam ONE 13.0.1 RTM Patch 0

Update Applicability This "Patch 0" update for Veeam ONE 13.0.1 is strictly intended for deployments using the RTM release build 13.0.1.5860. If Veeam ONE 13.0.1 GA build 13.0.1.5924 is installed, this update can be ignored as it is not needed. All resolved issues listed in this article were foun...

How to Install Grafana with K10 Dashboard and Data Sources Pre-provisioned

Purpose Starting in Veeam Kasten for Kubernetes v7.5.0, Grafana will no longer be included by default. This in-depth technical guide will demonstrate the process of installing Grafana on Kubernetes and populating it with Kasten Data. It will allow you to quickly access pre-provisioned Kasten...

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:...

Guest processing fails for Nutanix AHV, Proxmox VE, Scale Computing HyperCore

Challenge When running backup or replication jobs for Windows virtual machines hosted on Nutanix AHV, Proxmox VE, or Scale Computing HyperCore with Veeam Backup & Replication 13.0.1 Patch 2, guest processing fails with one of the following errors: Failed to install guest processing components for...

Vulnerability Scanner Detection Related to CVE-2024-7264

Support Statement This Veeam KB article was created to address customers' concerns regarding the detection of the libcurl library by their security software on VMware Backup Proxies, where the VMware VDDK package is installed. Libcurl is a component of VMware VDDK Virtual Disk Development Kit,...

Public Folder Backup Hangs

Challenge An Exchange backup job that contains a public folder mailbox runs in an endless cycle, continuously getting changed items from one of the public folders. In the job logs, you can see multiple entries in the following format: Changed items: 0, deleted items: 0, read state changes: 100...

How to Manually Configure Nginx For Use by Veeam Backup for Salesforce

Purpose This article documents how to manually configure Nginx for use with Veeam Backup for Salesforce 3.1 and higher . Solution 1. Before making configuration changes, stop the Veeam Backup for Salesforce backend service: systemctl stop vbsf-backend.service Copy 2. Use Nginx template...

Backup Failure: "There are currently x usable fault domains. The operation requires y more usable fault domains."

Challenge A Veeam Backup & Replication job protecting a VM stored on a vSAN fails with the error: Error: There are currently x usable fault domains. The operation requires y more usable fault domains. Cause This error is relayed from the snapshot operation failure message within the vSphere...

Appliance Installation Stuck on "Configuring addons"

Challenge During the deployment of a Veeam Backup & Replication v13 appliance Veeam Software Appliance, Veeam Infrastructure Appliance, or Veeam Hardened Repository, the installer stalls on the "Configuring addons" step. When this occurs, switching to tty1 Ctrl+Alt+F1, then using Alt+Tab to switc...

Build Numbers and Versions of Veeam Plug-in for Proxmox VE

This KB article lists all versions of the Veeam Plug-in for Proxmox VE and their respective worker build numbers. Version | Plug-in Build | Worker Build | Release Date ---|---|---|--- Veeam Plug-in for Proxmox VE 4 Releases Veeam Plug-in for Proxmox VE 4.0 Included with Veeam Backup & Replication...

"There is no FIB [summary.xml]" error with Veeam Cloud Connect v12.2

Updated Hotfix Release -- September 30, 2024 On 2024-09-30, a new revision to the hotfix package listed in this article was released. This updated hotfix file coincides with a repackaged release of the Veeam Backup & Replication 12.2 ISO dated 20240926, which integrates the new hotfix package...

How to Collect Logs for Veeam Plug-in for Oracle RMAN

Purpose This article documents how to collect the diagnostic information needed for a support case involving the Veeam Plug-in for Oracle RMAN. Solution 1. Collect diagnostic information as documented in the five sections below. 2. Combine the data into a single .zip file. 3. Attach the zip file ...

The "Index was outside the bounds of the array" error while opening nworks UI

When the error "Index was outside the bounds of the array" occurs when opening nworks UI, this article provides the steps to address the corrupted XML file...

