Fix Encrypted PDF Cannot Be Saved Error (File Not Found)
Question details
The user is unable to save an encrypted PDF, encountering error messages indicating the file cannot be found, is read-only, or is locked by another user.

- Product
- Device & OS
- not provided
- Scenario
- Attempting to modify and save changes to an encrypted or password-protected PDF document.
- Observed behavior
- The application fails to save the file, displaying an error message such as 'This file cannot be found', 'Read-only', or stating the file is open by another user.
Verify that you have the necessary password for the encrypted PDF and ensure the file is not currently opened in a web browser or another background application on your device.
Check Document Security Restrictions and Save Locally
Review the document's permission settings to confirm saving is allowed, and bypass network or folder glitches by saving a copy directly to your local drive.
PDF encryption can restrict actions like editing, printing, and saving. If the creator has disabled document assembly or modifications, the application will prevent you from rewriting the file. Additionally, saving to a mapped network drive can trigger 'file not found' errors if the connection is unstable.
Open the PDF in your reader (such as Acrobat) and navigate to 'File' > 'Properties' > 'Security'.
Look at the 'Document Restrictions Summary' to confirm that 'Changing the Document' and 'Saving' are listed as 'Allowed'.
Click 'File' > 'Save As' and select a local folder on your computer, such as your Desktop or Documents folder.
Enter a completely new filename to avoid overwriting conflicts or active locks, then click 'Save'.

Disable Read-Only Mode and Close Conflicting Programs
Remove file-level read-only attributes in your operating system and ensure no other background process is locking the PDF.
Easily Manage and Save Encrypted PDFs with WPS Office
WPS Office provides robust PDF editing and security tools, allowing you to easily view permissions, manage encrypted files, and save documents locally without hassle.
- 1. Open the PDF: Launch WPS Office and open your encrypted PDF file.
- 2. Check Permissions: Navigate to the 'Protect' tab to easily view or modify the document's encryption and restriction settings.
- 3. Save as a New Copy: Click 'Menu' in the top-left corner, select 'Save As', and choose a local directory to bypass network saving errors.

Frequently Asked Questions
Why does my PDF say 'this file cannot be found' when I try to save?
This typically occurs if the PDF is stored on a network drive that momentarily disconnected, or if strict encryption permissions block the software from rewriting the file to its original path. Using 'Save As' to a local drive usually resolves it.
How can I edit a PDF if the document restrictions say 'Not Allowed'?
You cannot alter the file without the permission password. The encryption restricts unauthorized modifications. You must contact the document creator to obtain an unlocked version or the necessary password to change the security properties.
Does using 'Save As' remove the encryption from the PDF?
No, using 'Save As' typically retains the original security settings and passwords of the PDF. To remove encryption, you must specifically go into the security properties and disable the security method using the correct password.




