Whenever I try to perform OCR recognition on a scanned Simplified Chinese document, an error message will pop up: Acrobat could not perform Text Recognition on this page because: Unknown error (see uploaded screenshot). The scanning quality is very high. English documents scanned in the same way can be easily recognized through OCR. Meanwhile, simplified Chinese OCR works fine on Android App.

When performing Simplified Chinese OCR recognition on the Android app, the app prompts me to download the Simplified Chinese language pack. However, there is no such prompt on the desktop software. I'm not sure if the problem is due to the lack of the language pack. But I've searched through preferences settings and haven't found the place to download the OCR language pack.

I attached a test file for simplified chinese OCR, anyone who want to reproduce the bug could use this file.

• Steps to reproduce the issue: perform simplified chinese OCR on the attached test file, or any other scanned Simplified Chinese document.
• Environment (OS, other related application versions, etc.): Windows 11, Adobe Acrobat Pro Continuous Release 2025.001.20435 64-bit
• Expected result: OCR works on scanned Simplified Chinese document.
• Observed result: error message "Acrobat could not perform Text Recognition on this page because: Unknown error".