Network name cannot contains the following symbols: ~`!@#$%^&*+=;'><|?*:"

Challenge When attempting to assign an Isolated Network name, the following error occurs: Network name cannot contains the following symbols: !@$%^&+=;'|?:" To allow a specific symbol, remove that symbol from the va...

Recovery Media Creation and Servers with Cluster Shared Volumes

Challenge The Windows Agent Backup job for a failover cluster node with a cluster shared volume displays the following notice: Skipping recovery media collection: cluster contains CSV disks Attempting to create recovery media manually using the Recovery Media Creator on the failover cluster node...

Collection of historical performance data fails after upgrading to vSphere 5.5 Update 3

Challenge After update to vCenter 5.5 U3 historical performance collection fails with error "Unable to collect performance. A specified parameter was not correct. querySpec.size". Cause With vCenter 5.5 Update 3 VMware has limited the size of query in order to protect the vCenter database more...

Release Notes for Veeam Backup & Replication 8.0 Update 3

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 8.0 Update 3 Cause Please confirm you are running version 8.0.0.807, 8.0.0.817, 8.0.0.831, 8.0.0.917, 8.0.0.2018...

Backup to DataDomain over DDboost hangs

You are using DDBoost connection to a DataDomain device.Backup to the DataDomain device starts to hang.In the log of Veeam agent that is writing the data to the device you can see agent crash dump is...

Cloud Connect Jobs might start failing after upgrading to v8 update#3

Challenge After installation of update 3 for v8, tenants might report that their Cloud Connect jobs fail with "Failed to connect to the Veeam Cloud Connect service" error message, while tenant's job log includes "No such host is known" error message. Cause Tenant has a service provider added to h...

Remote execution of a PowerShell script fails when the VeeamBackup SQL database is on a remote SQL Server.

Challenge When using a PowerShell script that is intended to remotely execute a command upon the Veeam server, it may fail if the SQL instance that Veeam Backup & Replication is configured to use is on a different server. This KB article applies only if the following two statements are true. 1. A...

Hyper-V crash consistent Backups/Replicas due to McAfee mfehidk driver

Challenge If McAfee FS minifilter MFEHIDK driver is loaded into Windows kernel, then it doesn't allow any other driver to load at lower altitudes, it only allows other drivers to load at higher altitudes, supposedly because of proactive defense logic of McAfee Antivirus. Therefore Veeam CBT drive...

Tape media not visible in the GUI

Challenge Tape media that is labelled with barcodes starting with "CLN" or "CLR" is not visible in Veeam Backup & Replication GUI Shell. Cause Tapes with labels starting with "CLN" or "CLR" are automatically detected as cleaning tapes and are hidden in the user interface. This is by design...

RPC function call failed. Function name: [GetSvcVersion]

Challenge Veeam Backup & Replication fails to communicate with the Veeam Installer Service service on a managed remote machine with the error: Error: The RPC server is unavailable. RPC function call failed. Function name: GetSvcVersion. Target machine: remotemachine.domain.tld:6160. This article ...

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...

How to Use SFTP With Multi-OS FLR

New Feature for Improve Restore Performance Starting in Veeam Backup & Replication 11, when performing a Multi-OS File Level Restore Linux FLR, it is now possible to select an existing Linux machine to act as the helper appliance where the backup files will be mounted to retrieve files. This now...

Veeam Backup & Replication fails to connect to Linux server with an error about negotiation

Challenge When attempting to add a managed Linux server or edit a Linux repository one of the following errors occurs: Negotiation failed. The client and the server have no common key exchange algorithm. Copy Negotiation failed. The client and the server have no common encryption algorithm. Copy...

Veeam Agent for Microsoft Windows job displays warning: Partition exceeds disk layout

Challenge A Veeam Agent for Microsoft Windows backup job displays the following warning: Partition exceeds disk layout by bytes This warning may be accompanied by the error: Error: The drive cannot find the sector requested. Asynchronous read operation failed Failed to upload disk. Agent failed t...

Using V8 U-AIR wizards to restore Exchange 2003 and 2007

This KB article documents the procedure for restoring Application Items for Exchange 2003 and Exchange 2007. The Veeam Explorer for Microsoft Exchange does not support these versions of Exchange. In o...

Network traffic encryption enabled within job when no rule has been set and the Veeam server has a Public IP

Challenge During the processing of a VM by Veeam Backup & Replication on a server with a Public IP, the notification stating "Network traffic will be encrypted" is shown even though no rule is in place within the network traffic rules. Cause By default Veeam Backup & Replication enables encryptio...

