UrBackup Server

UrBackup·UrBackup.UrBackup.Server

UrBackup is an easy to setup Open Source client/server backup system, that through a combination of image and file backups accomplishes both data safety and a fast restoration time.

UrBackup is an easy to setup Open Source client/server backup system, that through a combination of image and file backups accomplishes both data safety and a fast restoration time. File and image backups are made while the system is running without interrupting current processes. UrBackup also continuously watches folders you want backed up in order to quickly find differences to previous backups. Because of that, incremental file backups are really fast. Your files can be restored through the web interface, via the client or the Windows Explorer while the backups of drive volumes can be restored with a bootable USB-Stick (bare metal restore). A web interface makes setting up your own backup server really easy. For a quick impression please look at the screenshots here. Currently there are over 21,000 running UrBackup server instances (with auto-update enabled) with some instances having hundreds of active clients.

winget install --id UrBackup.UrBackup.Server --exact --source winget

Latest 2.5.38·August 30, 2026

Release Notes
  • Only copy hash potion of old chunkhash file on failure. This fixes incremental partial backup failures when downloading a script with indeterminate size is interrupted
  • Fix issue with too small sparse extents causing patch failures
  • Prevent ignoring permissions when restoring files via tokens (reported by Valentino Paulon)
  • Add optional proof of work DoS mitigation to Internet authentication
  • Limit max PBKDF2 iterations performed on server fixing a DoS issue (reported by Matheus)
  • Timeout connection after 30s in initial state when authenticating Internet connections fixing a DoS issue (reported by Andrew Elmore)
  • Add settings to allow a client to restore all clients and a setting to disable client rename detection
  • Reset allow_restore_clients when updating virtual clients if necessary, making the server setting allowing all clients to restore apply without server restart
  • Don’t take image backup interval into account when image backups are disabled
  • Improve error handling when hashing patch
  • Only startup one virtual client at a time, not all at the same time
  • Remove hash threads beta setting
  • Add setting to limit max number of simultaneous backups per client group
  • Increase send MBR connect timeout fixing issue when this takes longer than 10s
  • Improve logging for send MBR issues

Installer types: nullsoft, wix

x86—nullsoftB381551A3CB46E29064319F17E134A0786B1073F61004C68497E954998C51086
x64—nullsoftB381551A3CB46E29064319F17E134A0786B1073F61004C68497E954998C51086
x64—wixD1C3CADFD27D4114090496F646726E532AA1188A1FEF1E613421449FA5167361

Details

Homepage
https://www.urbackup.org/download.html
License
AGPL-3.0-or-later
Publisher
UrBackup
Support
https://www.urbackup.org/community.html
Copyright
© 2011-2026 Martin Raiber

Tags

backup

Older versions (6)

2.5.37
x86—nullsoft26430386982B4192419ED6F67BDA41C2F032EA6EB934CCDA6D98FE3545E12006
x64—nullsoft26430386982B4192419ED6F67BDA41C2F032EA6EB934CCDA6D98FE3545E12006
x64—wixCCAA92E28796FD8D5F4C3683C6EE065A33E937C591A02FC4A0A3CC0ED0E77C94
2.5.36
x86—nullsoft95DDD31AC08D1CD32686EE65BA7179729837D142C0A0E81746D5146CDE2C3C74
x64—nullsoft95DDD31AC08D1CD32686EE65BA7179729837D142C0A0E81746D5146CDE2C3C74
x64—wix25E2F82EECF6234D6D96B0B28E747E9C6A4BBCE7D1B7495E7864464FCE7E2BE5
2.5.35
x86—nullsoft40AC12B745774A7B9CFD3DDA4D3C82C397A6F505542E50A948FCCF68499E7EAA
x64—nullsoft40AC12B745774A7B9CFD3DDA4D3C82C397A6F505542E50A948FCCF68499E7EAA
x64—wix9837F531706A476EDD1F50408098BC82D6E1CCD23A94F82E83F78DD3D78E23E1
2.5.34
x86—nullsoft703E0D887C02879B18DCEBEF9D07DDEB40B63964DB25927A5C631D6B42AED07E
x64—nullsoft703E0D887C02879B18DCEBEF9D07DDEB40B63964DB25927A5C631D6B42AED07E
x64—wix037EB1C282125A324868CE495B197C2D18C3BFE741DD5828B1D032A0166BEC66
2.5.33
x86—nullsoft99DA16119440C084E009526C9351220EFFCFAB44BD45C0DF89F5211E0BF3C441
x64—nullsoft99DA16119440C084E009526C9351220EFFCFAB44BD45C0DF89F5211E0BF3C441
x64—wixD28ED50D980F6CB2B57669DA53DD56836620E662D0FC463EFD2D770822DDAE25
2.5.31
x86—949694AF979BA06731D0361D7F567AB89676E400309922572DEAD1A13F6581FD