Veeam Explorer for Exchange (VEX) Restore Failure - HTTP Error 501 – Load Balancer

Challenge The following KB is only relevant if a Load Balancer is being used. When attempting to use the "Restore to " function the restore fails with "HTTP Error 501". The following will be found in the logs: Item restore failed: The request failed with HTTP status 501: Invalid Request. Error:...

vCloud jobs are not shown in SCOM views of Backup jobs

Challenge In Backup Job views under SCOM Monitoring, all backup jobs are discovered by Veeam Management Pack for Veeam Backup except for vCloud vCD backup jobs. Cause The behavior is caused by a known issue and fixed in Veeam Management Pack v7. Solution Upgrade to most recent version. More...

Veeam Backup File Encryption Support

Challenge There is a need to encrypt the backup files while they are sitting on storage. Solution Starting with Veeam Backup & Replication v8 data encryption is available, more information can be found here: https://helpcenter.veeam.com/docs/backup/vsphere/dataencryption.html More Information...

Error: Object reference not set to an instance of an object after manually deleting a replica VM

Challenge You receive an error after manually deleting a replica VM. Cause The replication job is still mapped to the previous replica VM. An error is produced when Veeam attempts to access the invalid object. Solution Unchecking the Low Connection Bandwidth Enable replica seeding checkbox does n...

Slow backup perfomance in HOTADD (virtual appliance) mode

Edge Case Issue The issue documented in this article is highly uncommon and is directly related to storage and network congestion. For more information, closely review the Broadcom KB Article 1002598. As this is an issue between the vSphere environment and the backend datastore storage, this...

Incorrect performance values for some datastores on the Disk I/O chart

Challenge Incorrect performance values on the Disk I/O chart for some datastores. Cause When the same LUN is shared by multiple datastores, the Disk I/O chart for these datastores will show an overall activity for the LUN, rather than an activity for a specific datastore. Solution This is an...

How To Refine nWorks Data Collection in SCOM

How To Refine nWorks Data Collection in SCOM...

Veeam ONE 13.1 Upgrade or Installation Fails with: Signature verification failed after retries for 'Newtonsoft.Json.dll'

Challenge When attempting to upgrade or install Veeam ONE 13, the System Configuration Check stage of the setup wizard fails, and the following error is displayed: Signature verification failed after retries for...

Release Information for Veeam Backup for Microsoft 365 5a

This update has been superseded by Release Information for Veeam Backup for Microsoft 365 5b. Requirements Please confirm that you are running one of the following versions of Veeam Backup for Microsoft 365 before upgrading to 5a: 3.0 build 3.0.0.422 4.0 build 4.0.0.1345 4a builds 4.0.0.1553,...

How to change backup proxy type

Challenge A new backup proxy can be deployed with one of the two types - domain or workgroup. This article explains how you can change the type of a backup proxy after it has been added to the Veeam Backup for Microsoft 365 infrastructure. Cause After you added a new backup proxy to the Veeam...

Enterprise Plus license is required error on dashboards and reports

Challenge Verify health of Data Warehouse Cause Veeam MP license is synchronized to the Data Warehouse then the reports load this information. If license is invalid in the Data Warehouse due to Synchronization server having issue this error will occur Solution 1. Open SCOM Operations Manager...

VeeamONE Update Failing – The specified path, file name, or both are too long.

Challenge VeeamONE V9.5 Update 1 install fails with the following error: "The specified path, file name, or both are too long. The fully qualified file name must be less than 260 Characters, and the directory name must be less than 248 characters." Cause Conflict with BusinessView component...

Jobs fail with “Error: Invalid product version” after upgrade to Veeam Backup & Replication v9

Challenge After upgrading to Veeam Backup & Replication v9, all jobs fail with "Error: Invalid product version." Cause During the upgrade process the new v9 license file was not installed. Solution Install the new v9 license file that can be acquired from the support portal. The following link wi...

After applying update 1 for vSphere 6.0, Jobs fail with NFC storage unavailable

Challenge Jobs fail with error NFC storage unavailable. Within the agent..source.log file on the source proxy the following error can be found: ERR |SSL error, code: 336151568.error:14094410:SSL routines:SSL3READBYTES:sslv3 alert handshake failure Cause First with Update 1 for vSphere 6.0 and the...

Throttling Rules Not Being Applied

Challenge A configured Network Throttling rule does not appear to be taking effect. Solution Traffic can only be throttled between backup infrastructure components where the Veeam Data Movers are deployed. These components differ depending on a data protection scenario. For more information, revi...

Veeam Backup & Replication - SQL Backup Guide: Using Microsoft SQL Server Agent With Application - Aware Image Processing

This guide was created to assist you with successfully backing up, and restoring, Microsoft SQL databases...

Unexpected Highest Latency Values Shown in Veeam ONE

Challenge Veeam ONE indicates unreasonably high values for highest latency on VMs see screenshot below: Cause The same latency values can be observed in VI Client performance charts under disk/real-time during snapshot deletion. The values may also be negative. Solution This is a known behavior o...

