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Message: "Carbonite Safe Server Backup Controller and/or Carbonite Safe Server Cloud Controller Could not be Started due to Log on Failure"
When the product attempts to perform some action, such as saving a backup set, starting a backup, or changing log level, you might receive an error message. However, the error can appear at any time. One of the errors could be as follows: Carbonite Safe Server Backup Controller could not be started due to a log on failure, Carbonite Safe Server Cloud Controller could not be started due to a log on failure, Carbonite Safe Server Backup Controller and Carbonite Safe Server Cloud Controller could not be started due to a log on failure.
Known Issue: Carbonite Safe Server Backup Service(s) Goes into a Bad State
When Carbonite Safe Server Backup attempts to perform some action, such as saving a backup set, starting a backup, or changing log level, you might receive an error message stating that one of CSSB's services could not be started. However, the error can appear at any time.
Message: "Carbonite Safe Server Backup Controller and/or Carbonite Safe Server Cloud Controller Could not be Started Because Another Program is Using The Same Port" For CSSB 6.x Enhanced
When the product attempts to perform some action, such as saving a backup set, starting a backup, or changing log level, you might receive an error message. However, the error can appear at any time. One of the errors could be as follows: Carbonite Safe Server Backup Controller could not be started because another program is using the same port, Carbonite Safe Server Cloud Controller could not be started because another program is using the same port, Carbonite Safe Server Backup Controller and Carbonite Server Cloud Controller could not be started because another program is using the same port.
How to Recover System State on an Active Directory Domain Controller For CSSB 6.x Enhanced
The Active Directory database can be restored via System State on a Windows Domain Controller. However, this process requires special procedures which are different from a standard System State restore. A Windows Server running Active Directory Domain Services must be booted into Directory Service Restore Mode (DSRM) in order to restore the System State. DSRM is similar to Windows Safe mode and has no Active Directory services running.
Moving the Carbonite Safe Server Backup Database
In cases where the product's database grows and there is no more disk space, the backup will fail. To help resolve this problem, you can move the database to another location with sufficient disk space.
Performing System State Recovery on Windows Small Business Server 2011
In order to perform a System State restore on Small Business Server (SBS) 2011, the computer needs to be booted into Directory Service Restore Mode (DSRM) since SBS 2011 is the Active Directory Domain controller.
Message: "Error 1722: Carbonite Safe Server Backup installation failed."
Error 1722 is a generic error that can occur during a new installation of the product or when upgrading from one version to another. This error appears when an unexpected problem occurs that the installation process cannot handle.
FAQ: What is the amandabackup / CarboniteUser User? (CSSB 6.x) For CSSB 6.x Enhanced
What is the amandabackup / CarboniteUser User?
List of CSSB Services and Processes
The product may install and run a number of Windows services during initial setup. This article contains a list of the services and processes used by CSSB.
Microsoft Exchange Server Database Backup For CSSB 6.x Enhanced
The product supports full, incremental and differential backups of Microsoft Exchange Mailbox Databases and Public Folder Databases. CSSB performs VSS based backup of Store database files (.edb and .stm), transaction logs, and checkpoint files for all the Mounted Storage Groups.
The CSSB User Interface Does not Open After a System State Recovery
You may experience problems when you use version 5.0 or later of the product to restore a System State backup taken in version 4.14 or earlier. This issue can be resolved by either replacing the ZWCService.exe or uninstalling and reinstalling Carbonite Safe Server Backup.
Relocating the misc Folder
The product uses the misc folder as temporary space during some backup operations. Disk space limitations may make successful backup runs impossible. In these instances, the misc folder within the product needs to be relocated to a drive with more space. To move the misc folder to a new location, you must edit the Windows Registry and move some existing files.
How to Make amandabackup / CarboniteUser a Domain User For CSSB 6.x Enhanced
Carbonite Safe Server Backup creates the amandabackup / CarboniteUser user during installation. This user is used for backup and restoration, and is critical to the process. The amandabackup / CarboniteUser user is created on the domain by default if a domain is detected. Users can choose to create the user locally instead. If no domain is detected, amandabackup / CarboniteUser is created locally.
Special Instructions for Installing CSSB Version 5.6
Carbonite Safe Server Backup version 5.6 is intended for users on legacy operating systems where installation of the modern 6.x version is impossible. Unlike the modern 6.x version, CSSB 5.6 requires that you apply a patch before it will function correctly. You must apply the patch after any install or re-install of CSSB 5.6. This includes upgrading to 5.6 from a lower version. Review this article for more information.
Message: "Cloud communication error [CLOUD_ERROR_ExpiredToken]"
A security certificate has expired and must be replaced within the Carbonite Safe Server Backup (CSSB) client.
