Veeam ONE Report Error "Invalid query string"

Note to Veeam Backup for Microsoft 365 Customers If you were directed here by the output of the Test-VBORepository cmdlet, please visit https://www.veeam.com/kb4704. The typo in the cmdlet output will be corrected in a future release. Challenge When previewing a report in Veeam ONE Web Client, th...

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...

Veeam Backup & Replication 13: Changes to Supported Linux Platforms

Article Applicability This article lists the specific Linux distributions and versions that will no longer be supported starting with Veeam Backup & Replication and Veeam Agent for Linux version 13. These lists are intended for customers currently running Veeam Backup & Replication 12.3 and Veeam...

How to Review Password Requirements of Veeam Software Appliance

Purpose This article documents how to review the specific password requirements for a Veeam Software Appliance. Solution The Veeam Software Appliance adopts the DISA STIG password requirement standard. These password requirements may change between releases and as part of OS updates. View Current...

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...

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:...

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...

How to Exclude Microsoft SQL Databases from Application-Aware Processing

Purpose This article documents how to exclude a Microsoft SQL Database from being processed by Application-Aware Processing. Limitations and Considerations Excluding a database from Application-Aware Processing only means it will not be processed as part of the VSS snapshot operation, and the...

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...

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...

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 ...

OAuth interaction_required Error in Veeam Backup & Replication Console After Veeam Software Appliance Update

Challenge The Veeam Backup & Replication Console displays the following error when attempting to connect to a Veeam Software Appliance that was recently updated: Unable to perform OAuth authorization: interactionrequired. The Veeam Backup & Replication Console will report that it successfully...

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...

Veeam PowerShell cmdlets to help Automate Backup Copy Backup Format Upgrade

This article provides information about using Veeam PowerShell to automate the procedure of upgrading Legacy Periodic Backup Copy jobs to use the new True Per-Machine backup format. These PowerShell commands can be used to simplify the Backup Chain Format upgrade process...

Failed to prepare guest for SQL Server transaction log backup Details: Job owns SQL Server transaction logs backup

Challenge Microsoft SQL Server Log Backup job displays the following warning: Failed to prepare guest for SQL Server transaction log backup Details: Job owns SQL Server transaction logs backup This issue can also occur for Oracle Archived Log Backup, and will display the following warning: Cannot...

The HTTP request was forbidden with client authentication scheme

July 2, 2026 -- Issue Recurrence July 2, 2026 | Veeam Customer Technical Support began observing an increase in cases reporting that jobs were failing with the same error documented in this article. July 3, 2026 | Microsoft engineering has implemented backend changes as part of the ongoing...

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...

Zlib decompression error: [-3] | Failed to decompress LZ4 block

Challenge A Backup Job or Restore fails with either of the following errors: Zlib decompression error: -3. or Failed to decompress LZ4 block: Cause When the software reads from a an existing restore point it performs error detection using Cyclic Redundancy Checks CRC to validate the data. The err...

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...

SQL Plugin Job Fails with Error: "Mandatory arguments not set" or "Starting retention policy task"

Challenge After the upgrade or installation of the patch for Veeam Backup & Replication 12.3.2.4165, existing Veeam Plug-In for Microsoft SQL jobs fail with the following error: Failed to backup database. Error: Mandatory arguments not set Session failed: Mandatory arguments not set. Starting...

How to Collect Logs for Veeam Backup Enterprise Manager

Purpose This article documents how to collect logs from Veeam Backup Enterprise Manager. Solution Automated Log Collection 1. Connect to the Enterprise Manager Website 2. Click Configuration in the top-right corner. 3. In the Configuration section, on the left side, click About. 4. At the bottom ...

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...

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...

CVE-2022-26504

Challenge Vulnerability CVE-2022-26504 in Veeam Backup & Replication component used for Microsoft System Center Virtual Machine Manager SCVMM integration allows domain users to execute malicious code remotely. This may lead to gaining control over the target system. Severity : High CVSS v3 score ...

How to Change Veeam Service Provider Console Website Port

Purpose This article documents how to change the port used by the Veeam Service Provider Console Portal. Solution Note: The Veeam Service Provider Console software was previously known as Veeam Availability Console. The old name is still used in some locations for backward compatibility, in...

Vulnerabilities Resolved in Veeam Backup & Replication 12.3.2

All vulnerabilities documented in this article were resolved in Veeam Backup & Replication 12.3.2. Veeam Product Latest Version Download Page Veeam Software Security Commitment Veeam® is committed to ensuring its products protect customers from potential risks. As part of that commitment, we...

Release Information for IBM FlashSystem Plug-In for Veeam Backup & Replication

This plug-in leverages the Veeam Universal Storage API, which enables storage OEMs to allow Veeam Backup & Replication integration to the arrays for backup and replication jobs. Requirements Before installing IBM FlashSystem Plug-In v2.4.2, ensure that you are running at least Veeam Backup &...

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...