Backup Copy job report shows inflated traffic saving in the notification email

Challenge After installing Patch 1 for Veeam v7, the enhanced Backup Copy job report shows inflated traffic saving in the notification email. Cause Traffic savings ratio is incorrectly calculated off total VM size, rather than the size of changed data. Solution Please download and apply the...

Event ID 10378 in the Operations Manager Event Log on Collector

Challenge Operations Manager Event Log on the Collector server contains the following warning: ID 10378 Module was unable to convert WMI setting .\timestamp Event IDs 1103 and 4506 may also be observed. Cause The root cause is currently investigated by Microsoft. This article will be updated afte...

Release Information for Veeam KubeVirt Proxy

Purpose This article documents releases of the Veeam KubeVirt Proxy KVP utilized by the Veeam Plug-In for KubeVirt. Note: Veeam Plug-In for KubeVirt is also know as Veeam Plug-In for Red Hat OpenShift Virtualization. Release Information 1.0.1 2026-10-02 Security Updated the following packages to...

List of Security Fixes and Improvements in Veeam Plug-in for oVirt KVM

Purpose This article describes all security-related fixes and improvements introduced in each release or update of Veeam Plug-in for oVirt KVM. This article aims to provide our customers' security and compliance teams with detailed information on security improvements between releases. Security...

Release Information for Veeam Backup for Microsoft Azure v3a

Requirements Please confirm that you are running version Veeam Plug-In for Microsoft Azure v2 build 2.0.0.303 or later before upgrading. You can find the currently installed build number Server Version in the About section under Configuration | Support Information. After installing Veeam Plug-In...

Release Information for Veeam Backup for Microsoft 365 5d Cumulative Patch KB4270

This patch is superseded by Veeam Backup for Microsoft 365 5d Cumulative Patch KB4278 Requirements Please confirm you are running Veeam Backup for Microsoft 365 build 5.0.3.1033 or higher before installing Cumulative Patch KB4270. You can check this under Help and Support About in Veeam Backup fo...

Veeam Agent for Microsoft Windows can't be auto-updated to the latest version on Windows 7, 2008 R2, 2012

Challenge Veeam Agent fails to run auto-update and download the latest version on the following operating systems: Microsoft Windows 7 SP1 Microsoft Windows Server 2008 R2 SP1 Microsoft Windows Server 2012 Cause Veeam Agent utilizes BITS to download the latest versions from...

Hyper-V Backup jobs failing with an error "The system cannot find the file specified" after upgrade to Veeam B&R 9.5 Update 4

Challenge After installing Veeam Backup & Replication 9.5 Update 4, Hyper-V backup without application-aware processing may fail with the error "The system cannot find the file specified". Version Specific Article This article is relevant only to Veeam Backup & Replication 9.5.4.2615. Cause This...

Cloned Nimble volumes are not visible

Challenge By default, cloned Nimble Volumes are not shown in Veeam Backup and Replication UI and cannot be interacted with. However you can implement registry setting that will enable Nimble cloned volumes for interaction. Solution 1. Create the following registry value on the Veeam Backup and...

System logs rapidly grow in size filled by veeamsnap errors

Agent for Linux kernel driver veeamsnap fills system logs with memory allocation error messages rapidly, system might get low on disk space...

Veeam Availability Console Migration FAQ

This is a FAQ page for Veeam Availability Console migration...

Slow replication when target proxy uses Virtual Appliance (HotAdd) mode

Challenge Incremental replication throughput is slow when target proxy uses Virtual Appliance transport mode HotAdd. Cause This issue is caused by VMware's limitation. Writing to VM snapshot in hotadd mode may cause high I/O load on the target datastore and result in latency spikes and slow...

WAN Accelerator Port Configuration

This KB provides information for port configuration with the use of WAN accelerator...

Veeam ONE Compatibility Patch for Cloud Director 10.4

The hotfix on this page was built specifically for Veeam ONE v11a 11.0.1.1880. Requirements Before installing this hotfix, ensure you are running Veeam ONE v11a 11.0.1.1880. You can check the version under Help | About in the Veeam ONE Client. Resolved Issues When attempting to add VMware Cloud...

Vulnerabilities Resolved in Veeam Backup & Replication 12.3.2 P4

Article Applicability All vulnerabilities listed in this article: Affect only Veeam Backup & Replication 12.3.2 P3 build 12.3.2.4854 and older builds. Are resolved in Veeam Backup & Replication 12.3.2 P4 build 12.3.2.4934. Do not affect any Veeam Backup & Replication version 13 builds. Customers...

List of Security Fixes and Improvements in Veeam Plug-in for Xen

Purpose This article describes all security-related fixes and improvements introduced in each release or update of Veeam Plug-in for Xen. This article aims to provide our customers' security and compliance teams with detailed information on security improvements between releases. Security Fixes a...

Access Denied for ListBuckets/GetBuckets on S3-Compatible Repositories

Challenge When adding an S3-compatible object storage repository to Veeam Backup & Replication, or during regular use of an existing one, Access Denied events related to a ListBuckets/GetBuckets operation may appear in the object storage system's access logs. These issues occur even though the...