If your Logitech mouse or keyboard suddenly stopped working properly on your Mac this week, you're not alone. In what the company calls an "inexcusable mistake," Logitech allowed a critical security certificate to expire, rendering its Options+ and G HUB applications completely non-functional on macOS.

What Happened?

Starting January 6, 2026, Mac users worldwide began reporting that their Logitech peripherals had inexplicably lost functionality. Custom button mappings vanished, scroll wheel configurations reset to defaults, and productivity-enhancing gestures simply stopped working. The culprit? An expired Apple Developer ID certificate that reached its expiration timestamp on January 6, 2026, at 20:39:41 GMT.

The Developer ID certificate serves as macOS's digital signature verification system. When Logitech's certificate lapsed, Apple's operating system refused to run the company's software, treating it as potentially untrustworthy code. For many users, this meant endless loading screens, boot loops, or apps that simply wouldn't launch at all.

Why This Matters

This isn't just an inconvenience – it's a significant operational failure that highlights the dependencies modern peripherals have on companion software. Unlike traditional mice and keyboards that store configurations onboard, many of Logitech's premium devices like the MX Master series and MX Keys keyboards require the Options+ application to access their advanced features.

When the certificate expired, users lost:

  • Custom button mappings and gestures
  • Application-specific profiles
  • Scroll wheel customization
  • Smart Actions and productivity workflows
  • DPI and sensitivity adjustments (for gaming peripherals)

The irony is particularly sharp: the expired certificate also disabled the apps' built-in updaters, meaning Logitech couldn't push an automatic fix to users even after developing one.

The Official Fix

Logitech has acknowledged the issue and released manual patch installers that restore functionality. The good news is that your settings, customizations, and device profiles remain intact throughout the process.

For Logi Options+ Users:

  1. Download the updated patch installer from Logitech's official support page
  2. Double-click the downloaded file
  3. The installer will automatically close and Options+ will launch
  4. Your devices, settings, and customizations should be fully restored

For G HUB Users:

  1. Download the updated G HUB installer from the same support page
  2. Double-click the downloaded patch installer
  3. When the "software already exists" message appears, exit the installer
  4. Launch G HUB normally

The fix currently supports macOS Tahoe (26), Sequoia (15), Sonoma (14), and Ventura (13). Logitech states that updates for older macOS versions will arrive "at a later time."

Temporary Workarounds (If Needed)

Before the official patch was released, users discovered several workarounds, though these came with drawbacks:

Date Rollback Method: Changing your Mac's system date to January 5 or earlier tricks macOS into accepting the expired certificate. However, this breaks SSL connections, iCloud syncing, and other time-dependent services.

Older Version Installation: Some users successfully installed version 1.60.495862 through Homebrew after completely uninstalling the current build. This requires using tools like AppCleaner to remove all Logitech files from Library folders.

Important: These workarounds are no longer necessary with the official patch available, and using them can create additional system issues.

Why This Happened

Certificate expirations like this typically occur due to organizational oversights. Security certificates need renewal every few years, and the responsibility often falls to individual team members. When that person leaves the company or the renewal isn't properly documented in shared systems, the certificate quietly expires.

A Logitech representative acknowledged on Reddit: "We dropped the ball here. This is an inexcusable mistake. We're extremely sorry for the inconvenience caused."

Industry professionals who commented on the situation noted this is an all-too-common scenario in software development. One software consultant shared: "This happens all the time. We actually track certificate expirations even after we're done with our work, and will notify clients years later so that they can be sure to update them before they expire."

What You Should Know

  • Windows users are unaffected: This issue only impacts macOS due to Apple's certificate validation requirements
  • Your settings are safe: Despite the app failure, all your customizations, profiles, and device configurations remain intact
  • No version change: The patch doesn't change the app version number – it simply re-signs the existing software with a valid certificate
  • Offline installers affected too: Even users who rely on offline enterprise deployments need the updated installer

The Bigger Picture

This incident raises important questions about the increasing dependence on companion software for hardware functionality. Traditional input devices worked independently of any software, but modern premium peripherals require persistent app connections to maintain their advanced features.

For enterprise users managing Logitech device fleets, this outage highlighted a vulnerability in deployment strategies. IT administrators who rely on mass deployment tools needed to manually update and redistribute the patched installers across their organizations.

Moving Forward

If you're a Logitech device owner on macOS, your immediate action items are straightforward:

  1. Download and install the official patch from Logitech's support page
  2. Verify your custom settings and profiles are working correctly
  3. Consider bookmarking Logitech's support page for future reference

For IT professionals managing Logitech devices, this serves as a reminder to:

  • Maintain shared calendars for certificate renewals
  • Document critical administrative tasks that extend beyond individual team members
  • Consider notification systems for approaching certificate expirations
  • Test disaster recovery procedures for sudden software failures

Final Thoughts

While certificate expirations are embarrassing for any company, Logitech's rapid acknowledgment and transparent communication deserve recognition. The company didn't deflect blame or minimize the impact – they owned the mistake and provided a clear fix.

For affected users, the disruption was real and frustrating. Many lost productivity on what should have been straightforward work days. But the swift response and preservation of user settings demonstrates that Logitech took the situation seriously.

If you haven't already applied the patch, do so now. Your mouse buttons will thank you.

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