When open PDF document from scanning it show message "DefaultMetricsFont"

Hi there,

Hope you are doing well, and thank you for sharing the details and for attaching the error message—that really helps.

If the scanned PDF opens fine in Microsoft Edge and Google Chrome but shows an error in Adobe Acrobat Reader, it usually means the PDF was created in a way that doesn’t fully follow PDF standards. Web browsers are more forgiving and can open such files, whereas Acrobat Reader is stricter and may flag structural issues.

Here are a few things you can try:

1. Update Adobe Acrobat Reader
Make sure you’re using the latest version of the Acrobat application. Updates often include fixes for file-handling issues. Go to Help > Check for updates and reboot the computer once.

2. Try “Save a Copy” or “Print to PDF” in Acrobat

• Open the file in a browser (Edge or Chrome).
• Choose Print and select Microsoft Print to PDF.
• Open the newly created PDF in Acrobat Reader and check if the error is gone.

3. Optimize or Repair the PDF 
Go to File > Save as Other > Optimized PDF, under the font tab, check for any unembedded fonts.

You may also try File > Save As to rewrite the file structure.

Check the scanner/driver firmware
Even if the settings look fine, outdated scanner firmware or drivers can sometimes generate non-compliant PDFs. Updating them often resolves this behavior.

Additionally, please go through the help page https://adobe.ly/4qHtvqG and see if that works.

~Amal