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Office 365 - Unable to log into Outlook on the web due to network or DNS errors

If you are unable to log into your UW-Madison Office 365 account via a web browser due to a DNS error, please review the information below. The issue may be related to the network you are connected to.

Possible DNS error

dns error

Important: this error may be due to an invalid network configuration within your computer/network you are connected to. If your computer is not connected to UWNET/UW-Madison campus network, please try the workarounds below. The steps below are meant to be temporary workarounds until Microsoft or Internet Service Providers address the underlying DNS issues causing this problem:

  • Log into MyUW (https://my.wisc.edu) and launch Outlook on the web from the MyUW email widget.

  • Reset/Flush your computer DNS (highly recommended you perform this step per guidance from help desk support staff)

    If this resolves your problem, no need to continue.

  • Renewing your computer IP address (DHCP) (highly recommended you perform this step per guidance from help desk support staff)

    If this resolves your problem, no need to continue.

  • Reset your internet modem/router (highly recommended you perform this step per guidance from help desk support staff)

    If this resolves your problem, no need to continue.

  • Connect to the Internet through WiscVPN (Recommended)

    If this resolves your problem, no need to continue.

  • Update your computer's DNS server settings (contact your local network administrators before making this change)
    Add the following Google Public DNS server addresses:
    • 8.8.8.8 (primary)
    • 8.8.4.4 (alternate)

See Also:




Keywords:microsoft ms office365 o365 Unable to log into Outlook on the web due to network or dns errors this site can't be reached login.microsoftonline.com server dns address could not be found try running windows network diagnostics dns_probe_finished_nxdomain outlook owa chrome safari mac osx windows internet explorer edge firefox mozilla google   Doc ID:78362
Owner:Ara M.Group:Office 365
Created:2017-11-21 12:50 CSTUpdated:2017-12-05 17:32 CST
Sites:DoIT Help Desk, DoIT Tech Store, Office 365
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