CVE-2022-26503

Challenge Vulnerability CVE-2022-26503 in Veeam Agent for Microsoft Windows allows local privilege escalation. An attacker who successfully exploited this vulnerability could run arbitrary code with LOCAL SYSTEM privileges. Severity : High CVSS v3 score : 7.8 Cause Veeam Agent for Microsoft Windo...

Troubleshooting Guest Processing Issues | "Test Now" or "Verify network connectivity and credentials"

Article Applicability This article's primary focus is on traditional credentials-based authentication. For environments using a Group Managed Service Account gMSA, please review the User Guide first to ensure you are familiar with all the Requirements and Limitations of gMSA usage. Challenge Skip...

Veeam ONE: SQL Express Maximum Database Size Limitation

Challenge When the Veeam ONE database is located in a SQL Express instance, if the database reaches the maximum allowed size, Veeam ONE will not be able to continue data collection, thus affecting data accuracy and alarm generation. Cause If you choose to host the Veeam ONE database on Microsoft...

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...

OneDrive / SharePoint Backup Fails with "Error: Invalid MIME content-length header encountered on read."

Challenge A backup job for OneDrive or SharePoint items processed by Veeam Backup for Microsoft 365 fails when attempting to download certain item versions, displaying the following error: Invalid MIME content-length header encountered on read Cause The issue is related to the download process us...

Unable to Interact with Some Hypervisors and Cloud Platforms

Veeam Backup & Replication 13.0.1 Upgrade Warning During the upgrade to Veeam Backup & Replication 13.0.1 or higher, the following warning may be displayed: Incompatible backup server certificate The certificate does not support child certificates creation and must be replaced for virtualization...

"Established connection failed because connected host has failed to respond :10005"

Challenge A Windows Agent Backup or Windows Agent Policy type job within Veeam Backup & Replication fails with either of the following errors. A Veeam Agent Backup operating in Managed by backup server fails with the error: Error: Managed session has failed: A connection attempt failed because th...

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...

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...

0x80042316 or Error: VSSControl: -2147212522

Challenge A backup job using Application-Aware Processing fails with the errors: Failed to create snapshot. Error code -2147212522. 'Backup job failed. Error VSS error: VSSESNAPSHOTSETINPROGRESS. Code:0x80042316 Solution Error code: 0x80042316 and Error code -2147212522 both represent the VSS...

File is locked by running session

Challenge A job or task within Veeam Backup & Replication displays the following message: File is locked by running session jobname Cause When tasks run in Veeam Backup & Replication, the files accessed by those tasks are tracked within the configuration database to prevent collision. As tasks ar...

Upgrading Veeam Agent for Microsoft Windows from 5.0.x to 6.1.x fails with: Failed to migrate data to new database.

Challenge When attempting to upgrade Veeam Agent for Microsoft Windows from version 5.0.x to version 6.1.x, after selecting the option to "Preserve all setting from your previous product installation," the migration of the configuration database fails with: Failed to migrate data to new database:...

Archiving Job to Azure Archive Storage fails: "This request is not authorized to perform this operation."

Challenge Archiving Job to Microsoft Azure Archive Storage fails with the following error: This request is not authorized to perform this operation. Agent failed to process method LongTerm.GetRepositoryKey Copy Cause This issue may be directly related to permissions but can also occur due to...

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 ...

Job reports warning "Failed to truncate transaction logs for SQL instances: Possible reasons: lack of permissions, or transaction log corruption."

Challenge Backup Job with Application-Aware Processing enabled and configured to "process transaction logs" displays the warning: Failed to truncate Microsoft SQL Server transaction logs. Details: Failed to process 'TruncateSQLLog' command. Failed to truncate SQL server transaction logs for...

Veeam Management Pack v6 Required Ports and Permissions

Solution Required Permissions Connection to Virtual Servers VI Object | Required Permissions ---|--- vCenter, ESXi Host | Read-Only1 Host.CIM.CIM Interaction2 Datastore.Browse Datastore3 Datastore.Configure Datastore3 Datastore Cluster.Browse Datastore Cluster3 1 Minimum required permission over...

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 3 Releases Veeam Plug-in for Proxmox VE 3.2 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 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...

How to assign ProPartner Portal Roles

Purpose This article documents how to assign internal VCSP employees a Pulse user role to allow them access to the VCSP Pulse portal within the Veeam ProPartner setup. Note: Roles can only be assigned by the employee of the ProPartner holding the ProPartner manager role. Solution To adjust the...

Inventory of Non-initialized LTO-9 Tape Fails for HPE MSL2024 and 1/8 G2 Autoloader Tape Libraries

Challenge If Veeam Backup & Replication attempts to load an LTO-9 tape that has not been initialized or has an unknown status in the library, the library will report the error Source Not Ready error SCSI Check Condition 05/4481. Error MTSCSI PASS THROUGH DIRECT ended with Scsi Error Fixed format,...

How to Customize the VSPC Welcome Email

Purpose This article documents how to customize the Welcome emails sent out by Veeam Service Provider Console. Solution Requirements and Considerations for Modifying the Welcome Email Template File To modify the Welcome email template file effectively, proficiency in XML, HTML, and XSLT is...