Moved and upgraded, now clicking links to uploaded PDF-files logs out

Moved and upgraded, now clicking links to uploaded PDF-files logs out

by Max Elander -
Number of replies: 2

We moved to a new server (Debian 8) to be able to upgrade PHP to PHP 7, added SSL and then upgraded to 3.5.2.

Now, when a user (any user, also admins) click on a link to a file resource (i.e. /mod/resource/view.php?something) they are redirected to the login page. It is however not possible to log back in, unless the window or tab is closed and a new is opened.

I've tested this in Safari, Chrome and Firefox, macOS and Windows, and it is consistent across client environments, but I can't figure out what the problem on the server could be.

EDIT: I just realized that it only seems to affect PDFs, not for instance .docx files. Maybe that is a clue to someone (though not me)…

Any ideas?

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In reply to Max Elander

Re: Moved and upgraded, now clicking links to uploaded PDF-files logs out

by Howard Miller -
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Switch on Debugging. Reproduce the problem. Check your web server's error log. 

Hopefully, something is going wrong that is getting logged. 

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In reply to Max Elander

Re: Moved and upgraded, now clicking links to uploaded PDF-files logs out

by Visvanath Ratnaweera -
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Did you try from somewhere outside your institution, to eliminate the possibility of content filters, virus protection, all kinds of security enhancements, etc. from your institution side? Also, try with a "neutral" machine, if the device you use belongs to the school's IT.

Failing that, switching the debugging on is where to start.
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