My Microsoft wireless mouse keeps losing its connection.

Have you replaced with brand new alkaline batteries?

If it uses a USB dongle: Try a different USB port

If it’s Bluetooth:

Remove the mouse from Bluetooth settings and pair it again.

Turn Bluetooth off/on your device.

If it still fails → it’s not worth repairing; replacing the mouse is the practical fix.

Follow these steps in order to troubleshoot the intermittent connection:

1. Check batteries and power
   • Replace the batteries with new, non‑rechargeable alkaline batteries to rule out low power or bad rechargeable cells.
   • Make sure the batteries are inserted in the correct direction and fit firmly in the compartment.
   • If the device is rechargeable, connect it to its dock or USB charging cable. If the charging light turns red or flashes red after a few seconds:
     • Disconnect from the charger.
     • Turn off the mouse.
     • Remove the batteries, wipe them with a clean, soft cloth, wait 10 seconds, reinsert them, turn the mouse on, and try charging again.
   • If it charges via USB, try a different USB port (preferably on the back of the PC) or a different power outlet if using an AC adapter.
2. Inspect the battery compartment and contacts
   • Open the battery compartment and check for dirt, obstructions, or corrosion; clean if necessary.
   • Confirm there is a solid connection to the battery terminals.
   • If the mouse has a battery detection switch and the battery is slightly small, wrap a thin strip of paper around the battery to add thickness so it reliably triggers the switch.
3. Check the USB receiver and ports
   • Unplug the USB receiver, wait ~10 seconds so Windows unloads the driver, then plug it back in.
   • Try a different USB port on the PC.
   • Bypass USB hubs, port replicators, or KVM switches and plug the receiver directly into a USB port on the computer (preferably on the back for better bandwidth).
4. Check wireless connection
   • Look for a Reset button on the bottom of the mouse and on the USB receiver. Press/reset to re-establish the wireless connection.
   • Ensure there is no dirt blocking the sensor on the bottom of the mouse.

If the mouse works only briefly after battery reseating and then fails again, the most common causes are weak/incorrect batteries, poor contact in the battery compartment, or a marginal USB port/receiver connection. Addressing those points usually stabilizes the connection.

References:

• Your wireless mouse or keyboard does not respond or you receive a “The wireless <device name> signal quality is low” error message
• Mouse and keyboard problems in Windows