Logitech Certificate Error Crashes Mac Apps

Millions of Mac owners who rely on Logitech’s configuration software were left scrambling earlier this week after a critical security certificate expired and prevented key apps from opening (via MacRumors).

The problem, identified on January 6 and widely reported on support forums and social media, made Logitech’s Options+ and G HUB apps unusable on Apple computers, leaving users without access to custom mouse and keyboard settings until a patch was released.

Logitech’s Options+ and G HUB applications are designed to let people tailor the behavior of their peripherals such as remapping buttons, adjusting scroll or gesture settings, creating profiles for specific apps, and controlling RGB lighting on supported devices. Mac users noticed that these apps simply stopped launching, displayed endless loading wheels, or crashed shortly after startup.

The root cause was an expired Apple Developer ID certificate that the company uses to digitally sign its macOS software. These certificates are required by Apple’s security framework to verify that an app is authentic and safe to run. Once the certificate expired, macOS began refusing to load the affected apps, effectively blocking them from running and disabling any customization features that rely on them.

Users took to online communities such as Reddit to share their experiences and seek solutions. Many reported that reinstalling or restarting the apps did not help because the built-in updater and launch processes depended on the same expired certificate.

Logitech acknowledged the issue publicly, describing the lapse in certificate renewal as a mistake and apologizing for the interruption of service. The company quickly prepared updated installers that included a valid certificate so that the apps could run once again on affected macOS versions, which include macOS 13 Ventura through macOS 26 Tahoe.

Because the outage also disabled the automatic update systems inside the apps, users must manually download and install the new installers from Logitech’s support site to resolve the problem.

Importantly, Logitech stressed that none of the custom settings or profiles users had configured were lost during the outage and would return once the updated apps were installed. This offered some relief for people who feared they might need to rebuild complex setups from scratch.

As of now, manual installation of the patch is the only way to restore full functionality to Logitech apps on macOS. Older versions of macOS that have not yet received fixes will be supported with updated certificates in the near future, according to Logitech.