Messageswidgetshell.js causing exceptions in IE


We use hubspot on our website, for example:

We have been seeing a ton of errors from IE, and they appear to be related to messageswidgetshell.js:

TypeError: Object doesn’t support property or method 'assign’
at s(/messageswidgetshell.js:12:2917)
at t.EVENTS.messagesInitialized(/messageswidgetshell.js:1:3540)
at Anonymous function(/messageswidgetshell.js:1:6593)

Any guidance would be appreciated… seems like a bug in your code?


Hi @NicholasHead,

This is a known issue that product is working on. I’ll update this topic with more information when the issue has been resolved.


Hi @NicholasHead,

This should now be resolved. If you continue to see this issue, feel free to reach back out on this topic.


Hi @Derek_Gervais
I am getting same error in IE < 10. Does hubspot support IE < 10??


Hi @manojmohan,

The browser compatibility of public facing content depends primarily on the HTML, CSS, and Javascript used on your site. For public facing HubSpot features/functionality, we strive to maintain support for Chrome, Firefox, Safari, and Internet Explorer 11+. I can touch base with the team regarding this specific issue for some more information; I’ll reach back out in this topic when I have more information.