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Basic trouble shooting needs to be done at client end, what troubleshooting steps you have conducted so far?
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Hi Mahesh, I can remote into any of these clients. &nbsp;I was able to ping the host name, uninstalled Office 2016 installed 2013, that worked, back to 2016 no worie. &nbsp;Also deleted profile made new one, same problem.
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what is your exchange version ?<br />
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uninstalled Office 2016 installed 2013, that worked, back to 2016 no worie.
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so reinstalling / repairing outlook 2016 resolves your issue?
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sorry &quot;worie&quot; is a a mistype of &quot;NoWorke&quot; &nbsp;I think it's an update in 2016, but I can't prove it. &nbsp;I read somewhere that there was an update to 2016 that won't let it connect to older email hardware, but there wasn't much else.
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what is your exchange version ?
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Oh, it's the Exchange online, 365. &nbsp;Go Daddy and Network Solutions. &nbsp;The POP clients are the same, Go Daddy and Network Solutions.
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but 99 percent of my clients are oK<br />
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I think I found the fix, but this isn't going to look good on me as an admin, but noone knows me here.<br />
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So when I take the primay dns and set it not to be the domain controller, but googles, it works fine. &nbsp;<br />
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I'll go ahead and accept you guys for the answer, thanks again for the help you two.
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Thanks a ton for the fast help
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you simply need to forward internet traffic to google dns on domain controller under dns manager \ server properties \ forwarder tab and ensure that on machines preferred dns is pointing to domain controller / dns server IP only, else you will find other AD authentication issues
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Hi, starting about two days ago, or Sept 12th, 2018, I have had about 6 calls where users said their Outlook 2016 systems were unable to connect to get mail. &nbsp;Some are Exchange, and others POP accounts. &nbsp;They get a trying to connect, then failed to connect message.<br />
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This is different companies at different sites. &nbsp;Strange thing is it's only Outlook 2016, not 2013 or older.<br />
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Thanks all.
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Hi, starting about two days ago, or Sept 12th, 2018, I have had about 6 calls where users said their Outlook 2016 systems were unable to connect to get mail.  Some are Exchange, and others POP accounts.  They get a trying to connect, then failed to connect message.

This is different companies at different sites.  Strange thing is it's only Outlook 2016, not 2013 or older.

Thanks all.

Multiple Outlook clients cant connect to servers.

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.