Bad Gateway is an HTTP status code that indicates that one of the servers obtained an invalid response as a server. Basically, your computer linked to a gateway server or proxy server, but the server failed to receive a valid response on the back-end server which led to the Error 502.

There are a lot of reasons for using Outlook Dark Mode:

1. It puts less strain on the eyes
2. It does not lead to headaches after spending more hours on the screen
3. It helps in less battery usage
4. Helps you to be productive working at night also etc

Using manual methods to convert OST to PST files can be challenging due to several reason such as :
1. Manual process is time consuming
2. It sometimes lead to data loss
3. Limitations of file size
4. File data may get altered
5. Manual methods does not guarantee data safety