[Mozilla Enterprise] [FF ESR 60.2.0] very frequent "Hmm. We're having trouble finding that site" warning message

Tue Oct 16 08:05:22 UTC 2018

Hello Mike,

Thanks for your quick reply. Much appreciated down here

Will ask to proceed as suggested and let you all know about the results.

Bien Cordialement / Best Regards

[logo Orange]<http://www.orange.com/>

Pascal Wulleput
Orange Technology and Global Innovation – TGI
Orange Labs Services – OLS
Data Intelligence Enablers & Software Environnements - DIESE
Group Workplace Infrastructures & Services – GWIS
Maintenance, Support & Service Management

tel : +33 223 066 836
cel:  +33 633 467 082

pascal.wulleput at orange.com<mailto:pascal.wulleput at orange.com>

De : Mike Kaply [mailto:mkaply at mozilla.com]
Envoyé : mardi 16 octobre 2018 00:19
À : WULLEPUT Pascal IMT/OINIS
Cc : enterprise at mozilla.org
Objet : Re: [Mozilla Enterprise] [FF ESR 60.2.0] very frequent "Hmm. We're having trouble finding that site" warning message

That indicates a DNS issue.

On a machine where this happens, Can you open the network console (Ctrl+Shift+E)

Then do a reload and see if there is more detail on the error?

Mike Kaply

On Mon, Oct 15, 2018 at 12:57 PM, <pascal.wulleput at orange.com<mailto:pascal.wulleput at orange.com>> wrote:
Hello,

We are in the process of rolling out the 60.2.0 esr (64 bits) version of FF on our  +/- 100.000 workstations.
To do so we have used a combination of a SCCM package and GPO thanks to the FF ESR ADMX provided. As you can imagine this is our first experience with FF ESR GPO

So far we are observing a PILOT Phase and have an installed base of a couple thousands of  60.2.0esr (64 bits) and we have been asked to slow down because users report they “quite often” get this warning message when they have “multiple” FF tabs opened at the same time.
This is something we never experienced or at least we never experienced without being able to explain it before while using FF ESR 52.x or earlier releases.
Our proxy settings have not changed either.
This does not happen when users only have a couple Tabs opened at the same time.

Does this ring a bell to you ?
Any idea on how we should conduct troubleshooting sessions to try to establish the root cause of this ? Anything we can try to log in the software program ?

Thanks a lot

[cid:image003.jpg at 01D46537.BFA7D140]

Bien Cordialement / Best Regards

[logo Orange]<http://www.orange.com/>

Pascal Wulleput
Orange Technology and Global Innovation – TGI
Orange Labs Services – OLS
Data Intelligence Enablers & Software Environnements - DIESE
Group Workplace Infrastructures & Services – GWIS
Maintenance, Support & Service Management

tel : +33 223 066 836
cel:  +33 633 467 082

pascal.wulleput at orange.com<mailto:pascal.wulleput at orange.com>

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Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc
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a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration,
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This message and its attachments may contain confidential or privileged information that may be protected by law;
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