Veeam Backup & Replication Upgrade Paths

Tenants of Veeam Cloud Service Providers If your Veeam Backup & Replication installation is connected to a Veeam Cloud Service Provider, contact your Service Provider before upgrading to ensure that the intended upgrade will not break compatibility. A tenant cannot be on a newer version of Veeam...

Slow Restore Performance With Direct SAN Mode

Challenge When performing an Entire VM Restore or Virtual Disk Restore using Direct SAN Restore, the performance may be sub-optimal when the restored Disk Type Setting is set to Thick lazy zeroed. Cause When using Direct SAN to restore a disk with its disk type set to Thick lazy zeroed, overall...

Modifying Data Retention Policy in Veeam ONE

Purpose This article documents how to adjust the retention of collected data stored within the Veeam ONE database. Note: When retention is enforced, data within the database is removed, but the actual database file will not become smaller. To cause the Veeam ONE database file to become smaller on...

A proxy VM may become inaccessible during hotadd backup

Challenge 'Hotadd' backup proxy virtual machine becomes inaccessible or powered off with the following possible symptoms: 1. Virtual machine randomly stops responding. 2. When guest operating system fails, there is no BSOD or kernel panic. 3. The vmx process of virtual machine fails or is killed ...

Surebackup Error “OS did not boot in the allotted time”

Challenge A VM being started by SureBackup fails with the error: OS did not boot in the allotted time Cause This error occurs when the VM being powered on by the SureBackup job fails to become stable within the "Maximum allowed boot time" specified in the Application Group settings or the Linked...

Veeam Backup & Replication - SureBackup Configuration Guide

This guide was created to help you configure and use SureBackup in Veeam Backup & Replication...

Antivirus Exclusions for Veeam ONE

Purpose This article documents antivirus exclusions that may be created to reduce the impact that antivirus software has on the functionality of Veeam ONE. These antivirus exclusions may be applied to the Windows built-in antivirus or third-party antivirus software. Note: Antivirus will not alway...

Uninstalling Veeam Backup & Replication plug-in for Labtech

Challenge Uninstalling the plug-in using Plugin Manager only removes it from the list of plugins but leaves Veeam components reports, monitors, etc. and database data intact. Cause Uninstalling the Veeam Backup & Replication Plug-in by means of the LabTech Plugin Manager is not supported. If you...

Backup and Replication jobs fail with the following error: "CDeviceBase: resize is not supported. Failed to download disk"

Challenge Backup and Replication jobs fail with the following error: "CDeviceBase: resize is not supported. Failed to download disk". The following conditions must be met: 1. Veeam 8 Update 2 8.0.0.2021 or later 2. Backed up VM is running on ESXi 5.5 or later 3. Hot Add transport mode is used 4. ...

Windows VSS Writers and Corresponding Service Names

Purpose This article documents VSS Writers and their corresponding Windows services. For more information, reference Microsoft's In-Box VSS Writers article. Solution VSS Writer Name | Service Name | Service Display Name ---|---|--- ASR Writer | VSS | Volume Shadow Copy BITS Writer | BITS |...

Backup Copy Job Failures when using ExaGrid de-duplicating storage

Challenge Backup Copy Jobs can fail when writing to ExaGrid storage. Cause De-duplicating storage can incorrectly update existing backup files during Veeam "merge" operation. Solution Make sure your ExaGrid Storage firmware version is 4.7.0 P52 or newer. For additional information please contact...

Failed to retrieve the configuration parameters of the [FontCache] service

Challenge Job could report warning or failure depending on VSS/AAIP settings: "Failed to retrieve the configuration parameters of the FontCache service. The resource loader failed to find MUI file" Affected: Hyper-V Guest VMs running Windows 2008 with MS security update KB3045171 Cause After...

Antivirus Exclusions for Veeam Agent for Microsoft Windows

Purpose This article documents antivirus exclusions that may be created to reduce the impact that antivirus software has on the functionality of Veeam Agent for Microsoft Windows. These antivirus exclusions may be applied to the Windows built-in antivirus or third-party antivirus software. Note:...

Total VMs Count in Infrastructure Overview Report

Challenge The Infrastructure Overview report shows different values between vCenter Servers Virtual Machines and Storage Number of VMs. Cause Here are the possible causes of such behavior: one VM is linked with more than one datastore; for the "vCenter Servers" templates are not counted; "Storage...

Possible Issues With Cloud Storages After Restore

Challenge After restoring a machine that was using cloud synchronization software OneDrive, Dropbox, Google Drive, etc., issues are possible when that software attempts synchronization with its service. Those cloud sync solutions may see the restored files as updated changes that need to be...

Instant Recovery or Multi-OS File Level Recovery fails when the VM has Flex-SE disk

Challenge Even if there is at least one manually created SEsparse Flex-SE disk attached to the VM in backup you will experience the following issues: A File Level Restore from Other OS session fails with the error: Failed to mount restore point PowerOn failed, vmRef 'vm-', hostRef 'host-' File...

