"Connecting to proxy server office15client.microsoft.com"

Question

_{Thursday, July 10, 2014 3:58 PM}

I have a User who is receiving the following error when opening up Office 2013 applications (Word, Excel, Powerpoint)

"Connecting to proxy server office15client.microsoft.com"

You can click Cancel 3 or 4 times.

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Any ideas or help would be appreciated.

It doesn't happen as another user. (Administrator)

Thanks

All replies (11)

_{Friday, July 11, 2014 8:45 AM ✅Answered | 1 vote}

Hi,

Try to disable the "Allow Office to connect to the Internet" from File -> Options -> Trust Center -> Trust Center Settings -> Privacy Options within the Office applications.

If this issue still exists, please go to Control Panel -> All Control Panel Items -> Credential Manager -> Windows Credentials, remove the credentials for Microsoft Office, then try to type in the password and test if the issue persists.

Regards,

Melon Chen
TechNet Community Support

_{Monday, July 21, 2014 3:58 PM}

Hi

I face the same issue. Did you manage to get a way to solve it ?

Many thanks,

_{Thursday, August 6, 2015 9:30 AM}

Hi! I have tried all these suggestion but it still does the same thing. Credentials in Credential manager are non-existent, registry entry for connecting to internet was changed, trust center settings done and I even stopped it from updating but all my users with 0ffice2013 have this problem. I need the office installations to not connect to the internet for any reason.

_{Tuesday, August 18, 2015 4:33 PM}

Hello,

Having exactly the same issue - all options for Office connecting to the Internet turned off, yet still getting the prompt for entering user/pass to access Internet.

For once and for all - where does this get turned off!

Thanks

_{Monday, August 22, 2016 5:39 PM}

Hello. I tried both suggestions but the problem still persists. Do you have other suggestions/solutions? Thanks.

_{Thursday, August 25, 2016 1:50 PM}

I have same problem. Tried almost all things without positive results.

I have done:

a) Options->Trust Center->Configuration->Privacy->unmarked "Allow office to connect to internet" checkbox

b) included the office15client.microsoft.com in hosts file redirecting to 127.0.0.1 (localhost)

c) inluded the address in bypass proxy address

d) disable welcome screen from office applications

e) Change Register value

HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Common\Internet\useOnlineContent

Nothing Works. That´s very annoying all this...

_{Friday, November 4, 2016 4:43 PM}

Buenos días,

saludos desde colombia la forma mas sencilla para deshabilitar este proceso de autenticación, teniendo en cuenta que se valida todo lo encontrado en internet.

Se resuelve de la siguiente manera.

Herramientas\configuracion vista de compatibilidad\ en esta parte donde dice Agregar este sitio web, agregar las url  que solicite el sistema. En mi caso:

Contentstorage.osi.office.net

Officeclient.microsoft.com

Saludos....

_{Tuesday, April 4, 2017 7:21 AM}

Same issue.

This issue has been fixed multiple times. Something keeps putting it back rendering solutions futile.

Have done so far:

- Disabled online access in privacy settings - Worked for a day

- Set the registry key - Worked for a day.

- Firewall exclusions did work before but then we modified the .pac file to exclude these addresses. Worked for a day.

- Credentials, none saved

It's really annoying and get's in the way of working.

_{Tuesday, April 4, 2017 8:18 AM}

Firewall .pac file worked again today.

had to add this to the nested "if"

dnsDomainIs(host, "office15client.microsoft.com")

https://gallery.technet.microsoft.com/Office-365-Proxy-Pac-60fb28f7

_{Wednesday, August 8, 2018 11:53 PM}

I have a similar issue, the only difference being that for me the proxy I need to sign into is "autodiscover-s.outlook.com" and I tried these but they didn't work, do the different proxies have different solutions? If so, what are they?

_{Monday, November 12, 2018 2:50 PM}

Same here