How to Reset Logitech K850 Keyboard: Bluetooth & USB Receiver Fix

Quick Method: Reset Logitech K850 in 30 Seconds

If your Logitech K850 keyboard is not working, not connecting, or experiencing Bluetooth problems, try the following reset procedure. Allow extra time if you need to pair the keyboard again.

Quick Reset Steps:

1. Turn the Logitech K850 keyboard off and then back on.
2. Press and release Esc + O.
3. Press and release Esc + O again.
4. Press and release Esc + B.
5. If the Easy-Switch lights begin blinking, turn the keyboard off and back on to complete the procedure.
6. Reconnect the keyboard using Bluetooth or its Logitech Unifying receiver.

This key sequence is reported by users as a way to reset the K850’s connection state, but it is not documented in the official K850 getting-started guide. If the lights do not respond, use the pairing steps below instead.

Still not working? Continue with the troubleshooting instructions for Bluetooth pairing, USB receiver problems, power issues, and an unresponsive keyboard.

Step-by-Step: How to Reset Your Logitech K850 Keyboard

Step 1: Turn the Keyboard Off

Use the power switch on the Logitech K850 to turn the keyboard off. Turn it back on before trying the reported reset sequence.

You generally do not need to remove the batteries for a normal power cycle. If the keyboard does not power on, check the batteries and their placement before continuing.

Step 2: Enter the K850 Reset Sequence

The following sequence has been reported by K850 users as a way to reset the keyboard’s connection state:

Esc + O → release → Esc + O → release → Esc + B

Press and release each combination separately. Do not hold all the keys down together.

Watch the Easy-Switch indicators after entering the sequence. If the lights do not respond, do not assume the reset succeeded. Skip to the Bluetooth pairing instructions or troubleshoot the keyboard’s power and connection.

Step 3: Complete the Reset

If the Easy-Switch lights respond as described, turn the keyboard off and then back on.

You may need to reconnect the keyboard to your computer. This procedure should not be described as a guaranteed factory reset; the available official K850 documentation does not confirm this key sequence as a factory-reset method.

Step 4: Reconnect the Keyboard

Choose the connection method you normally use.

For Bluetooth:

1. Open Bluetooth settings on your Windows PC or Mac.
2. If the old K850 entry is still present but no longer works, remove or forget that device.
3. Press and hold one Easy-Switch button (1, 2, or 3) for about three seconds, until its indicator flashes rapidly.
4. Select the Logitech K850 from your computer’s available Bluetooth devices and follow the pairing instructions.

Use the channel you want to assign to that computer. Holding an Easy-Switch button for three seconds puts the keyboard into pairing mode; it is not the same as resetting the entire keyboard.

For the USB receiver:

1. Connect the Logitech Unifying receiver to your computer.
2. Check that the receiver is detected and try another USB port if necessary.
3. If the keyboard does not reconnect automatically, use Logitech’s supported Unifying pairing procedure to reconnect it.

The K850 supports Bluetooth and a compatible Logitech Unifying receiver. The steps required to reconnect it depend on which connection method you use.

Step 5: Test the Keyboard

Open a text editor or another text field and type a few words.

Check that:

• The keys respond when pressed.
• The keyboard remains connected.
• The correct Easy-Switch channel is selected.
• The keyboard does not repeatedly disconnect.

If the keyboard connects but certain keys do not respond, use our Keyboard Tester to check individual keys.

If the K850 still isn’t working, continue to the troubleshooting section below for Bluetooth, USB receiver, battery, and connection problems.

Logitech’s official K850 setup guide and Easy-Switch pairing instructions support the pairing guidance above. The Esc + O sequence is supported by user reports, rather than the official K850 setup guide.

Logitech K850 Keyboard Not Working? Try These Fixes

If your Logitech K850 keyboard is not working, not connecting, or not responding, check the batteries, Easy-Switch channel, and wireless connection before replacing the keyboard. The right fix depends on whether you’re experiencing a Bluetooth problem, a USB receiver issue, or an unresponsive keyboard.

If you’re experiencing a more general issue, see our guide to Why Is My Keyboard Not Working? for additional troubleshooting steps.

Logitech K850 Not Connecting to Bluetooth

If your Logitech K850 won’t connect, it may be using the wrong Easy-Switch channel or an outdated Bluetooth pairing.

1. Make sure Bluetooth is enabled on your computer.
2. Select the Easy-Switch channel (1, 2, or 3) assigned to that computer.
3. If the keyboard isn’t listed or won’t connect, remove its old entry from your computer’s Bluetooth settings.
4. Press and hold the selected Easy-Switch button for about three seconds, until its indicator flashes rapidly.
5. Select Logitech K850 from the available Bluetooth devices and follow the pairing instructions.

If the keyboard still won’t connect, check the Bluetooth settings and restart your computer before trying again.

