Can't export video with H.264 format from Premiere Pro 2023 version 23.1.0 (Build 86)

[Agnes23111509xiaq]

Hello Community. I've recently got a new laptop and updated to Premiere Pro 2023, and since then I cannot export my videos in H.264 (mp4) format. Other formats like Quicktime or AVI work. When I try to export as H.264, I don't get any error messages just a 1 kb sized .mp4 file, and it cannot be opened with media players. The video also had captions, which are okay when I export it as Quicktime format. I already tried the solutions suggested here but didn't work: https://helpx.adobe.com/premiere-pro/kb/error-compiling-movie-rendering-or.html

Premiere Pro is up-to-date according to the Creative Cloud. (Version 23.1.0 Build 86).
I already updated my graphics card's driver (Nvidia display driver v516.25) and installed the K-Lite-codec pack 1741 basic.

My PC specification:
Lenovo ThinkPad P15
11th Gen Intel(R) Core(TM) i9-11950H
64 GB RAM
NVIDIA RTX A3000
Windows 10 Enterprise 22H2 19045.248
Windows Feature Experience Pack 120.2212.4190.0

[Suraj5EBF]

Have you try resetting Preferences by Pressing "Option" or "Alt" key while launch the application. What is imported files format? Can you share more info?

Thanks,

Suraj Shinde.

[Ann Bens]

NEVER install a codec pack on an editing machine, they can mess up your good codec.

The only way to get rid of this is to do a clean windows install.

Update nvidia driver to 528.24 studio driver.

Post screenshot properties clip, sequence settings and export settings.

[Agnes23111509xiaq]

@Suraj5EBF @Ann Bens Thank you for your answers.
The problem occurred before the codec installation, but I uninstalled it and updated the Nvidia driver, but nothing changed.
I tried different scenarios: 
I can export mp4/.H264 if I start a new project, settings aren't matter. I also can export this format if I use Adobe After Effects.
The problem occurred when I opened an older Premiere Pro project, convert it to a Premiere Pro 2023 project, then clicked "Save as" and saved it as another project file to work with. When I try to export my work in H.264 format, I have to change in the Encoding settings the Performance to Software Encoding and the file will be OK. If I use Hardware Encoding, the file will be corrupted.

So the solution mentioned here didn't work: (Go to Preferences > Media and deselect Enable hardware accelerated decoding (requires restart).)
What have worked is this: Export > Video and at the Encoding Settings use the Software Encoding option for Performance.