Bug: Logi Options+ / Logi Web Connect – Timeout when pairing MX Master 4 to second Bolt receiver on macOS

[MarKie0815]

Summary

When attempting to pair the MX Master 4 to a second Logi Bolt receiver using Logi Options+ or Logi Web Connect on macOS, the pairing process consistently fails with a timeout error, even when the mouse is actively in pairing mode (LED blinking rapidly).

Environment

• Device: Logitech MX Master 4
• OS: macOS (latest)
• Software: Logi Options+ (latest version)
• Also tested: Logi Web Connect (logiwebconnect.com) in Safari and Chrome
• Setup: Two computers, each with a separate Logi Bolt receiver. Mouse already paired to Receiver 1 (Channel 1). Attempting to pair to Receiver 2 (Channel 2).

Steps to Reproduce

1. Mouse is already paired to Computer 1 via Bolt receiver (Channel 1).
2. On Computer 2 (with second Bolt receiver), open Logi Options+.
3. Click "Add Device" → select "Bolt Receiver".
4. On the MX Master 4, switch to Channel 2 (not yet paired) – mouse enters pairing mode automatically, LED blinks rapidly.
5. Logi Options+ prompts to restart the device or perform an action.
6. After the restart/action, the mouse automatically switches back to Channel 1.
7. Logi Options+ reports a timeout error.

Also tested: Logi Web Connect shows the same timeout. Reversing the order does not help.

Expected Behavior

Logi Options+ should detect the mouse in pairing mode and complete pairing without requiring a device restart that interrupts pairing mode.

Actual Behavior

Software prompts an interaction that causes the mouse to exit pairing mode — race condition between software and hardware, consistent timeout.

Root Cause (suspected)

Pairing UI requires user confirmation at the exact moment the mouse is in pairing mode. The delay causes the mouse to time out or switch channels.

Fix suggestions:

• Begin scanning before prompting for confirmation, OR
• Extend the detection window after confirmation

Workaround

None. Bluetooth works as alternative but is not preferred in Bolt-only setups.

Additional Notes

The standalone Logi Bolt App was discontinued and merged into Logi Options+. This regression may have been introduced during that migration.