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When / why does Internet Explorer block the installation of an (signed) ActiveX control?

When a user visits a page containing a signed ActiveX control that has never been seen before, I expect IE to ask the user for permission to install the control. But sometimes IE puts a security warning.

For example, consider this site that has test management: http://www.pcpitstop.com/testax.asp

I expect to receive this message - and sometimes, I do:

"The website wants to launch the following add-on:" XXX "with" YYY. If you trust the website and add-in and want to allow it to run, click here ... "

But in IE8 on XP, I usually get this instead:

"To protect your security, Internet Explorer restricted this site to certain content. Click here to select options ..."

What's happening? Any ideas?

Thank!

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2 answers

ActiveX objects can execute code, so there is a security problem, so IE disables scripts with ActiveX objects by default and warns the user

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"The website wants to launch the following add-on:" XXX "from" YYY. If you trust the website and the add-in and want it to run, click here ... "

ActiveX Opt-In Per- ActiveX. , , -. AX OCX, .

IE8 + WinXP: , - . , CAB . .

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Source: https://habr.com/ru/post/1741632/

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