Table of content

Share this article

  • Home
  • /
  • Blog
  • /
  • [Solved] PDF Search Not Working in Windows 10/11

[Solved] PDF Search Not Working in Windows 10/11

  • By Lena
  • |
  • Follow
  • twitter
  • |
  • Updated on June 23, 2025
Introduction:
When viewing a PDF, we can use the search function to find a specific text in a PDF file. However, you realize that the search function is not working properly. Why? Don't worry! This article will tell you why PDF search not working and how to fix it.
summary

Why Is My PDF File Not Searchable?

Let's start by looking at what can cause the “PDF search not working properly” problem. Understanding why problems occur can help us solve them faster.

❌ Non-Searchable Text. Text search is unavailable when the PDF is a scanned text image. That is, the document does not contain the actual searchable text. In this case, you should convert it to a searchable document.

❌ Software Bugs. The issue might be due to a bug or glitch in the PDF reader. Your reader version may be low, or the installation file may be corrupted.

❌ Incorrect Search Terms. The search functions are usually case-sensitive. Perhaps your search terms were not spelled correctly and therefore did not match the content in the PDF.

Next, I’ll show you how to fix this problem. If you want to search for words in a PDF as soon as possible, click the download button below to get SwifDoo PDF. This PDF tool allows you to search for words in standard and scanned PDF files.

How to Fix PDF Search Not Working

You can try these methods when the PDF is not search. If you don't want to spend time troubleshooting Adobe Acrobat, consider using an alternative reader for a quick search.

Fix 1. Try Another PDF Tool

When Adobe PDF search is not working, you can use a different viewer. Adobe Acrobat is not the only tool that lets you search for words in a PDF. Download and install a different reader, such as SwifDoo PDF, to see if it resolves the issue.

SwifDoo PDF is a popular Adobe Acrobat alternative for Windows users. This tool enables you to search and replace text in a PDF file with ease. With the Advanced Search, you can define the search range and enable case-sensitive & search words in bookmarks and annotations.

You can follow the steps below to search words with SwifDoo PDF:

1. Launch SwifDoo PDF and open the PDF file.

2. Click View and go to SearchAs a workaround, you can press Ctrl + F.

SwifDoo Search

3. Enter the words and hit Enter. When SwifDoo finds the term, it will be highlighted!

Find Text in SwifDoo PDF

To replace the text in the PDF, click Replace.

Replace

Fix 2. Convert Scanned PDF

As mentioned earlier, the PDF search not working problem will occur when the PDF is not a searchable file. In this case, you can convert the scanned or image-based PDF to a searchable format. The OCR feature of SwifDoo PDF can be of great benefit to you.

OCR stands for Optical Character Recognition. It converts images or scans to editable files. After the conversion, you can effortlessly search and replace text in the file. See how to use SwifDoo PDF to OCR a PDF and search text.

1. Run SwifDoo PDF and open the PDF you want to convert.

2. Click Edit and select OCR.

OCR

3. Adjust the language, output, and page range.

4. Finally, click OK.

OCR Settings

After the conversion, you will see the edit box. Now, you can press Ctrl + F to search text.

OCR Completed

You may also like:

Extract Text from Scanned PDF Online & Offline

Extract Text from Scanned PDF Online & Offline

This guide will tell you how to extract text from scanned PDF. Whether you want to make it online or offline, you will find a way to do it here.

READ MORE >

Fix 3. Update Adobe Acrobat

The bugs and glitches in Adobe Acrobat can cause the PDF search to malfunction. You can update the reader to fix it.

1. Click Help from the menu bar.

2. Choose Check for Updates.

3. Follow the prompts to install the update.

Update Adobe Acrobat

Fix 4. Repair Adobe Acrobat

Another way to fix the Adobe PDF search not working issue is to repair the installation. Adobe Acrobat may have missed some essential files during installation, which can cause it to work improperly. Fortunately, there’s one option to repair the installation.

1. Click Help from the menu bar.

2. Choose Repair Installation.

3. Click Yes and wait for the process to complete.

Repair Adobe Acrobat

Fix 5. Use bFallbackOnix32 Registry Key

If updates and “repair installation” don't work, enable PDF index via bFallbackOnix32 registry key. The specific steps are as follows.

1. Close Adobe Acrobat Reader.

2. Press Windows + R to open Run box > Type regedit.exe and press Enter.

Registry Editor

3. Go to the path and create the key.

For Acrobat:

Path: HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Adobe\Adobe Acrobat\DC\FeatureState

Key: bFallbackOnix32

Type: REG_DWORD

Value: 1

For Acrobat Reader:

Path: HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Adobe\Acrobat Reader\DC\FeatureState

Key: bFallbackOnix32

Type: REG_DWORD

Value: 1

4. Close the Registry Editor and try the search function.

Conclusion

That’s all about how to fix PDF search not working. Generally speaking, there are two main reasons for this problem: the error of the PDF reader, or PDF is a scanned/image-based document. Therefore, you can fix the reader and convert the PDF to a searchable file. Hope this guide is helpful.

PDF Search Not Working FAQs

  • Q:Why can't I search Words in PDF?
    The most common reason a PDF isn't searchable is that it's a scanned image. Scanned PDFs contain images of text, not selectable or searchable text layers.
  • Q:Why does my PDF search return no results, even though the text is there?
    The text might be part of an image or using a non-standard font that the PDF reader cannot recognize. Converting the PDF through OCR or ensuring fonts are correctly embedded during PDF creation can help.

Lena has been in the editing industry for 8 years. She is familiar with a variety of products that can make things easier, such as PDF tools, video recording software, iOS location changer, etc. She enjoys sharing her knowledge with users to help them solve problems in their work and life. In her spare time, she likes to play with her cat.

Related Articles