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When I open a report in Excel format it doesn't open in a new tab and I have to log back in to my system. Worked until a week or two ago. PDF works fine. Help!

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I'm operating on Windows 7, Firefox 54 (32-bit). I'm running a report in my cloud based system and opening it in Excel format. The report opens fine but causes a blank Mozilla window and my software I was logged into is no longer there on my tab. I have to log back in every time after running a report in Excel format. When I run and open a report in PDF format, however, it opens it in a new window and I still have my tab with my system that I'm logged into that I can continue working in. This was not a problem until a week or two ago. Can anyone assist?

I'm operating on Windows 7, Firefox 54 (32-bit). I'm running a report in my cloud based system and opening it in Excel format. The report opens fine but causes a blank Mozilla window and my software I was logged into is no longer there on my tab. I have to log back in every time after running a report in Excel format. When I run and open a report in PDF format, however, it opens it in a new window and I still have my tab with my system that I'm logged into that I can continue working in. This was not a problem until a week or two ago. Can anyone assist?

All Replies (3)

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As a temporary emergency measure, try keeping an extra tab open in your application window (Ctrl+t) and that may enable you to right-click that tab and use "Undo Close Tab" when the problem occurs.

But more to the point, it sounds like the same problem as in these threads:

Those users found disabling Firefox's multiprocess feature to be an effective workaround. I haven't yet seen an explanation for what causes the problem, but Firefox 54 now divides content over several additional processes, so it could be a glitch related to that change.

Could you try that out and see whether it works for you?

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Undo Close Tab worked. At least this keeps me from having to log back in again.

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Also, a fix for this was included in yesterday's .1 update. It's the "Fix a tab display issue when downloading files" line in the release notes (and associated issue in the bug tracking system): https://www.mozilla.org/firefox/54.0.1/releasenotes/

Not sure how long it will take for all Firefox users to get that fix, it may take several days to roll out.