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Export to pdf not working after upgrade to IE11



When downloading a PDF ‘eform’ document created within PRPC, browser prompts to save it using a filename based on the calling URL rather than the expected PDF name. This issue is only occurring on Internet Explorer (IE) Version 11; earlier versions of IE do not show the issue.

Error Messages

When prompted to save the PDF, IE 11 provides a filename such as this:


Steps to Reproduce

Create an Activity to generate an ‘eform’ PDF document and streams the PDF back to the browser.

Root Cause

The issue was diagnosed using a HTTP Trace Tool (‘Fiddler’).
The HTTP headers returned from the server looked like this:

HTTP/1.1 200 OK
Server: xxxxxxxx/xxxxxx
Date: Tue, 22 Nov 2015 10:23:27 GMT
Pxhandler: File Download
Content-disposition: attachment;filename="Test%09PEGA%09Document.pdf"
Expires: Thu, 01 Dec 1994 16:00:00 GMT
Content-type: application/octet-stream
Cache-control: private
Content-language: en
Content-Length: 320312

In particular the ‘Content-disposition’ header contained an illegal filename: "Test%09PEGA%09Document.pdf".

When this filename string is decoded (URL Decoded); it resolves to:

“Test[TAB]PEGA[TAB]Document.pdf”; where “[TAB]” denotes the ASCII TAB character: TAB characters are not legal within filenames.


Modify Activity to ensure that no TAB characters were included in the ‘filename’ Parameter.

Published January 31, 2016 - Updated October 8, 2020

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