This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Outlook Anywhere stopped working "client used wrong authentication scheme"

Since last weekend, our Outlook Anywhere has stopped working for Outlook clients on windows 10. Outlook 2013 works still on my win 7 laptop but any win 10 laptops I've tested just repeatedly come up prompting for credentials and not successfully connecting to our exchange 2010 server.

In the logs I found:

 

May  2 12:16:48 sophos-utm-int 2017:05:02-12:16:48 sophos-utm-int reverseproxy: [Tue May 02 12:16:48.412296 2017] [auth_basic:error] [pid 25187:tid 3718675312] [client 125.255.42.75:31749] AH01614: client used wrong authentication scheme: /rpc/rpcproxy.dll

May  2 12:16:48 sophos-utm-int 2017:05:02-12:16:48 sophos-utm-int reverseproxy: id="0299" srcip="125.255.42.75" localip="192.168.10.241" size="381" user="-" host="125.255.42.75" method="RPC_IN_DATA" statuscode="401" reason="-" extra="-" exceptions="SkipURLHardening" time="4495" url="/rpc/rpcproxy.dll" server="mail.shoalhaven.nsw.gov.au" referer="-" cookie="OutlookSession=\"{1E68F949-EC5F-4B44-8321-3810F4924A4C} Outlook=16.0.4266.1001 OS=10.0.14393 CPUArchitecture=9\"" set-cookie="-"

I don't believe anything has changed on the utm or on the server. However last week exchange 2016 was installed on a new server in readiness for us to migrate.

 

any hints or clues would be appreciated.

regards

andrew



This thread was automatically locked due to age.