Logitech K850 Keyboard Not Typing or Responding

If the K850 appears connected but doesn’t type, check its power and connection first.

• Make sure the keyboard is switched on.
• Check or replace the two AAA batteries.
• Confirm that the correct Easy-Switch channel is selected.
• Turn the keyboard off and back on.
• Try reconnecting through Bluetooth or the USB receiver.

If only certain keys fail to respond, use our Keyboard Tester to check whether individual keys register.

For other devices experiencing similar symptoms, see our guide to Wireless Keyboard Not Working.

Logitech K850 Not Turning On

If your K850 won’t power on, start with the batteries and power switch.

• Turn the keyboard off and back on.
• Check that both AAA batteries are installed correctly.
• Replace the batteries with fresh ones if necessary.
• Check whether any indicator lights respond.

If the keyboard remains unresponsive with fresh batteries, the problem may involve the power switch or internal hardware rather than Bluetooth pairing.

Logitech K850 Keeps Disconnecting

Repeated disconnections can result from low batteries, wireless interference, or an unstable connection.

• Replace the batteries if they may be low.
• Move the keyboard closer to your computer.
• Keep the keyboard away from potential sources of wireless interference.
• If using Bluetooth, remove the old pairing and reconnect the keyboard.
• If using the USB receiver, try another USB port.

Test the keyboard again after each change so you can identify which fix resolves the problem.

Logitech K850 Bluetooth Pairing Not Working

If the keyboard won’t pair, make sure it is in pairing mode rather than simply switched on.

1. Select the Easy-Switch channel you want to use.
2. Press and hold its button for about three seconds, until the indicator flashes rapidly.
3. Open your computer’s Bluetooth settings.
4. If an old K850 entry is causing problems, remove it.
5. Search for available devices and select Logitech K850.

If pairing still fails, restart Bluetooth on your computer and repeat the process. Make sure the selected channel is the one you intend to pair.

Logitech K850 USB Receiver Not Working

If you connect the keyboard using the Logitech Unifying receiver, troubleshoot the USB connection separately from Bluetooth.

• Connect the receiver directly to your computer instead of a USB hub.
• Try another USB port.
• Check whether the computer recognizes the receiver.
• Make sure the keyboard is switched on and the correct connection is selected.
• If necessary, use Logitech’s supported Unifying pairing procedure to reconnect the keyboard.

Changing USB ports can help identify a connection problem, but it won’t resolve every receiver or pairing fault.

Logitech K850 Connection Issues on Windows or macOS

Sometimes the problem comes from the computer’s Bluetooth or USB settings rather than the keyboard itself.

On Windows:

• Turn Bluetooth off and back on if you’re using Bluetooth.
• Remove the old K850 pairing and reconnect the keyboard.
• Check for Bluetooth driver or USB connection problems if the issue persists.

On macOS:

• Check that Bluetooth is enabled.
• Remove the old K850 pairing if the connection is failing.
• Put the keyboard into pairing mode and reconnect it.
• If you’re using the USB receiver, check the USB connection separately.

If the K850 works on another computer, investigate the original computer’s connection settings before assuming the keyboard is faulty.

For additional device-specific help, see our guides to Laptop Keyboard Not Working when those issues match your symptoms.

If you’re having trouble with arrow keys specifically in Excel, our guide to Arrow Keys Not Working in Excel covers spreadsheet-specific causes.

If dirt or debris is affecting the keys, follow our guide on how to clean a keyboard safely.

How to Put Logitech K850 in Pairing Mode

To put your Logitech K850 keyboard into Bluetooth pairing mode:

1. Turn on the keyboard.
2. Press and hold the Easy-Switch button (1, 2, or 3) for about 3 seconds.
3. Release the button when its indicator light starts blinking rapidly.

The blinking light indicates that the selected channel is discoverable and ready to pair with a Bluetooth device. Each Easy-Switch button can be assigned to a different device. Logitech’s pairing instructions confirm this procedure.

If the light does not blink, check that the keyboard is switched on and has working batteries before trying again.

How to Connect Logitech K850 via Bluetooth

Once the Easy-Switch indicator is blinking rapidly, connect the keyboard to your computer:

1. Open Bluetooth settings on your Windows PC or Mac.
2. Make sure Bluetooth is turned on.
3. Find Logitech K850 in the list of available devices.
4. Select the keyboard and follow the on-screen instructions.
5. If prompted, type the displayed pairing code on the K850 and press Enter.
6. Open a text field and test the keyboard.

The Logitech K850 supports up to three paired devices through its Easy-Switch buttons. Press the corresponding button to switch between previously paired devices.

If Logitech K850 doesn’t appear: Make sure the selected channel is in pairing mode. If an old pairing is causing problems, remove the existing K850 entry from your device’s Bluetooth settings and try pairing again.

