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Office 2016: ADD-IN ERROR - This add-in could not be started. Close this dialog to ignore the problem or click "Restart" to try again.

If you receive the mentioned Add-in error in Excel 2016. Please follow the steps given below to resolve the issue .

  • In Internet Explorer, click the Tools button, and then click Internet Options.
  • Click the Security tab, and then select the Internet Sites Zone.
  • Select the Enable Protected Mode check box, and then click OK.
  • Restart Internet Explorer and Excel

For more information checkout this article on Microsft Technet.

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    Jennifer Trejo

    This solution is not working for one of our users. Do you have any other suggestions?

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