- Make sure that your Facebook Messenger is enabled on your computer.
- If you’re not using Facebook Messenger, try signing in with your email address and password.
- If you’re using Facebook Messenger, make sure that you have the latest version of the app.
- Try refreshing your page and message history if you’ve been using Facebook Messenger for a while and haven’t received any notifications about new messages or updates.
Windows 10 Facebook Messenger App Not Working Fix – 
How To Fix Facebook Messenger Automatically Open Problem Windows – 2022
Messenger is not compatible with certain phone models.
To update Facebook Messenger on your PC, you can use the following steps:
Open Facebook Messenger and click the three lines in the top left corner of the screen.
On the left, you will see a list of options. Choose Update Now and follow the prompts to install the update.
Once the update has been installed, open Facebook Messenger and click the three lines in the top left corner of the screen again.
There are a few possible reasons why your messages may not be working. One reason is that your phone is not compatible with the messaging service. Another reason could be that there is some kind of issue with your phone or network. If you have any other questions or concerns, please reach out to our customer service team at 1-800-123-4567 and we will be more than happy to help.
There are a few ways to get Messenger to work. You can try using the Messenger app on your phone or computer, or you can use a third-party app like Facebook Messenger.
To restart Messenger, open the app and sign in. Then tap the three lines in the top left corner of the main screen and select “Restart Messenger.