Option to Install Veeam ONE Agent is Unavailable (Greyed Out)

Challenge When attempting to install the Veeam ONE Agent on a Veeam Backup Server, theInstall agent option is unavailable and greyed out. Cause There are several possible causes for this issue: The Veeam ONE Agent is already installed on the Veeam Backup & Replication Server. The Veeam ONE Server...

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 ...

Unable to Mount VPower NFS Specified Key Name or Identifier Already Exists

Challenge During a Veeam vPower NFS-based operation SureBackup, Instant Recovery, Instant Disk Recovery, or Other-OS FLR, the following errors may occur: Unable to mount vPower NFS volume :/VeeamBackup. Fault "AlreadyExistsFault", Error The specified key, name, or identifier already exists. Unabl...

Windows 11 24H2/25H2 | Server 2025 - Recovery Media Restore Fails with: The Local Security Authority cannot be contacted

Issue Resolved in September 8 2026 Windows Updates The underlying issue documented in this article was resolved by Microsoft in the September 8 2026 security updates for Windows 11 KB5124008 and Windows Server 2025 KB5122871. After applying the update, the Veeam Recovery Media must be recreated...

How to Manually Change the VSA Host Management Certificate

Purpose This article documents the procedure for updating the Host Management Certificate used by the VSA Veeam Software Appliance. Note: The ability to update the certificate via the VSA Host Management Console may be added in a future version; however, as of version 13.0, it must be completed b...

Log4j Vulnerability (CVE-2021-44228)

General Vulnerability Details CVE-2021-44228 https://nvd.nist.gov/vuln/detail/CVE-2021-44228 https://vulners.com/cve/CVE-2021-44228 Impact on Veeam Software Veeam products are not affected by this vulnerability. Apache Log4j is not in use by any Veeam products. More Information Veeam Blog: Log4j...

How to Add RHEL 8/9 Using NIST 800-171 or DISA STIG Security Profile to Veeam Backup & Replication

Product Enhancement Starting in Veeam Backup & Replication 12.1.2, both DISA STIG and NIST profiles are now natively supported without any need to perform the manual tasks documented in this article. Purpose This article documents the additional procedures required to add a Linux machine to Veeam...

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...

Meltdown and Spectre vulnerabilities

Challenge Veeam is aware of the side-channel analysis vulnerabilities known as Meltdown CVE-2017-5754 and Spectre CVE-2017-5753, CVE-2017-5715 affecting most of the modern processors. Cause For more information regarding these vulnerabilities please visit security advisories posted by Intel...

How to log in to the Linux Helper Appliance

Purpose This article documents how to login to the Linux appliance used by Veeam Backup & Replication. This is not a common need, but may be neccesary for troubleshooting or advanced configuration. Linux appliances are used by Veeam Backup & Replication for several purposes: In Surebackup, the...

Veeam ONE Database Calculator for Veeam Backup for Microsoft 365 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 historical data when...

The remote server returned an error: (401) Unauthorized for Microsoft Loop SharePoint sites

Challenge The Backup of a SharePoint site displays the following error message: Failed to initialize site processing: /contentstorage /CSP, error: The remote server returned an error: 401 Unauthorized. The URL of SharePoint sites created by Microsoft Loop sites can be identified by the...

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...

Veeam Service Provider Console Vulnerability ( CVE-2024-29212 )

Patch Reissue - 2024-05-28 On May 28th, 2024, Veeam issued an enhanced update to address this critical vulnerability in Veeam Service Provider Console VSPC. Although our initial patch, issued on May 7th, effectively addressed the primary concern, a subsequent review identified an area for further...

Microsoft SQL Server Transaction Log are not truncated due to an error code 0x80004005 [TLS 1.0]

Challenge When backing up a machine running a Microsoft SQL server where TLS 1.0 has been disabled, a job may fail with the error code 0x80004005 TLS 1.0. The following warning will be found on the server that is being protected by either Veeam Backup & Replication or Veeam Agent for Microsoft...

Veeam Agent for Linux: Update Blocked by Repository Signing Key Change

Article Applicability This article is intended for customers managing Veeam Agent for Linux 6.3 deployments. Deployments that have already been updated to Veeam Agent for Linux 13, or are being updated to it, are not affected by the repository GPG key change. Challenge When attempting to update...

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...

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 ...

How to Disable Oracle Processing Without Disabling Application-Aware Processing

Purpose This article documents how to disable the processing of Oracle instances by Application-Aware Processing without disabling Application-Aware Processing processing for other applications running on the same machine. Solution Disable Oracle Processing for a VM Protected by Veeam Backup &...

Unable to allocate processing resources

Challenge A job within Veeam Backup & Replication fails with an error that starts with: Unable to allocate processing resources. In the section below is a list of the most common permutations of this error. Troubleshooting Below are different endings to the error "Unable to allocate processing...

Call execution timeout (100000 ms) (Veeam.Backup.SSH.PerlSoapException)

Article Applicability This article discusses an issue that only occurs when non-persistent Veeam Data Movers are used. The non-persistent data movers are only used when the account provided to Veeam Backup & Replication to connect to a Linux server does not have root or root-equivalent permission...

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...

Warning: "User does not have a valid Microsoft 365 license with SharePoint plan enabled."

Microsoft OneDrive for Business or Microsoft SharePoint backups may not be backed up, resulting in a warning: User does not have a valid Microsoft 365 license with SharePoint plan enabled...

