v5.0.1: SABnzbd 5.0.1

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Release Notes - SABnzbd 5.0.1

In this fifth major release of SABnzbd, we included:

• Smarter (and potentially faster) downloads with NNTP Pipelining and Direct Write.
• Reliability gains from a reworked cache and safer processing.
• A significant number of bug fixes and platform updates.

Bug fixes in 5.0.1

• Queued downloads from older versions did not load after updating.

New features in 5.0.0

• Added support for NNTP Pipelining which eliminates idle waiting between
  requests, significantly improving speeds on high-latency connections.
  Read more here: https://sabnzbd.org/wiki/advanced/nntp-pipelining
  New servers will have Articles per request set to 2 by default.
  Existing servers need to be manually changed to use NNTP Pipelining.
• Implemented Direct Write to optimize assembly of downloaded files.
  Read more here: https://sabnzbd.org/wiki/advanced/direct-write
• Post-processing scripts will always be executed, even for failed jobs.
  Make sure to check the status of the job in your scripts!
• Removed Special setting empty_postproc as it is no longer needed.
• Complete redesign of article cache.
• Improved disk speed measurement in Status window.
• Reduced delays between jobs during post-processing.
• Improved handling of disks getting full.
• Diskspace check will now include Category-specific folders.
• If a download only contains .nzb files, the new downloads
  will include the name of the original download.
• No longer show tracebacks in the browser, only in the logs.
• Dropped support for Python 3.8.
• Windows: Added Windows ARM (portable) release.
• Windows and macOS: Added HTML version of the Release Notes.
• Windows and macOS: Updated Python to 3.14.4, Unrar to 7.20,
  par2cmdline-turbo to 1.4 and 7zip to 26.00.

Bug fixes in 5.0.0

• Check before download could get stuck or fail to reject.
• Several stability changes for the core download process.
• If only par2 files were missing, jobs could get incorrectly aborted.
• No error was shown in case NZB upload failed.
• Correct mobile layout if Full Width is enabled.
• Handle passwords that exceed Unrar's password limit.
• Aborted Direct Unpack could result in no files being unpacked.
• Encrypted RAR detection could sometimes fail.
• Unwanted extension check was unreliable on passworded downloads.
• No longer exclusively lock all directory operations.
• Improved handling of non-NFC unicode filenames.
• Sorting of files inside jobs was inconsistent.
• Linux: No longer break test-data in the release package.
• Windows: Tray icon disappears after Explorer restart.
• macOS: Slow to start on some network setups.

Changes to default settings for new installations in 5.0.0

• Default Minimum Free Space for Temporary Download Folder set to 500M.
• Enabled verify_xff_header setting by default.

Upgrade notices

• You can directly upgrade from version 3.0.0 and newer.
• Upgrading from older versions will require performing a Queue repair.
• Downgrading from version 4.2.0 or newer to 3.7.2 or older will require
  performing a Queue repair due to changes in the internal data format.

Known problems and solutions

• Read ISSUES.txt or https://sabnzbd.org/wiki/introduction/known-issues

Code Signing Policy

Windows code signing is provided by SignPath.io using a SignPath Foundation certificate.

About

SABnzbd is an open-source cross-platform binary newsreader.
It simplifies the process of downloading from Usenet dramatically, thanks to its web-based
user interface and advanced built-in post-processing options that automatically verify, repair,
extract and clean up posts downloaded from Usenet.

(c) Copyright 2007-2026 by The SABnzbd-Team (sabnzbd.org)