Gmail is the most popular email app used worldwide by users at home as well as at the office. However, users also face some issues while working on this app. There can be multiple answers to 'Why is my Gmail not working?'. A very common reason is an unstable or poor internet connection. An outdated version of the app can cause the issue. An outdated or incompatible browser will also cause this problem. The browser extensions may hamper the activity of Gmail. The browser history, cache, or cookies take up extra storage and result in such an issue. A hardware issue with your device can often result in this. Sometimes, there is a problem with the Gmail server itself.