Having problems with UrBackup? Please read before posting

First of all: Sorry your are having problems with UrBackup. We strive to keep UrBackup bug free, but as with every software project this is a difficult endeavour, which is dependant on the community reporting potential problems.

Before you post for help or describe the problem you should check the following:

  • Is there already an ongoing discussion about this problem? Use the forum search functionality.
  • Check the manual and FAQ
  • UrBackup is Open Source. You may be able to fix the problem and post the solution.

When reporting a problem

  • Create a new forum thread. Do not report your problems directly to the developers.
  • Describe your problem in as much detail as possible. Because you are the first to report this problem there may have been some unusual steps/software constellations causing the problem. If possible, describe those steps and/or software.
  • Include details about operating system, file system, UrBackup versions of both the client and the server
  • Attach or send the log files of the client and/or server. Those log files may contain confidential data. Send them to bugreports@urbackup.org referencing your new thread to avoid posting them publicly, but public posting is preferred. When in doubt do this with both the client and server log file.
  • If UrBackup (client or server) crashes on Windows it creates crash dumps. The crash dump location is logged to the log file. Attach the crash dump or send it to bugreports@urbackup.org referencing your new thread (they may contain confidential data). Instructions for GNU/Linux and FreeNAS.

Log files

The server log file is per default located at C:\Program files\UrBackupServer\urbackup.log. Change warn to debug in C:\Program files\UrBackupServer\args.txt to create a debug log file. Debug log files are preferred. The log file on Linux/FreeBSD is located per default at /var/log/urbackup.log. The log level is an argument to the server program (urbackupsrv run -v debug) or can be configured via /etc/default/urbackupsrv or /etc/sysconfig/urbackupsrv.

The client log file is per default located at C:\Program Files\UrBackup\debug.log on Windows. Run C:\Program Files\UrBackup\enable_debug_logging.bat as admin to enable debug logging. On Linux/FreeBSD the client log file is located at /var/log/urbackupclient.log. To enable debug logging run the backend with urbackupclientbackend -v debug or it can be configured via /etc/default/urbackupclient or /etc/sysconfig/urbackupclient.
On macOS the client log file is located at /Library/Logs/urbackup_client_backend.log.

Attach the log files to your new post or send them to bugreports@urbackup.org, because they may contain data which should not be public.

