Fix Word and Excel Cannot Open Downloaded Files Error
Question details
Microsoft Word and Excel display an insufficient memory or disk space error when attempting to open files downloaded from the internet, while locally created files open normally.

- Product
- Microsoft Word, Microsoft Excel
- Device & OS
- Windows
- Scenario
- Opening Office documents downloaded from email, web browsers, or other online sources.
- Observed behavior
- The application fails to open the downloaded file and throws an insufficient memory or disk space error message, even though the system has adequate resources.
Ensure your computer has available physical memory and disk space, and verify that your antivirus software is not mistakenly quarantining the downloaded document.
Unblock the Downloaded File in Properties
Windows security features often block files originating from the internet. Unblocking the file resolves the restriction.
When files are downloaded from the web, Windows tags them with a 'Mark of the Web' which triggers Office's Protected View. If Protected View fails, it often displays a false insufficient memory error.
Open File Explorer and navigate to the folder where your downloaded Word or Excel file is saved.
Right-click the affected file and select 'Properties' from the context menu.
On the 'General' tab, look for a Security section at the bottom. Check the box or click the button labeled 'Unblock'.
Click 'Apply' and then 'OK'. Double-click the file to open it in Word or Excel to see if the error is resolved.

Run an Online Repair for Microsoft 365
If unblocking the file does not work, repairing the Microsoft 365 installation can resolve underlying application errors.
Try WPS Office to Open Downloaded Documents Flawlessly
If Microsoft Office frequently throws memory errors or blocks your downloaded files, consider switching to WPS Office. It is a highly compatible, lightweight, and free alternative that opens Word, Excel, and PowerPoint documents without the frustrating security glitches.
- 1. Download the software: Visit the official WPS Office website and click the free download button for Windows.
- 2. Install WPS Office: Run the installer and follow the simple on-screen instructions to set up the suite on your computer.
- 3. Open your files: Right-click your downloaded document, select 'Open with', and choose WPS Office to bypass the previous errors.

Frequently Asked Questions
Why does Office say I have insufficient memory when I have plenty?
This is often a false error triggered by Microsoft Office's Protected View security feature when trying to open files from the internet. When the application fails to initialize the secure sandbox, it defaults to showing an insufficient memory or disk space error.
How can I permanently disable Protected View for downloaded files?
You can open Word or Excel, go to File > Options > Trust Center > Trust Center Settings > Protected View, and uncheck 'Enable Protected View for files originating from the internet'. However, this is generally not recommended as it leaves your system vulnerable to malicious files.
Should I clear the Windows Fonts folder to fix this issue?
No, you should avoid manually deleting files from the Windows Fonts folder. Deleting system fonts can cause widespread display issues across your operating system. If you suspect a font-cache issue, use standard Windows diagnostic tools to rebuild the font cache instead.




