Configuring Security Options for the Excel add-In
- Last UpdatedMar 05, 2025
- 2 minute read
To configure internet security settings:
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Open the Internet Options dialog. You can find this dialog in multiple ways:
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Launch Internet Explorer. From the Tools menu, select Internet Options.
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From the Windows Control Panel, launch Internet Options.
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The Internet Options dialog displays. Select the Security tab, then select the Local intranet zone.
Set the Security level for this zone slider to Medium-low for the Local intranet zone, and select Enable Protected Mode if it is not already selected.

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Select the Trusted sites zone.
Set the Security level for this zone slider to Medium-low for the Trusted sites zone, and select Enable Protected Mode if it is not already selected.

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With the Trusted sites zone selected, click the Sites button. The Trusted sites dialog displays.
In the Add this website to the zone field, enter your Historian server's name, formatted as http://your_server_name, then click Add.
For example, if your Historian server is named histserv01, add http://histserv01 to the list of trusted sites.

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Ensure that Require server verification (https:) for all sites in this zone is not selected, then click Close.
Security configuration for the Excel add-in is complete.