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Fix 'The Server Returned an HTML Error Page' When Opening PDF Files
Question details
The user encounters an HTML error page instead of the expected document content when attempting to open a downloaded PDF file.
- Product
- PDF Reader
- Device & OS
- not provided
- Scenario
- Attempting to open a PDF file that was recently downloaded from the internet or a server, which previously opened without issues.
- Observed behavior
- The PDF reader displays the error message 'The server returned an HTML error page', indicating the downloaded file contains web error code rather than actual PDF data.
Ensure you have a stable internet connection and verify that the website or online portal hosting the PDF document is not currently experiencing server downtime.
Re-download and Verify the PDF File Locally
Downloading the file again ensures you get the actual PDF data instead of a temporary web server error page that was incorrectly saved as a document.
Often, temporary server glitches or expired download links cause the browser to save an HTML web page instead of the targeted PDF. You need to download a fresh copy directly from the source.
Go back to the original website, email, or online portal where the PDF download link was provided.
Right-click the PDF download link and select 'Save link as...' or 'Download linked file' to manually save it to your computer.
Navigate to the folder where you saved the file. Right-click it, select 'Properties', and ensure the file size is larger than a few kilobytes and ends in '.pdf'.
Double-click the verified file from your local folder to open it in your PDF reader.
Switch Web Browsers or Change Networks
Browser cache issues or restrictive network firewalls can intercept PDF downloads, causing them to save as HTML error pages instead.
Open and Manage PDFs Seamlessly with WPS Office
WPS Office includes a robust, built-in PDF reader and editor that securely handles downloaded PDF files, providing a smooth reading experience without common loading errors.
- 1. Download WPS Office: Visit the official WPS website and install the free WPS Office suite on your device.
- 2. Launch the application: Open WPS Office and click on 'Open' from the left-hand navigation menu.
- 3. Select your PDF: Navigate to the local folder where your freshly downloaded PDF is stored, select it, and click 'Open'.
- 4. Read and edit: Use the built-in WPS PDF tools to view, annotate, or convert your document with ease.
Frequently Asked Questions
Why does my PDF file download as an HTML document?
This typically happens when a download link expires, requires server authentication, or the hosting server encounters an error. Instead of sending the PDF document, the server sends an error message webpage, which your browser accidentally saves as a .pdf file.
Can I convert the downloaded HTML error page back into a PDF?
No, it is not possible. The HTML error file does not contain any hidden PDF data; it only contains the text of the server's error message. You must resolve the download issue and obtain a fresh copy of the actual file.
How do I check if my downloaded file is a real PDF?
Right-click the downloaded file and select 'Properties' on Windows (or 'Get Info' on Mac). Check the file size; real PDFs are typically much larger than 20 KB. You can also open the file in a standard text editor like Notepad—if you see HTML code (like <html> or <body> tags), it is an error page, not a PDF.
