Support End-of-Life Announcement for Mac OS X 10.3, 10.4, and 10.5

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Retrospect 15 for Mac will be the last version of Retrospect for Mac to support Mac OS X versions 10.3, 10.4, and 10.5 as well as Retrospect Client 6.3 for mac and Retrospect Client 9.0 for Mac.

If you would like to protect those versions of Mac OS X with Retrospect 15, please contact our Support team for a production build that continues to include support for those.


Our Engineering team has worked hard to continue supporting old versions of Apple Mac OS X. Every version of Retrospect for Mac through Retrospect 14.6 has supported both the 6.3 client for Mac OS X 10.3 (available in 2003) and Mac OS X 10.4 (available in 2004) protection and the 9.0 client for Mac OS X 10.5 (available in 2006) protection.

With APFS, Apple has moved its file system calls from 32-bit data structures to 64-bit data structures. Our Engineering team has determined that switching Retrospect to using 64-bit data structures only, we can continue to protect Mac OS X versions as earlier as 10.6 while using the latest APIs from Apple.

We started building the foundation for that transition in Retrospect 15 but inadvertently introduced an issue that broke support for both older clients and prevented customers from protecting Mac OS X versions 10.5 and earlier. This issue is resolved in Retrospect 15.1.

When we complete the transition to 64-bit macOS file system data structures, Retrospect will no longer be able to support 10.3, 10.4, and 10.5 with the Retrospect 6.3 Client and Retrospect 9.0 Client.

Last Update: May 23, 2018