Export issue makes program unusable

Hi vonh16444957,

Sorry for your issue.

Could you try exporting with the Software Only renderer and see how it goes. Here's how to switch: https://community.adobe.com/t5/premiere-pro-discussions/faq-how-to-change-the-video-renderer-in-premiere-pro-and-adobe-media-encoder/td-p/9851383

Let us know the results.

Thanks,

Nishu

Hi vonh16444957!

Sorry for the export issue. Can you share the following information? 

• What are your system details (OS, CPU, RAM, GPU)?
• Which device did you use to capture footage?
• Could you provide the screenshot of the Export Settings?

Let us know.

Thanks,

Kartika

Delete the Media Cache and Media Cache files:
https://community.adobe.com/t5/premiere-pro/faq-how-to-clear-your-media-cache-in-30-seconds-in-premiere-pro-2020/m-p/11017257/thread-id/260446?page=1

If that doesn't work,try resetting the preferences:
https://community.adobe.com/t5/premiere-pro/faq-how-to-reset-trash-preferences-in-premiere-pro/td-p/8236158?page=1

If that doesn't work, try resetting the Workspaces:
Reset a workspace
Reset the current workspace to return to its original, saved layout of panels.
1. Do one of the following:
• Click the Workspace menu icon and select Reset to Saved Layout.
• Choose Window > Workspace > Reset to Saved Layout.
from here:
https://helpx.adobe.com/premiere-pro/using/workspaces.html

If that doesn't work, try Preferences > Audio Hardware and set Input to None.

If that doesn’t work, try updating or rolling back your graphics driver directly from the video card manufacturer’s site. If NVIDIA, do a clean install of the latest Studio Driver (NOT the Game Driver)

If that doesn't work, try creating a new project and import the old one into it.

Also, please help us help you:
https://community.adobe.com/t5/premiere-pro/faq-what-information-should-i-provide-when-asking-a-question-on-this-forum/td-p/3929027?page=1