To enable desktop notifications for Gmail on your Windows 10 PC, you need to perform the following steps:-

Step 1. Open your web browser and log into your Gmail account.

Step 2. Click on the Settings gear icon on the top right corner of your account and then click See all settings.

Step 3. Click the General tab and then scroll down under this tab to look for the option, Desktop notifications. You will find two options here: New mail notifications On and Important mail notifications On. If you select the first option, you will receive desktop notifications for all the emails. But, if you select the second option, you will receive desktop notifications only for the emails marked as important. Select either of the options according to your choice. After selecting the option of your choice, click on the link “Click here to enable desktop notifications for Gmail.”

Step 4. Once you click the link, you will see a pop-up window asking you to allow Gmail to send email notifications, click Allow.

Step 5. Now, scroll down and click on the Save Changes button.

After performing the above steps, you should receive a desktop notification for new Gmail emails. If you are unable to receive the desktop notifications after completing the above steps, you need to do a few more steps.