{"id":50654,"date":"2026-01-07T15:43:46","date_gmt":"2026-01-07T20:43:46","guid":{"rendered":"https:\/\/mjtsai.com\/blog\/?p=50654"},"modified":"2026-02-09T13:47:21","modified_gmt":"2026-02-09T18:47:21","slug":"logitech-certificate-expiration-breaks-app","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2026\/01\/07\/logitech-certificate-expiration-breaks-app\/","title":{"rendered":"Logitech Certificate Expiration Breaks App"},"content":{"rendered":"

Tim Hardwick<\/a> (Slashdot<\/a>, Hacker<\/a> News<\/a>):<\/p>\n

\n

Logitech users on macOS found themselves locked out of their mouse customizations yesterday after the company let a security certificate expire, breaking both its Logi Options+ and G HUB configuration apps.<\/p>\n

Logitech devices like its MX Master series mice and MX Keys keyboards stopped working properly as a result of the oversight, with users unable to access their custom scrolling setup, button mappings, and gestures. It wasn’t long before the Logitech subreddit was awash with frustrated reports<\/a> as people discovered their configured peripherals had suddenly reverted to default settings.<\/p>\n<\/blockquote>\n\n

Jeff Johnson<\/a>:<\/p>\n

\n

This article is technically inaccurate, sigh.<\/p>\n

All Developer ID code signing certificates expire eventually, and macOS does NOT prevent software with an expired certificate from running, otherwise all of your older apps would be dead now.<\/p>\n

Logitech was doing some ADDITIONAL validation of their own design, and that’s where the problem occurred.<\/p>\n<\/blockquote>\n\n

Logitech<\/a>:<\/p>\n

\n

Because the certificate also affected the in‑app updater, you will need to manually download and install the updated version of the app. Please do not uninstall the app and follow the steps below.<\/p>\n

[…]<\/p>\n

The certificate that expired is used to secure inter-process communications and the expiration resulted in the software not being able to start successfully.<\/p>\n<\/blockquote>\n\n

Previously:<\/p>\n