Exporting Error

As already mentioned, if you provide more detail to what's going wrong, it would be easier for others to help. Give the error you're getting. A screenshot would also help.

Please provide a lot more information if we are to help you.

1. What exact version of Premiere are you using?
2. What OS and exact version?
3. What is your hardware configuration?
4. Is this problem new after updating to a specific version or has it been happening for a long time?
5. Does this happen with a specific type of media or all media?
6. What is the error? Please be very specific and post full UI screenshots that could give us information.
7. Have you tried creating a new project, importing your current project into it, then exporting again?
8. Have you tried a different format for exporting? For example, if you're having an issue with H.264, have you tested exporting a ProRes?
9. Does this happen when exporting via Premiere AND Media Encoder or just Premiere?

As you can see, there are a lot of factors to consider, so please provide as much information as possible to narrow down the issue.