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When I use ArcMap GIS 10.4 with Firefox ArcMap crashes and the error report says an ActiveX control on this page might be unsafe to interact with other.........

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When I use ArcMap GIS 10.4 with latest version of Firefox, ArcMap crashes and the error report says an ActiveX control on this page might be unsafe to interact with other parts of the page. Do you want to allow this interaction? Then it crashes!!!! Please help. This started happening with the latest Firefox update. Also can't find any ActiveX add-ons or extensions....see screenshot below

When I use ArcMap GIS 10.4 with latest version of Firefox, ArcMap crashes and the error report says an ActiveX control on this page might be unsafe to interact with other parts of the page. Do you want to allow this interaction? Then it crashes!!!! Please help. This started happening with the latest Firefox update. Also can't find any ActiveX add-ons or extensions....see screenshot below

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Firefox doesn't use ActiveX, which is only used by Internet Explorer and other web browsers that are based on IE.

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Ok then why did ArcMap work before with Firefox. Also big problem not to be compatible.....force me to use IExplorer. There must be a workaround. Firefox should check in with Esri.