Upgrading the PostgreSQL Database Engine Software Used by Veeam Backup for Microsoft 365

Support Scope This article is provided as a courtesy to give customers a high-level explanation of how to upgrade the underlying PostgreSQL database engine used to host the Veeam Backup for Microsoft 365 configuration database. Per the Veeam Customer Support Policy, section 10: Support for Veeam...

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 ...

Build Numbers and Versions of Veeam ONE

This KB article lists all versions of Veeam ONE and their respective build numbers. For more information on downloading the latest version of Veeam ONE, visit: My Account Portal - Product Downloads Latest Downloads Page Veeam ONE -- What's New PDF Version | Build Number | Release Date | Release...

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...

Secure channel communications stop working after disabling TLS 1.0/1.1

After disabling TLS 1.0/1.1, Veeam functionality which utilizes the SCHANNEL security provider, such as license auto-update, license usage reporting and Veeam explorers with remote mounts stop working...

Cannot request cryptocontainer. Win32 error:Keyset as registered is invalid

Challenge A Veeam Agent for Microsoft Windows backup job completes with the following warnings: Cannot request cryptocontainer. Win32 error:Keyset as registered is invalid. and SQL VSS Writer is missing: databases will be backed up in crash-consistent state and transaction log processing will be...

How to use Azure Database for PostgreSQL with Veeam Backup for Microsoft 365

Purpose This article documents how to utilize Azure Database for PostgreSQL to host the Veeam Backup for Microsoft 365 v8 or higher configuration database. Solution After deploying Azure Database for PostgreSQL, additional steps must be performed to ensure it can be utilized by Veeam Backup for...

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...

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...

Backup Copy or Replication job using WAN accelerators fails with "Source WAN accelerator error: Failed to decompress LZ4 block"

Challenge A Backup Copy or Replication job that uses WAN accelerator fails with any of the following errors: Error: Source WAN accelerator error: Failed to decompress LZ4 block: Bad crc Error: Source WAN accelerator error: Failed to decompress LZ4 block: Incorrect decompression result or length...

How to Re-create the configuration database for Veeam Agent for Microsoft Windows

Resetting the configuration database will reset all Veeam Agent for Microsoft Windows settings, removing existing job settings and related job history. Restore points created before the reset will not be removed and will remain recoverable; however, as their job will have been removed, they will...

WAN Accelerator Fails to Install

Challenge When creating a new WAN Accelerator or reconfiguring an existing WAN Accelerator, the installation of the WAN Accelerator package fails with the error: Error Installing package WAN Accelerator Error: Error 1920.Service Veeam WAN Accelerator Service VeeamWANSvc failed to start. Verify...

How to Update Location Profile Endpoint Details and Preserve Access to an Existing Kopia Storage Repository

Purpose This article documents the correct procedure to update the Endpoint details in the Location Profile for an existing Kopia storage repository in S3-compatible stores and ensure the existing associated repositories remain accessible. Customers may wish to update the Endpoint details e.g.,...

After Upgrade to Veeam Backup & Replication 12.1, Backup of Linux VM Fails With: "Failed to check fingerprint"

Challenge After upgrading to Veeam Backup & Replication 12.1, Backup jobs for Linux VMs that operated successfully before the upgrade now fail with: Unable to connect to guest OS for guess process. Failed to check fingerprint. Cause During the upgrade to Veeam Backup & Replication 12.1, the forma...

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...

Veeam Backup & Replication 9.0 Day 0 Update

Challenge This update is provided to enable upgrading existing installations of Veeam Backup & Replication 9.0 partner preview build 9.0.0.773 to generally available version of Veeam Backup & Replication 9.0 build 9.0.0.902. This update addresses a number of issues reported by our partners on the...

