Security setting prevents ActiveX from opening an important site.

Wanting to finish my tax work, a popup says "Security settings prevent an author of ActiveX … from opening this site. How do I get around this, or correct the security settings? Thank you

Presumably you have activeX blocked in IE, you need to change the security settings or use a different browser that doesn’t use activeX (any non-IE browser). That said the site I would have though would allow other browsers other than IE, so it should not force activeX.