When you open the nworks Web UI in a browser, you see a blank screen.

When you open the nworks Web UI in a browser, you see a blank screen instead of the logon screen/management screen. You may also see a Java exception stating that you need to add the site to the Trusted Sites zone...

Build Numbers and Versions of Veeam Plug-In for Xen

This KB article lists all versions of the Veeam Plug-In for Xen and their respective worker build numbers. Version | Plug-In / Worker Build | Release Date ---|---|--- Veeam Plug-In for Xen 1 Releases Veeam Plug-In for Xen 1.0 Included with Veeam Backup & Replication 13.1 | 13.1.0.295 | 2026-07-29...

List of Security Fixes and Improvements in Veeam Recovery Orchestrator

Purpose This article describes all security-related fixes and improvements introduced in each release or update of Veeam Recovery Orchestrator. This article aims to provide our customers' security and compliance teams with detailed information on security improvements between releases to help the...

Veeam ONE v13 Upgrade Fails With "Failed to configure the product. Some configuration actions failed to complete."

Article Applicability This error occurs only when upgrading to Veeam ONE build 13.0.0.5630. This issue was resolved starting in Veeam ONE build 13.0.1.5860. Challenge The upgrade to Veeam ONE build 13.0.0.5630 fails with the following error during step 3 Upgrading Veeam ONE Server...: Failed to...

The provided one-time code is incorrect. Check if the backup server time is correct.

Challenge When attempting to connect to the Veeam Host Management Console, after entering the MFA TOTP code, the following error occurs: The provided one-time code is incorrect. Check if the backup server time is correct. Solution There are two potential causes for time mismatch: Cause 1:...

How to Install and Configure PgBouncer for Veeam Backup for Microsoft 365

PgBouncer must not be deployed on the machine where Veeam Backup for Microsoft 365 is installed. This article is intended only for deployments where the PostgreSQL Instance used by Veeam Backup for Microsoft 365 is hosted on its own dedicated server. For deployments of Veeam Backup for Microsoft...

Veeam Backup for Salesforce Built-In Updater Not Finding Updates

Challenge In Veeam Backup for Salesforce v1, the Updater displays no updates available despite the fact that newer versions are available. Cause The updater fails to identify new updates as being available because of an expired or incorrect GPG key used to verify package integrity. Without the...

Imagestream Export or Restore Fails With "error writing layer: no space left on device"

Challenge Export Action or Restore Action of OpenShift Imagestream fails with the following error: Failed to exec command in pod: command terminated with exit code 1.stdout: error writing layer: write/var/lib/image//blobs/sha256/: no space left on device Cause During the export or restore of an...

Overcoming Failed Snapshots Using Ignore Exceptions

Challenge This article demonstrates how to use the Ignore Exceptions feature to overcome failed snapshots due to workloads not in a ready state. Description: Job failed to be executed Veeam Kasten for Kubernetes has retry logic to overcome service interruptions during any job. If a Backup does no...

Changes to eDirectory May Not Appear in File Level Restore for OES 2023 and later

Challenge When performing a Linux File Level Restore, using a helper appliance, to restore the database for eDirectory on OES 2023 and higher, the most recent state of the database found within the restore point lacks changes made just before the backup job ran. Cause This happens because the...

ORA-27515 Error During Managed Application Backup Policy Run

Challenge Running a managed backup policy with Veeam Plugin for Oracle RMAN results in job failure: Failed to execute plug-in manager command: RMAN-03002: failure of backup command at 07/13/2023 Plugin logs /tmp/veeampluginlogs and database trace files reference ORA-27515 error: $ grep ORA-27515...

Veeam Backup for Microsoft 365 Updater Fails With: "Error opening installation log file."

Challenge For Veeam Backup for Microsoft 365 deployments from AWS Marketplace or Microsoft Marketplace, when attempting to install discovered updates or when the auto-updater attempts to update Veeam Backup for Microsoft 365, the update process fails with the error: Error opening installation log...

Release Information for Veeam Backup for Google Cloud 4 Patch 1

Requirements Before installing this patch, please confirm that you are running Veeam Backup for Google Cloud 4 build 4.0.0.1072. 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...

Export report email from Veeam Explorer for Microsoft Exchange is sent in an unexpected language

Challenge Export reports sent by Veeam Explorer for Microsoft Exchange are illegible or unexpectedly contain Chinese characters. Cause The issue is caused by an encoding conflict. By default, Veeam Explorer for Microsoft Exchange uses UTF-16 character encoding, and the issue appears under followi...

Veeam Plug-In for Oracle RMAN Cumulative Patch P20210507

Challenge A backup using the RMAN plug-in fails with the following error: ORA-19511: non RMAN, but media manager or vendor specific failure, error text: Operation is terminated. Copy Cause The failures can happen due to desynchronization between different threads started in different backup...

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...

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...

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...

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...

Veeam Backup for Microsoft 365 4b cumulative patch KB3119

Challenge Veeam Backup for Microsoft 365 4b cumulative patch KB3119. Please note that Veeam Backup for Microsoft 365 4с is now available and contains all the resolved issues from Veeam Backup for Microsoft 365 4b. Cause Please confirm you are running Veeam Backup for Microsoft 365 4b build...

