XDR Collectors 1.4.3 (Major)

The XDR Collectors major release for Windows 1.4.3.1686 was released as part of the following releases of Cortex XDR:

• 4.0 on February 16, 2025
• 4.1 on April 27, 2025
• 4.2 on July 20, 2025
• 4.3 on November 9, 2025

The following table describes the changes integrated for this release:

FEATURE/ISSUE	DESCRIPTION
New XDR Collector release versions for supporting different versions of Windows	To provide compatibility to older and newer versions of Windows, Cortex XDR now supports the following XDR Collector major versions: XDRC 1.4.3 (Old line): Supports Windows 8 and Windows Server 2012 R2 versions, including supported older versions. These versions will be maintained in their current state and will only receive critical fixes going forward. This version is based on the existing 1.4.X XDRC line. XDRC 1.5.0 (New line): Supports Windows 10 and above OS versions. These versions will receive all new features and development going forward, including OpenSSL 3+. This version is based on the new 1.5.X XDRC release.
CPATR-25963	An issue with the XDR Collectors checking component tags is now fixed that sometimes caused duplicate logs, unnecessary downloads, and redundant copying operations.
CPATR-27427	An issue with an HTTP header in the XDR Collectors server is now fixed that caused duplicate logs in some cases.