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Question

PDF With No Pages Does Not Load In Web Access Unless Using VPN

Web Client Version 10 Administration
Updated June 18, 2020
asked on June 18, 2020

User opens a PDF that does not have pages in Web Access 10.3.1.51.  The PDF Viewer displays 0 of 0 pages and the file never opens.  Web Access is accessible externally via a proxy server.  If they connect to their VPN, they can open the file normally.  PDF files with pages do not have an issue.

 

This happens in multiple browsers.  Do see the error in Chrome: "unchecked runtime.lastError: The message port closed before a response was received."  On one workstation, the user disabled the Norton Safeweb extension and they were able to open the file without the VPN.  On another workstation, Norton is not installed.  The only extensions installed are Bing and Laserfiche.

 

Anyone know why this would occur only when not connected to the VPN?

 

PDF with no pages, not connected to the VPN:

Same file, connected to the VPN:

Error:

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Replies

replied on June 18, 2020

The pdf viewer uses range requests to render the pdf without having to download the entire thing. It sounds like your proxy and Norton extension are unable to handle these correctly. Proxies will often turn range requests into full resource requests - while it's less efficient, it's easier. This is legal and web access supports it, maybe see if you can enable that mode in the proxy?

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