6 Likes
Win Server 2012 R2 backup failing
VSS failing with no VSS errors
Could not read MBR. Error message: Error opening Device 0
Urbackup 1.4.10 windows client problem (NTFS journal related?)
Web Login Intermittently Available
Client connection error
Urbackup server will not start (Fresh Install)
Linux Client not Working
File backup error 123: Cannot access path to backup
Incremental File backup errors
After 2.2.8-CBT install, Win-10 client won't run, Says directory C: doesn't exist
Server 2.0b not copying files
Server Stop doing backups
Can't access path to backup VolumeShadowCopy
Client disconnected before sending anything - Server 2.0.36 / 2.0.34
Server 2.5.25/Client 2.5.19 (updated)
Client indexing
Since upgrade to Server 2.5.30 the full backup always fails with error writing metadata
LVM snapshot issue
Mac backups fail, CANNOT_OPEN_FILE (3) error
Client crash on Windows 2012 server
UrBackup Client Crashes when trying to backup
File Backups failing for a certain client - "Error writing metadata to file. -1"
Unknown unix metadata version +12
Backup stucks at "Indexing"
Connection Lost
BUG .. CBT client causes "Restart required" EVERY startup (unless all volumes selected)
Client starting backup failed
Server 2.5.20 beta
Getting Error While Backup
UrBackup Server not automatically finding clients
Is there something that needs to be done
'Starting Backup Failed'
Urbackup Server dont find Debian-Client
UrBackup Server 2.1.14 beta/Client 2.1.11 beta
Incremental backup not deleting. I set my incremental backup to maximum 30 but still keep adding. client version 2.3.4
Error removing xattrs of %FILENAME%
Problem with xtrabackup
Can't make backups
Error creating hardlink
Multiple / Random backups being deleted. Retention settings applied not being followed. Critical Issue
CBT Output Buffer Too Small
Server 2.5.19 beta/Client 2.5.14 beta (updated 2x)
URbackup server not adding vm Hyperv client
Webinterface does not have password dialog box
Restore failing for all client
Windows Service Stops
Server 2.2.6/2.2.7 issue
CentOS 5 client compatibility
Backups running every 5 minutes with -1 Bytes
UrBackup Client 2.2.6 not backing up added files during incremental backups
Server 2.5.13 beta/Client 2.5.7 beta
Backing up EFI System Partition failed
Server service stopped and cannot be restarted
Help - Incremental cleanup issue - recent backups deleted
Starting backup failed - unable to start debug log
Prefilebackup and Postfilebackup Scripts Question
Server 2.3.1 beta/Client 2.3.0 beta
Issues Starting New Backup
Need help with a server on a Raspberry Pi 4 B
Clients Backup disappeared over night
Error starting file metadata download thread (Linux server, Win client)
Incremental File Backup breaks after a few backups
File restore fails with permission error
Windows component restore error
Linux Client Imagebackup LVM
UrBackup Server Service Randomly Stopping
File Locked, Client Service Stopped, Process stuck?
Using postgresql_base backup regulary leads to hash errors
Unable to free up space
Client offline: we found UrBackupClient service is getting stopped frequently and as per the event viewer logs UrBackup service KERNELBASE.dll is not running properly
Urbackup Hyper-V Client 2.2.19 does not work with Windows 10 anymore?
Client "UrBackup_Client_Linux_2.5.10_beta.sh" could nt read mbr
Files Backup security permissions ACL
Server 2.5.17 beta/Client 2.5.11 beta (Updated 3x)
Hyper-V - VM's not showing
Disable IPv6 on sever?
File backups fail when connected by ipv6
Server 2.5.5 WIP/Client 2.5.3 WIP
Hyper-V live migrated vms show as new
Urbackup Server crashes with MemoryError
CBT Driver Error
Sparse file backup issue
Server 2.5.14 beta/Client 2.5.8 beta
Server 2.5.9 beta (updated x3)
Backup Options, Groups Not Following Setting(s)
Server 2.5.23/Client 2.5.17
Does full image backup work on windows10?
I think I broke UrBackup
CBT error during Incremental File backup
Server 2.5.22/Client 2.5.16 - Can not create virtual subclients
Restore on Windows Client not Working
Server 2.5.21/Client 2.5.15
Indexing forever - stuck in Indexing Hell
'No paths to backup configured' for Windows Clients
Ever growing backup, unchanged files
Full FIle Backup
Restore MS SQL database does not work
Urbackup Server doesn't start up after updating to 2.5.25
Bug: Backup paths list becomes empty
CBT driver volume monitor problem and race condition
Slow FILE_METADATA loading. Backups Never ends approaching 100%
Client issues: client name + server client settings
What do the icons in the UrBackup Client Actually Mean and Control
Backup interval reseting, wrong format
Slow FILE_METADATA loading. Backups Never ends approaching 100%
Sorry, but the 2.5 settings are a mess
Backing up C drive does not seem to be complete
"ERROR" Creating directory [correct folder name] failed. File exists (errorcode=17)
Archiving Setting
Nightly Cleanup Causes Incomplete Backups of Multiple Drives
Error writing metadata to file. -1 _ File has wrong size. Should=8 is=116
Servers not backing up Async process failure
Any way to delete all backup data but retain clients data and config?
UrBackup Server unhandled std::exception bad allocation after enabling internet mode
Failed Backups: Windows backup component config XML is empty
Remote Silent Install Issues
Urbackup server crash on Linux (segmentation fault)
Error : Backup HAD errors . Deleting partial backup
Error : Backup HAD errors . Deleting partial backup
Urbacking up its internal DB - always 0 byte
Async indexing process not found
Server indexing forever
Unable to take Full File Backup
Client doesn t upodate settings
Permission Problem with restored files
Starting backup failed through server
Backup hung on a file
Infinite backup after upgrade to 2.0
Image Backup Stuck on 99%
Base_dir_lost (7)
Image Backup Stuck on 99%
Not doing full backup because of internet connection
Context menu -> Sorry, something went wrong
Backup fails in the last week
Getting xattr Error while restoring
UrBackup Server Service Randomly Stopping
New Server Setup - Need to Understand Server DR in One Place
Error starting file metadata download thread
Error starting file metadata download thread
Backup of URBackup Databases (Feature Request?)
Urbackup Bus Error database out of space
Global settings ignored with client setting
Backup Error on client system
Server side service randomly stopping ports not listening
Server exit when disk fills up, no warnings or email?
Error in DeviceIoControl during Hyper-V backups
Unbackupable file
Backups being deleted instead of being retained
Error restoring Sql Server database
Server 2.5.22/Client 2.5.16
Sparse file replication size issue
Number of files entry processes
Server 2.5.12 beta/Client 2.5.6 beta
Backup wrong directory