Veeam Backup for Microsoft 365 Support for Microsoft Office 365 Multi-Geo Tenant

Purpose This article documents Limitations and Considerations when using Veeam Backup for Microsoft 365 to protect Microsoft 365 with the Multi-Geo feature enabled. Solution Veeam Backup for Microsoft 365 6.0 and newer The Multi-Geo feature is fully supported but has the following limitations:...

Scale-out Backup Repository offload job to Quantum DXI used as S3 storage fails with "Failed to retrieve SSL certificate. Underlying error: PRNG not seeded" error

Challenge Veeam Backup & Replication fails to perform an S3 offload task if targeted to Quantum DXI storage. The error retrieved in UI says: "Failed to retrieve SSL certificate. Underlying error: PRNG not seeded" 06.01.2020 13:38:21 Info PublicCloudCertificateLoader Loading certificate for...

Backup Jobs with Public Folders Fail

Challenge When backing up public folders using Veeam Backup for Microsoft 365 the following error occurs: Processing mailbox [email protected] failed with error: Failed to synchronize item changes in folder: FOLDERNAME.. Access is denied. Check credentials and try again...

How to Use Multiple Backup Repositories Pointing to a Single Catalyst Store

Product Improvement Starting in Veeam Backup & Replication 13.1, multiple backup repositories sharing a single HPE StoreOnce Catalyst Store can be created, edited, and rescanned directly in the Veeam Backup & Replication Console using the Folder field of the New Backup Repository wizard. For...

Veeam Backup & Replication Fails to Connect to Linux Servers Due to Firewall Configuration

Challenge Veeam Backup & Replication may fail to connect to some Linux servers depending on their firewall configuration. For example, distributions based on Debian, SLES, or RHEL have default firewall configurations that may block necessary connections. Cause Linux OS firewall configuration and/...

Performance Impacts of Deduplicated Storage Systems

To learn about Deduplication Appliance Best Practices, visit KB1745. Challenge The following Veeam technologies are dependent on primary backup storage random I/O performance: Instant Recovery VM/Disk/NAS/Databases Windows and Linux File Level Recovery Application Restore Cloud Tiering Cloud...

Restored UEFI-based Windows 2008 R2 SP1 cannot be booted in Hyper-V environment

Challenge After successfully restoring a UEFI-based machine running Server 2008 R2 SP1 to a Hyper-V host, the VM fails to boot. Cause The machine fails to boot due to a machine configuration that conflicts with Hyper-V. For Hyper-V guest Virtual Machines, Server 2008 R2 is only support for use wi...

Backup job fails with a SQL VSS Writer error after installing ACT! Software

Article Applicability This article is only applicable to a scenario involving all four of the following: 1. A Backup Job using Application-Aware Processing 2. A Guest OS with ACT! Software Installed 3. This VSS error: Writer's state: VSSWSFAILEDATPREPARESNAPSHOT. Error code: 0x800423f4. 4. This...

Veeam Availability Console U1 Cumulative Patch 1850

Challenge Veeam Availability Console U1 Cumulative Patch 1850. This update supersedes Veeam Availability Console U1 Cumulative Patch 1824. Cause Please confirm you are running version 2.0.2.1750 or later prior to installing this cumulative patch 1850. You can check this under Windows Programs and...

VeeamZIP licensing VMs in Full version of Veeam

Challenge VeeamZIP began using a license up in paid versions after 9.5.0.1536. Cause This was expected behavior, but the decision has been made to change this behavior in order to allow users to back up VMs with VeeamZIP without using a license. Solution This will be fully changed in future...

vCenter tags collection/assignment using PowerCLI tool

Challenge In some cases, Veeam ONE cannot collect or assign vCenter tags properly on vCenter 5.x versions. You can identify the issue by the following error messages in the Veeam ONE Reporter log files: Failed to execute SOAP command "CInvSvcCreateCategory". Inventory Service was not created. Can...

How to Restore from Microsoft Exchange 2007 with Veeam Backup and Replication

Challenge This KB article documents the procedure for restoring Exchange 2007 application items using a Surebackup job with export to PST. Please note that as of April 2017, Microsoft no longer supports Exchange 2007. As such, steps 7 and 8 of this process are no longer supported by Veeam Technic...

Unable to set acceptance level of partner due to installed VIBs having a lower acceptance level.

Article Repurposed Before this article's update in 2025, this article contained information about "Creating a VMware ESXi extension VIB for Veeam Backup from Storage Snapshot with Cisco HyperFlex IOvisor processing." Those directions were removed as the VIB extension only needed to be created for...

SureBackup Fails After MS Update KB3139914

Challenge SureBackup script tests fail as seen below: Info SureBackup VMNAME ScriptTests Begin 'Predefined script 1: name DNS Server, starting...' Error Failed to create process with net logon ERRORENVVARNOTFOUND System.Exception This is the DNS Script test specifically. The various script tests...

