Arq

Haystack Software LLC·HaystackSoftware.Arq

A backup software for your Mac or Windows PC.

winget install --id HaystackSoftware.Arq --exact --source winget

Latest 7.48.0.0·September 3, 2026

Release Notes

Improvements

  • Improved the way cached data is managed, reducing the amount of cached data stored over time.
  • The Budget/Stored Size row in the main window now shows the current stored size, refreshed while a backup is running and again when it finishes.
  • Google Cloud Storage: Arq now refreshes its access token before it expires instead of waiting for a request to fail. A token that expired in the middle of a large upload previously caused the whole upload to be retried, which could be time-consuming.
  • Arq Pro: computers managed by an Arq Pro group no longer show the "update available" notification when auto-update is off, since updates are controlled from the Arq Pro console. Bug Fixes
  • Fixed the Arq7Agent service becoming unresponsive to the Service Control Manager (Windows event 7011) during a Remote Desktop logon. Arq7Agent asked Windows for device-arrival notifications for every device interface class, so RDP device redirection (the client's drives, printers, smart cards and ports) delivered a burst of notifications Arq had no use for. Arq now registers for volume notifications only; removable-drive detection is unchanged.
  • Fixed a failed read of the previous backup's directory data being reported as a backup error. That skipped thinning and budget enforcement and forced a full rescan on the next run, which could make a transient failure repeat indefinitely. Arq now logs the failure to the activity log and backs the directory up as new.
  • Fixed a race at the end of a backup where the pass that computes the progress-bar totals could still be reading backup records that retention thinning, budget enforcement, or unreferenced-data removal had just deleted. This also fixes the progress bar dropping to zero during cleanup on plans whose scan hadn't finished.
  • Fixed the emailed backup report showing 0 for scanned bytes and files when the scan-ahead pass hadn't finished.
  • Fixed a backup plan's "last backed up" date being updated by an aborted backup, which could silence the "no backups in N days" alert.
  • Fixed a backup plan's "last backed up" date never being updated when every backup was a back-up-and-validate run. This affected plans backed up to folder, SFTP, or pCloud destinations less often than every 30 days, such as rotating removable disks, and caused false "no backups in N days" alerts.
  • Fixed retry loops for Google Cloud Storage, Google token refresh, OneDrive, and pCloud that could retry a failing request indefinitely on certain network errors. Arq now gives up after a bounded time, while still waiting out genuine network outages.

Installer type: wix

x86—1F35C3E29E9213D838B28CBD391B23C7FC0DC3E564E3FBFE52A517E8B64B0A92

Details

Homepage
https://arqbackup.com/download/
License
Proprietary
Publisher
Haystack Software LLC
Privacy Policy
https://arqbackup.com/privacy/
Copyright
Copyight © 2009-2026 Haystack Software LLC. All rights reserved.

Tags

backup

Older versions (24)

7.47.3.0
x86—665E7AA4BB3DC863CB16370D0F1F8B39BE5418BCF7D179ADF94619B1D3DB96E4
7.47.1.0
x86—BB87C7EA4BE3D855F289363B7DEF501FAFB56DF79993A6FFF35E4445A8CD3D0B
7.46.0.0
x86—24B14580565D34AC1E5AA0DA3666955BE0B60D4DFD6653CCF906067F97CEC7CE
7.45.0.0
x86—B08729C2F87E250A83D07325C90BBCBA57131875AB5D5F142C0CD1E3FED37897
7.44.1.0
x86—AC959AE80F1DDB11A7206851FEFCD678BAFA8283B1EB19C95055A130AB2DEEAE
7.44.0.0
x86—6131BEE49E4425CC9EFEDDFF1C13D315D274E77792D789F738E01FFA93684C6B
7.43.0.0
x86—4745B67B62BB353B42942DCE8AEC210D6A198DCD884906CD462E39EA7857AB21
7.42.0.0
x86—7376F6216ED262DFE745F992EC1A564D779270A1E806C2CA1A29F0F855C15A0C
7.40.1.0
x86—2C10D3AD7375A29FA1E916DCA88C6329E14D9D042D038225EEDB9FB7A36C56C9
7.40.0.0
x86—39C6629F2F623A7AFC8DB700F3E40238AD80A3E21F4C88BB3F67E569FA157C0D
7.39.0.0
x86—613A5CBE2E0EC072C9CB00D06B954E28D716FDFCD0859AABE3116FB4E0F61365
7.38.6.0
x86—3EF84EE70385E10A7939BEB03407F2E74689B84C2363BB4BC042FAE808415F95
7.38.5.0
x86—4421BDEB38D5B1324036021C849053C8CAAAD5E46A3A81D65BCD80ABE5A601EF
7.38.4.0
x86—FCE1E938AFE195E54315A508A1A63A2B288EFFFB93ACED5C8DF4F9092B244701
7.38.2.0
x86—C9974E1CDE0B91C77A240C5FC1679E534D7B6063723B381F5829BA83BA2A3FE2
7.38.1.0
x86—15A57DC6E09A95D6EC6095DBF1430371291D0E282494D6818A07905B95283CB5
7.38.0.0
x86—332E5388DCC0D291E48C2B190D5C794C21742F2950F1698BD579E6867AB43F0F
7.36.2.0
x86—C7AE9178EA452709D77EB2736B69F396066CC528FB0FAD23A1744F6CC1D89000
7.36.0.0
x86—FBC9A5FF88FE6465F799B28B82EF4FE4855BA05C45FFE2B78C2A863251132B95
7.35.1.0
x86—A8D30B344ED241DE7299FDC2949AA284D1C98E9BCCD0261DC7DCA1DA417B24B6
7.35.0.0
x86—41A9BB97B6993B2EE0C5DA7F4C5FDFA166373CDBB53AC7912B19AA034B848D01
7.33.1.0
x86—C40236F5E7B64D3D818250FB60642EEA61BB0387587010036811FAE922EDDB23
7.33.0.0
x86—621A0D540B93B5763B9E7E3BA8F914EBB6B0B4DE6794D4D47A9066253DFD7F89
7.32.0.0
x86—B20E2C288F284082870BC9D9DA6F27F8320334BE96C9D5C18F5AE25304751297