Outlook 2007 Won’t Connect With Exchange 2010

exchange-2010outlook-2007

I just moved a company to a new office location, but the client computers running Outlook 2007 won't connect to the Exchange 2010 server.

The company has a new static IP address, but all of the MX records have been updated already. Plus, this really seems like an internal issue anyway.

The company is all on one domain.

Outlook web access works just fine, as do all of the smartphones. Email can be received and sent, and calendars and contacts sync properly

Any ideas why Outlook won't connect?

Best Answer

I think that is a problem of authentication, so try the following steps:

Go to->Account Settings>Change>More Settings>Security>And now change:

Negotiate Authentication

to:

Password Authentication

If you continue with the same error, then shows the error message that appears when you try to access Outlook.

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