Logitech K850 Keyboard Lights and Blinking Indicators

The Logitech K850’s Easy-Switch lights help you identify the selected device channel and determine when the keyboard is ready to pair.

What Do the 1, 2, and 3 Lights Mean?

The Easy-Switch buttons labeled 1, 2, and 3 represent three device channels. Each channel can be paired with a different compatible computer or device.

• Light blinking rapidly: The selected channel is generally in Bluetooth pairing mode.
• Light briefly blinking when switching: The keyboard is changing channels or indicating its selection.
• Light becoming steady after pairing: The connection has been established.

To switch between paired devices, press the corresponding Easy-Switch button. To pair a new device, press and hold the desired button for about three seconds until its indicator blinks rapidly.

Why Is My Logitech K850 Light Blinking?

A rapidly blinking Easy-Switch indicator usually means the selected channel is ready for Bluetooth pairing. If the light keeps blinking and the keyboard does not connect, try these steps:

1. Open your computer’s Bluetooth settings.
2. Check that Logitech K850 appears in the available devices list.
3. Select the correct Easy-Switch channel.
4. If an old pairing is causing problems, remove it and pair the keyboard again.
5. If the keyboard still won’t connect, review the troubleshooting steps in the sections above.

Tip: A blinking light does not necessarily mean the keyboard is faulty. First, check whether it is waiting for a Bluetooth connection.

Advanced Fixes for Logitech K850 Connection Problems

If your Logitech K850 still won’t connect, keeps disconnecting, or isn’t detected, try these additional troubleshooting steps.

• Replace the batteries: Weak batteries can cause power, connection, and responsiveness problems.
• Restart Bluetooth: Turn Bluetooth off, wait a few seconds, and turn it back on.
• Remove the old pairing: Forget or remove Logitech K850 from your computer’s Bluetooth settings, then pair it again.
• Try another Easy-Switch channel: Select a different channel (1, 2, or 3) and put it into pairing mode before reconnecting.
• Check the USB receiver: If you’re using the Logitech Unifying receiver, try another USB port and connect it directly to the computer instead of a hub.
• Reduce wireless interference: Move the keyboard closer to the computer or receiver and away from potential sources of wireless interference.
• Restart your computer: Restarting Windows or macOS can resolve temporary Bluetooth or USB connection problems.
• Check Bluetooth settings: Make sure Bluetooth is enabled and your computer can detect other Bluetooth devices.

If your K850 still doesn’t work, repeat the relevant connection steps above. For Bluetooth, put the keyboard into pairing mode and add it as a new device. If you’re using the USB receiver, troubleshoot the receiver connection separately.

For more general troubleshooting, see our guide to why a keyboard is not working.

Still not working? The issue could involve the batteries, USB receiver, computer’s Bluetooth connection, or the keyboard hardware. Check Logitech’s official support resources for further device-specific help.

Frequently Asked Questions About Logitech K850

How do I reset the Logitech K850 keyboard?

Logitech’s official K850 documentation does not confirm a universal factory-reset key sequence. Start by turning the keyboard off and on, checking the batteries, and reconnecting it through Bluetooth or the USB receiver. If you find a reset sequence online, treat it as an unverified user-reported method.

Why is my Logitech K850 keyboard not working or unresponsive?

Check the power switch, batteries, selected Easy-Switch channel, and wireless connection. If the keyboard remains unresponsive, reconnect it through Bluetooth or check the USB receiver.

How do I fix a Logitech K850 keyboard that is not connecting?

Make sure Bluetooth is enabled, select the correct Easy-Switch channel, and remove the old K850 pairing from your device. Then put the keyboard into pairing mode and connect it again.

How do I put the Logitech K850 keyboard into pairing mode?

Turn on the keyboard and press and hold the desired Easy-Switch button (1, 2, or 3) for about three seconds, until its LED blinks rapidly. Then open your device’s Bluetooth settings and select the keyboard.

How do I connect my Logitech K850 via Bluetooth?

Put the K850 into pairing mode, open your device’s Bluetooth settings, select Logitech K850, and follow any on-screen instructions. The Easy-Switch buttons let you pair the keyboard with up to three devices and switch between them.

Why is my Logitech K850 keyboard not typing?

Check the batteries, power switch, and selected Easy-Switch channel. If the keyboard connects but does not type, remove the existing connection and pair it again. You can also test the keys with an online keyboard tester.

Why is my Logitech K850 keyboard not turning on?

Make sure the power switch is on and check the two AAA batteries. Replace them if necessary, making sure they are installed in the correct direction. If the keyboard still does not respond, check Logitech’s support resources.

Why does my Logitech K850 keep disconnecting?

Frequent disconnections may be caused by weak batteries, wireless interference, or an unstable Bluetooth or USB receiver connection. Replace the batteries if needed, move the keyboard closer to the computer, and reconnect it.