Known Issue: Carbonite Safe Server Backup Service(s) Goes into a Bad State After Upgrading
After upgrading to a new version, CSSB service (s) goes into a bad state where the servic(s) are stopped, missing, not running, or cannot be started.
Message: "Windows could not start the Carbonite * Service on Local Computer. Error 1067: The process terminated unexpectedly."
A CSSB service fails to to start with "Windows could not start the Carbonite * Service on Local Computer. Error 1067: The process terminated unexpectedly."
Installing CSSB on a Read-Only Domain Controller
Special instructions must be followed to install the product on a Read-Only Domain Controller (RODC). These instructions are largely centered around the amandabackup / CarboniteUser user.
System Requirements for Carbonite Safe Server Backup For CSSB 5.x & 6.x Classic
The current version of the product works for Windows XP (Home or Pro) with SP2 or higher, Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows Small Business Server 2003, Windows Server 2003 SP2, Windows Server 2003 R2, Windows Small Business Server 2008, Windows Server 2008, Windows Server 2008 R2, Windows Small Business Server 2011, Windows Server 2012, and Windows Server 2012 R2 operating systems.
System Requirements for Carbonite Safe Server Backup (CSSB 6.x) For CSSB 6.x Enhanced
The current version of the product works for Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11, Windows Small Business Server 2008, Windows Server 2008, Windows Server 2008 R2, Windows Small Business Server 2011, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, and Windows Server 2022 operating systems.
Microsoft Exchange Server Database Backup (CSSB 5.x) For CSSB 5.x & 6.x Classic
The product supports full, incremental and differential backups of Microsoft Exchange Mailbox Databases and Public Folder Databases. CSSB performs VSS based backup of Store database files (.edb and .stm), transaction logs, and checkpoint files for all the Mounted Storage Groups.
Restoring the Windows System State For CSSB 6.x Enhanced
The product supports the recovery of Windows System State by restoring the Registry, Boot files, System files, Active Directory and more. The product offers recovery of Windows System State on all the supported Windows platforms. The entire contents of the Windows System State backup will be restored. Selective restore of individual System State components is not possible. By default, System State will restore to the original location and overwrite existing files.
Windows System State Backup For CSSB 6.x Enhanced
What types of files does a Windows System State Backup set protect?
Restoring Mailbox Items in Exchange 2007
It often happens that a mailbox or mailbox items such as emails or folders are accidentally deleted. The product supports the restore of mailbox items in Microsoft Exchange 2007.
How to Use a NAS Device with CSSB For CSSB 6.x Enhanced
Carbonite Safe Server Backup can store your backups on any Network Attached Storage (NAS) device. CSSB can also back up data that exists on a NAS.
Known Issue: CSSB Process Crashes with "MSVCR*.dll" Application Error
Most often, one of the product's processes crashes when a backup, upload, download, restore, or any other Carbonite Safe Server Backup (CSSB) operation fails, usually with the operation failed unexpectedly error message.
Message: "Cloud Connection Error " For CSSB 6.x Enhanced
When attempting a backup operation, creating a new backup set, or when checking the cloud connection, the following cloud connection error appears: "Unable to connect to the cloud storage provider. Please check your internet connection, then try again."
Message: "One or more of the VSS Writers required for backup type are missing"
If one or more VSS Writers is unavailable while attempting to perform a backup, you will receive an error message stating that the Application writer's data is not available. Please check the application writer status.
Restoring Microsoft SharePoint For CSSB 6.x Enhanced
We support Content Recovery, Web Application Recovery and Disaster Recovery for Microsoft SharePoint. You can restore your data to the original backed up computer or to a different computer.
List of VSS Writers and Services
Carbonite Safe Server Backup (CSSB) utilizes a set of built-in Windows functions known as Volume Shadowcopy Services, or VSS. VSS allows backups of in-use, locked, or open files without interrupting whatever process or user is currently accessing those files. Most backup types in CSSB will rely upon one or more VSS Writers.
Message: "One or more of the VSS writers required for backup have failed"
If a VSS Writer's status is unstable while attempting to perform a backup, you will receive an error message stating Writers status is not stable. Try after restarting application Writer service.
Finding Large Files via PowerShell
File System backups with Carbonite Safe Server Backup (CSSB) are “file level.” If a file changes, the entire file is backed up next time CSSB performs a backup that includes that file. As a result, Incremental and/or Differential backups can be larger than expected. These instructions can help you determine which large files change.
Creating a Bare Metal Image Backup For CSSB 6.x Enhanced
A Bare Metal Image backup allows the restore of an entire system to a similar or dissimilar hardware.


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