Backup jobs stop working with NetApp SteelStore Cloud Integrated storage after upgrading to Veeam version 9

Challenge Aafter upgrading Veeam Backup & Replication to version 9, backup jobs to a NetApp repository based on a SteelStore host platform fail. The following error message can be seen in the job logs: " Error File not found. File name: \\PathToShare\BackupFolder\JobName.vbm" The NetApp log...

Job's Next Run Date Doesn't Match Schedule

Challenge The 'Next Run' date shown for a job does not match the settings selected in the Schedule tab of the job. For example, a job configured to run Monthly on the last Saturday displays a 'Next Run' date of the upcoming Saturday, which is not the last Saturday of the month. Cause This occurs...

The negotiation of encryption algorithm is failed

Challenge When trying to restore files from a Veeam appliance to the original location using Other OS restore, the following error is received: "The negotiation of encryption algorithm is failed" Cause Between Linux flavors, certain Ciphers may be enabled or disabled by default or by local policy...

Web Client Plug-in error: “invalid Single Sign-On token”

Challenge When a new user of the vSphere web client attempts to access the Veeam Web Client Plug-in, they encounter the following error: Server error: Failed to login to Veeam Backup Enterprise Manager. Login failed due to invalid Single Sign-On token Cause To successfully obtain statistics from...

Hyper-V backup job fails to create shadow copy with default shadow storage limit

Challenge Backup or replication of a Hyper-V VM fails. In the Windows event logs on the Hyper-V host server, there is an error with ID 8193 from source VSS: Volume Shadow Copy Service error: Unexpected error calling routine Cannot find anymore diff area candidates for volume...

Patch 1 Release Notes for Veeam ONE 6.5.0.676

Challenge Patch 1 for Veeam ONE 6.5.0.676 resolves a number of issues described in this article. All patches are cumulative, which means that this patch includes all fixes listed below. Cause Prior to applying this patch, make sure you are running Veeam ONE version 6.5.0.676. You can check this...

How to troubleshoot CIM hardware monitoring

Challenge The CIM API allows Veeam products to receive up-to-date information without requesting hardware refreshes, but this requires a separate connection, and if that connection cannot be made, the hardware data will be collected as it was in earlier versions, and request periodic hardware...

The specified transports are not available

Challenge The SAN or Virtual Appliance mode intermittently fails with the error: Error: Client error: The specified transports are not available. Available transports: nbd. Specified transports: san. VMDK path: Datastore VMname/VMName.vmdk. The following entries can be seen in the VeeamAgent log:...

Return argument has an invalid type

Challenge Veeam Backup Enterprise Manager fails to collect data from a Veeam Backup server with the following error: Return argument has an invalid type. The following error can be seen in VeeamBES.log: timestamp Info Reporting data were successfully collected from the server server.local timesta...

SureBackup Performance Considerations

Purpose This article provides advice and information on understanding and improving SureBackup performance. Solution SureBackup Performance Considerations The Repository where the backup files are stored, and the Mount Server used by that Repository, should be in the same data center as the ESXi...

There are no more endpoints available from the endpoint mapper server

Challenge A Backup job with Application-Aware Processing enabled fails with the error: There are no more endpoints available from the endpoint mapper server Cause The error is being relayed by Veeam Backup & Replication from the Guest OS. RPC is not functioning correctly. Solution Before running ...

Resolved OS-Level Vulnerabilities for Veeam Appliances

Purpose This article was created to help customers and security officers easily identify and confirm whether known, public vulnerabilities have been resolved within the underlying Linux-based operating system of the Veeam Software Appliance and Veeam Infrastructure Appliance. Veeam JeOS Just Enou...

Service Provider Migration to Unified Veeam Data Cloud FAQ

Below are the most commonly asked questions. What is changing with my Veeam Data Cloud for Microsoft 365 experience? Veeam is transitioning Veeam Cloud Service Providers VCSPs and their customers to Veeam Data Cloud, a unified multi-workload interface. This new experience allows you to manage...

Azure Block Mode Export Failure Due to NetworkAccessPolicyIsDenyAll with Veeam Kasten

Challenge If using Veeam Kasten to protect persistent volumes provisioned with the Azure Disk CSI provisioner, and encounter the following error during the block mode export phase of a policy run: Failure in exporting restorepoint with log details similar to: Access not permitted for resource...

Required Package Changes in Solaris 10 and 11.3

Challenge Solaris 10 does not include the CA certificates required for S3 repository connections, nor does it natively provide OpenSSH with modern features. For secure S3 access and SSH communications with the Veeam Software Appliance VSA for Veeam Backup & Replication, you must install both...

Release Information for Proxmox Virtual Environment Plug-In v12.1.1.1024

Requirements This update to the Proxmox Virtual Environment Plug-In for Veeam Backup & Replication requires: Veeam Backup & Replication build 12.2.0.334 You can check the build number in the Veeam Backup & Replication Console's Main Menu ≡ under Help About. Proxmox Virtual Environment Plug-In for...