Release Notes for Veeam ONE 8.0 Update 2

Challenge Release Notes for Veeam ONE 8.0 Update 2. Cause Please confirm you are running Veeam ONE 8 prior to installing this update. You can check this under Help | About in Veeam ONE Monitor Client, the build number should be 8.0.0.xxx. After upgrading, your version build will be 8.0.0.1669. Th...

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...

Release Notes for Veeam Backup & Replication 8.0 Update 2b

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 8.0 Update 2b Cause Please confirm you are running version 8.0.0.807, 8.0.0.817, 8.0.0.831, 8.0.0.917, 8.0.0.201...

Component state mismatch has been detected.

When attempting install or upgrade Veeam Backup & Replication you receive the warning:“ component state mismatch has been detected. Please contact Veeam technical support team directly...

Cannot restore to the backup repository host when storage VSP is enabled

Article Applicability Starting in Veeam Backup & Replication 12.1, this error will no longer occur due to internal coding changes. Challenge A Hyper-V Instant Recovery or SureBackup Job fails with the error message: Cannot restore to the backup repository host when storage VSP is enabled. Cause T...

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...

Best Practices for Microsoft Data Deduplication

Purpose This article documents Best Practices, Limitations, and Considerations relating to the use of storage that has Microsoft Windows Deduplication enabled when storing backup files created and managed by Veeam Backup & Replication. Considerations and Recommendations CRITICAL Veeam strongly...

SureBackup job fails with "Unnamed VM could not initialize" error

SureBackup job fails with "Unnamed VM could not initialize" errorIn the logs you can see the following error message:19.03.2015 14:38:08 Error Failed to power on virtual machine...

Adding Linux repository to Veeam hangs on volume discovery and fails silently

When connecting to a Linux repository with Veeam, the connection hangs on the volume discovery step and silently errors out...

How to Perform a Manual Failback (Reverse Replication)

Article Applicability This article is relevant only to non-CDP snapshot-based replicas. Reverse replication cannot be used to fail back a CDP replica. To fail back a CDP replica, use the built-in failback workflow described in Failover and Failback for CDP. Purpose This article describes how to...

Difference Between Typical and Advanced Scalability Modes

Challenge Understanding the difference between Typical and Advanced scalability modes. Cause Depending on the size of the managed virtual environment, you can choose of the following Veeam ONE installation types: Typical -- this type of installation is recommended for small to medium environments...

Failed to connect to vCenter server during Restore

During a restore you receive the error message: “Failed to connect to vCenter server”...

How to Clone a Job and Map Existing Backups to Clone

Feature License Requirement Consider the following: Starting in Veeam Backup & Replication 12.1 build 12.1.0.2131 , the job cloning functionality is available for all types of licenses. Prior to Veeam Backup & Replication 12.1 build 12.1.0.2131 , the job cloning functionality required an Enterpri...

How to Simulate Veeam Backup & Replication Disk I/O

Purpose This article provides examples of using common workload simulators diskspd and fio to simulate Veeam Backup & Replication disk I/O. Do Not Send Test Output Files to Veeam Support The write test output files testfile.dat do not contain diagnostic data. As such, please do not attach them to...

Windows 2012/2012R2 leaks memory when a hardware snapshot is created multiple times on a CSV

Challenge Windows 2012 / 2012 R2 Hyper-V hosts leak memory when a hardware snapshot is created/removed multiple times on a CSV with a hardware provider. Cause Windows 2012 / 2012 R2 Hyper-V hosts leak memory when a snapshot is created on a CSV using hardware provider. Due to the fact that only a...

Veeam ONE 8.0 Patch 1 Release Notes

Challenge Release Notes for Veeam ONE 8.0 Patch 1. Cause Please confirm you are running Veeam ONE 8 prior to installing this update. You can check this under Help | About in Veeam ONE Monitor Client, the build number should be 8.0.0.xxx. After upgrading, your version build will be 8.0.0.1615. Thi...

Backup Job or Backup Proxy rescan fails with “Failed to create processing task for VM Error: Disk 'GUID' not found”

After installing patch 1 for Veeam Backup & Replication 8, jobs may start to fail with the following error message:Error Failed to create processing task for VM Error: Disk ''...

Surebackup with the Domain Controller role enabled causes Windows crash (the “blue screen” error) on the Veeam Backup server.

Challenge During a SureBackup or SureReplica job that processes a VM that has been configured to use the Domain Controller role, a Windows "blue screen" error occurs on the Veeam Backup Server. Cause Veeam Backup & Replication software mounts the VM's VMDK using VDK which can cause some anti-viru...