Veeam ONE Web Client Page Fails to Load After Updating .NET Runtime Components

Veeam ONE 12.2 and 12.3 .NET Version Requirements Veeam ONE build 12.2 build 12.2.0.4093 and 12.3 build 12.3.0.4670 require and support only .NET 8.0. Note: All three component versions must match. ASP.NET Core Runtime 8.0.x Microsoft ASP.NET Core 8.0.x - Shared Framework x64 .NET Desktop Runtime...

Helper Appliance Resource Requirements

Purpose This article documents the specific EC2 Instance Type / Azure VM Size that will be used by Veeam Backup & Replication based on the Helper Appliance size selected when adding Amazon S3 or Azure Object Storage. Solution Helper Appliance Sizes The table below documents the actual EC2 Instanc...

How to Back Up a Windows Failover Cluster with Veeam Agent for Microsoft Windows

Solution Information regarding Failover Cluster Support is available in the Veeam Agent Management Guide: Failover Cluster Support How to Protect Failover Clusters If this KB article did not resolve your issue or you need further assistance with Veeam software, please create a Veeam Support Case...

"Failed to connect to the database." Updater Configuration Check

Challenge When updating Veeam Backup & Replication the Configuration Check fails with either: Failed to connect to PostgreSQL server localhost:5432. An existing connection was forcibly closed by the remote host SSPI authentication failed for user Cause The account being used to run the update...

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...

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...

CVE-2025-23120

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...

Release Information for Veeam Backup & Replication 12 Day 0 Update

Update Applicability This "Day 0" update for Veeam Backup & Replication 12 is strictly intended for servers using the RTM release build 12.0.0.14 02. If Veeam Backup & Replication 12 GA build 12.0.0.14 20 is installed, this update can be ignored as it is not needed. All resolved issues listed in...

Release Notes for Veeam Backup & Replication 9.5 Update 4b

More Recent Version Available Please find the latest version of Veeam Backup & Replication here: Veeam Downloads - Latest Version Challenge Release Notes for Veeam Backup & Replication 9.5 Update 4b Cause Please confirm that you are running version 9.0 Update 2 build 9.0.0.1715 or later prior to...

Veeam ONE Database Calculator for Virtual Infrastructure and Veeam Backup & Replication 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 one year of historical...

An error message "Collecting thread has failed to initialize (Time difference between Veeam Monitor server and ESX host is too large. Make sure that NTP is enabled on ESX host and try again.) and will be stopped" in Veeam Monitor

Challenge The error "Connection problems" appears with vCenter server or ESXi host in Veeam ONE Monitor client infrastructure view. vCenter server or the ESXi host becomes grayed out: No data goes to the Veeam ONE Monitor client and into the Veeam ONE database. vCenter server or ESXi might be...

How to Apply Custom Settings in Veeam Backup for Microsoft 365 Using Set-VBOConfigurationParameter

Purpose This article explains how to use the Set-VBOConfigurationParameter cmdlet to apply a custom configuration setting within a Veeam Backup for Microsoft 365 deployment. Solution How the Scripts in This Article Are Used Every script in this article begins with the same three variables, which...

How-to Restore Lost Access to Cache Database After Using Custom SSL Certificate

Article Applicability This article is relevant only if the Veeam ONE deployment uses a custom SSL certificate, and not the one generated by the Veeam ONE installer. The error shown in the challenge section can also occur if the Veeam ONE Caching Service cannot access the PostgreSQL instance that...

Using Veeam Agents with Xen Orchestra (Vates XCP-NG and XenServer)

Purpose This article documents how to use Veeam Agent for Microsoft Windows and Veeam Agent for Linux , managed by Veeam Backup & Replication, to protect virtual machines in XenServer and XCP-NG environments that are managed by Xen Orchestra. While these hypervisors are not directly supported for...

Vulnerability Scanner Detection Related to CVE-2023-38545

Veeam Backup & Replication 12.1.2 Release - Article Update With the release of Veeam Backup & Replication 12.1.2, the VDDK libraries, which contained the libcurl library, are no longer included with the Veeam Transport package. After upgrading, the Veeam Transport Package on remote components wil...