outlook 2016 sending udp and not connecting to exchange 2016

Question

outlook 2016 sending udp and not connecting to exchange 2016

Iusethis,because you still did not fix my account! 1

I have outlook 2016 running on a windows7 ultimate which is creating an account and connecting fine to an exchange 2016 server.

However when I have an outlook 2016 running on a windows7 pro, it does not want to connect.

I was dumping traffic and saw that there was a difference between the pro and ul machine. The pro was sending udp on 137.
So I disabled netbios and removed the workstation from the domain. I can verify there is now no udp traffic like with the ul.

But still this pro complains about

"the action cannot be completed. The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action."

First two steps of creating the account in the profile are ok
ok - establishing network connection
ok - searching for ******@xxxxxxx.xxx settings

Anyone an idea how to get this outlook 2016 working on pro?

Iusethis,because you still did not fix my account! 1 Reputation point

2021-01-09T13:27:52.623+00:00

When disabling the netbios and monitoring dns queries. I see that the pro fails after doing the dns request _kerberos._tcp.dc._msdcs. The ul. is not doing this query at all.

So maybe there is a setting in windows somewhere that is making outlook 2016 perform this query?

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Iusethis,because you still did not fix my account! 1 Reputation point

2021-01-09T13:27:52.623+00:00

When disabling the netbios and monitoring dns queries. I see that the pro fails after doing the dns request _kerberos._tcp.dc._msdcs. The ul. is not doing this query at all.

So maybe there is a setting in windows somewhere that is making outlook 2016 perform this query?

Answer 1

Iusethis,because you still did not fix my account! 1

Found this on the old workstation, after installing that, problem gone.
outlook2016-kb4484212-fullfile-x64-glb

Just posting in case some encounters the same.

Jade Liang-MSFT 9,986 Reputation points Microsoft Employee

2021-01-11T06:21:49.307+00:00

Hi,
Sorry for delay and glad to see your issue has been resolved. According to your description, your issue may be related to your client hasn't installed the related update, thanks for your detailed sharing.
Actually, it's recommended to always install the latest update of Outlook client, which could provide you with a better experience.

Besides, I have convert your solution to answer, in order to close this thread normally, please kindly mark your post to answer, which would benefit others who also has similar issues, thanks for your support and understanding.
Jade Liang-MSFT 9,986 Reputation points Microsoft Employee

2021-01-15T10:17:40.423+00:00

Hi @Iusethis,because you still did not fix my account! ,
Do you still have any questions about it?
If not, in order to close this thread normally, please kindly mark the helpful post to answer, which would benefit others who also has similar issues.
Thanks for your understanding.

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outlook 2016 sending udp and not connecting to exchange 2016

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