Veeam Software Appliance/Veeam Infrastructure Appliance — Updater Component Vulnerability

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...

Failed to perform post-processing for plug-in. Error: The issuer certificate does not have a Basic Constraints extension.

Challenge After upgrading a Windows-based Veeam Backup & Replication deployment to version 13.0.1 or higher, the following error may occur: Failed to perform post-processing for plug-in $pluginName Linux $machine Error: The issuer certificate does not have a Basic Constraints extension. Examples:...

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 ...

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...

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...

vCenter Server or ESXi Host Becomes Unavailable After Its TLS Certificate Is Replaced

Challenge A VMware vSphere server becomes unavailable in Veeam Backup & Replication after the TLS certificate installed on that server has been replaced or renewed. Jobs and other operations that require a connection to that server fail while the server is unavailable. Cause This issue occurs...

Release Information for Veeam Backup for Salesforce 3 Cumulative Patches

Requirements Please confirm that you are running Veeam Backup for Salesforce 3 build 3.1.2.3957 or earlier before upgrading. You can find the currently installed build number in the Configuration About section. After the upgrade, the Veeam Backup for Salesforce build number will be3.2.1.4038...

"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...

Browser-based Application's Page Fails to Load With: ERR_SSL_KEY_USAGE_INCOMPATIBLE

Article Applicability The error discussed in this article is caused by a misconfiguration of the website's certificate. Specifically, the ERRSSLKEYUSAGEINCOMPATIBLE error occurs when the certificate used by a website has a KeyUsage value defined, but it does not include "Digital Signature" and...

How to Upgrade the NATS Server Used by Veeam Backup for Microsoft 365

Purpose This article provides information about upgrading the NATS Server used by Veeam Backup for Microsoft 365. NATS Server Version Impact It is recommended that customers use the latest supported version of NATS Server with Veeam Backup for Microsoft 365 to avoid any potential performance...

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...

VDDK error: 13 - Troubleshooting

Challenge Backup/Replication jobs fail with: VDDK error: 13.You do not have access rights to this file Solution Below is a list of possible solutions to this issue sorted by what transport mode was being used when this error occurred. Note: There are many causes for VDDK 13; this list is not...

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...

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 &...

Exchange Backup Fails With: "Failed to get folder properties. Not allowed to access Non IPM folder"

Veeam Data Cloud for Microsoft 365 Customers Customers utilizing Veeam Data Cloud for Microsoft 365 , please be advised that no actions are required to address this issue. All the necessary actions were implemented in the Veeam Data Cloud backend on 2024-04-04. Challenge A backup job in Veeam...

How to Move Backup Data for a File Backup or Object Storage Backup to a Different Repository

Purpose This article documents the procedure for migrating backup data created by an unstructured data backup job File Backup or Object Storage Backup from one backup repository to another backup repository so that the job can resume incremental backup operations using the new destination. Soluti...

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...

How to Change Account Used by Linux Hardened Repository

Prepare for Veeam Backup & Replication v12 Starting in Veeam Backup & Replication 12, the Linux Server associated with a Hardened Repository using Immutability may only be added using single-use credentials. During the upgrade to Veeam Backup & Replication 12, any Linux server associated with a...

Configuration Restore Fails With: "2200N: invalid XML content DETAIL: buffer full"

Challenge When performing a configuration restore or migration, the Restore process fails with the error: 2200N: invalid XML content DETAIL: buffer full Cannot read configuration backup Cause This error is caused by an underlying issue within PostgreSQL 15.1 and 15.2 PostgreSQL 15.1 was included...

Release Information for Veeam Backup & Replication 10a Cumulative Patch P20220304

More Recent Version Available Please find the latest version of Veeam Backup & Replication here: Veeam Downloads - Latest Version Intended audience for this update The update on this page is provided as a courtesy to customers who wish to remain on Veeam Backup & Replication 10a for an extended...

Granular sudo Permissions for Management of Veeam Agent for Linux Deployments

More Secure Alternative Starting in Veeam Backup & Replication v12.1, it is now possible to deploy Veeam Agent for Linux using pre-installed Veeam Deployer Service and add that machine to a Protection Group using certificate-based authentication instead of credentials. Using this method, no...

Unable to Generate Reports Due to Error “Veeam ONE Caching Service Maintenance”

Challenge When attempting to generate reports in Veeam ONE the report fails to load and instead for following error is displayed: Veeam ONE Caching Service Maintenance The caching service database is being prepared for the maintenance window. Often, when this error is shown, the following error...

dkms 3.1.3-1 Causes Backup to Fail With “Veeam snapshot kernel module not found”

Article Applicability This article is specifically regarding RPM-based Linux distros i.e., Oracle, Fedora, and Tumbleweed that have dkms 3.1.3 installed: root@localhost rpm -qa | grep dkms dkms-3.1.3 -1.el9.noarch Challenge Veeam Agent for Linux backup job fails with the following errors when dkm...

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...

How to Modify the Security & Compliance Analyzer's Password Complexity and Length Validation Check

Purpose This article documents how to adjust the Encryption Password Complexity and Length Validation check portion of the Security & Compliance Analyzer. Starting in Veeam Backup & Replication 12.3, encryption passwords will automatically be checked to see if they meet specific length and...

How to Manually Update Suspicious File List

Intended Audience This article is intended for Windows-based Veeam Backup & Replication deployments where the software cannot access the internet to automatically update the SuspiciousFiles.xml file used by the Veeam Data Analyzer Service. In environments where the Veeam Backup Server can access...