The current version is 4.50.121 , released on May 12, 2026. Previous versions are no longer supported as of May 18, 2026.
Slack enforces a rolling lifecycle for older application builds. Versions . Desktop instances running these older builds will no longer receive security updates, bug fixes, or stability patches. Furthermore, Slack completely retired its 32-bit application for Windows; all modern versions require a 64-bit operating system. How to Check and Update Your Slack Version slack current version
To get the most out of Slack, follow these best practices: The current version is 4