How to Change the Default PDF Viewer on Windows 11

On Windows 11, PDF files usually open by default in Microsoft Edge. While Edge is a capable browser and built-in PDF reader, many users prefer using third-party applications like Adobe Acrobat Reader, Foxit PDF, or SumatraPDF for their advanced features and familiarity.

If you’ve installed another PDF reader but Windows keeps opening your files in Edge, don’t worry — you can easily change your default PDF viewer.

In this guide, we’ll show you multiple ways to change the default PDF viewer on Windows 11 so your files always open in your preferred app.

1. Change the Default PDF Viewer via Settings

The simplest way to switch your default PDF viewer is through the Windows 11 Settings app.

1. Press Windows + I to open Settings.
2. Navigate to Apps → Default apps.
3. In the search box under “Set defaults for applications,” type the name of your preferred PDF reader (for example, Adobe Acrobat Reader).
4. Click the app’s name in the search results.
5. Scroll down until you find the .pdf file type.
6. Click on it and choose your preferred PDF reader from the list.
7. Click Set default.

Now, every time you open a PDF file, it will launch in the application you selected instead of Microsoft Edge.

2. Change the Default PDF App from File Explorer

You can also change the default PDF viewer directly from File Explorer by using the “Open with” menu.

1. Right-click any PDF file on your PC.
2. Select Open with → Choose another app.
3. Select your preferred PDF reader from the list.
4. Check the box that says Always use this app to open .pdf files.
5. Click OK to save your choice.

This method is quick and effective, especially if you just want to switch the default app once without going through Settings.

3. Use Control Panel to Change Default PDF Viewer

If you’re more comfortable using the traditional Control Panel interface, you can change your default PDF app there as well.

1. Press Windows + R, type control, and press Enter.
2. Go to Programs → Default Programs → Set your default programs.
3. Select your preferred PDF reader from the left-hand list.
4. Click Set this program as default.
5. Click OK to confirm.

Once done, your chosen PDF reader will automatically handle all PDF files.

4. Set PDF Viewer Using “Open With” for a Single File Type

If you have multiple PDF-like file types (for example, .pdf, .xps, .oxps), you can manually set your preferred viewer for each one.

1. Right-click a PDF file and choose Properties.
2. Under the General tab, find Opens with and click Change.
3. Select your preferred app from the list or click More apps to browse.
4. Click OK, then Apply, and OK again.

This ensures that Windows 11 consistently uses the application you selected to open that file type.

5. Change Default PDF Viewer via Adobe Acrobat (If Installed)

If you use Adobe Acrobat Reader, it offers an option to make itself the default PDF viewer automatically.

1. Open Adobe Acrobat Reader.
2. Go to the Edit menu and select Preferences.
3. In the left sidebar, choose General.
4. Scroll down and click Select as Default PDF Handler.
5. Follow the on-screen prompts to confirm.

Adobe Acrobat will then register itself as the default PDF viewer for all .pdf files.

6. Disable Microsoft Edge as Default PDF Viewer (Optional)

Sometimes, Windows reverts to opening PDFs in Edge after updates. If that happens, you can manually disable Edge’s default PDF association.

1. Open Microsoft Edge.
2. Type this into the address bar: edge://settings/content/pdfDocuments
3. Turn on Always download PDF files.

This prevents Edge from automatically opening PDF files and ensures they open in your preferred app instead.

7. Verify Default App Settings

After changing the default viewer, it’s a good idea to verify that Windows recognizes your selection.

1. Press Windows + I → go to Apps → Default apps.
2. In the search box, type .pdf.
3. Check which app is listed as the default under .pdf.
4. If it still shows Microsoft Edge, click it and select your desired reader again.

Once confirmed, try opening a PDF file to ensure it opens in the right app.

8. Update Windows and Your PDF Reader

If your changes aren’t saving or the default keeps resetting, outdated system components or apps might be the cause.

1. Open Settings → Windows Update → Check for updates.
2. Install all available updates.
3. Launch your PDF reader and check for software updates from within the app.

Keeping your system and applications up to date ensures compatibility with Windows 11’s default app framework.

Wrapping Up

Windows 11 defaults to Microsoft Edge as the PDF viewer, but you can easily switch to your preferred reader using the Settings, File Explorer, or Control Panel. If you’re using software like Adobe Acrobat, you can also set it directly from within the app itself.

Whether you prefer lightweight readers like SumatraPDF or full-featured tools like Adobe Acrobat, setting your own default PDF viewer ensures smoother workflow and familiarity every time you open a file.

Once you’ve followed these steps, Windows 11 will remember your choice — and your PDFs will always open in the application you actually want.