Error on saving PDF in Acrobat DC on Windows 10 - " The file may be read-only, or another user may have it open".

Problem: Unable to save PDF files in Acrobat DC on Windows 10

When you save a PDF in Acrobat DC on Windows 10, you get an error: "The file may be read-only, or another program may have it open. Please save the document with a different name or in a different folder."

Error message when you save PDF file in Acrobat DC

Solution: Configure the controlled folder access setting in Windows 10 to allow Acrobat DC

Controlled folder access is a Windows 10 feature that helps protect your documents and files from modification by suspicious applications. The above-mentioned error appears when Acrobat DC is denied permission to save PDF files on your computer. You have to add Acrobat to the list of safe or allowed applications in controlled access folder settings.

Steps to configure controlled folder access to allow Acrobat DC

  1. Quit Acrobat DC, if it's already running.

  2. In Windows, click Start and then click the settings  icon. The Windows Settings dialog is displayed.

  3. Click Update & Security.

    Update and security
  4. In the left pane, select Windows Security and then click Virus & threat protection. The Virus and Threat Protection dialog is displayed.

    Select virus and threat protection
  5. In the Virus & Threat Protection settings, click Manage Settings.

    Click Manage Settings in Virus & threat protection settings
  6. In the settings window, scroll to Controlled Folder Access section, and then click Manage Controlled Folder Access.

    Manage controlled folder access
  7. Click Allow An App Through Controlled Folder Access.

    Allow an app through controlled folder access
  8. Click Add An Allowed App. From the drop down list, select Recently Blocked Apps.

    Allow recently blocked application
  9. Look for Acrobat.exe in the list of recently blocked apps.

    Recently blocked apps
  10. To add Acrobat to the list of allowed apps, click the (+) sign.

    Acrobat DC is now successfully added to the list of allowed applications. You can now save any PDF files in Acrobat DC.