Hi<o:p></o:p>

We are using
SharePoint in Office 365. I have built many InfoPath forms and published them
to SharePoint libraries.<o:p></o:p>

I am using IE11 and when I try to save an attachment using the attachment control on an
InfoPath Form I get a critical error, and in the error details Object doesn't support property or method
'getElementsByClassName'<o:p></o:p>

I have gone back to previous forms that I know have worked with attachments before and these fail now.<o:p></o:p>

I do not see these errors in Firefox or Chrome, ironic that non Microsoft browsers work

Any help you can give me would be appreciated<o:p></o:p>

Gary<o:p></o:p>

Hi Gary Stocker,

Please take the following steps to have a troubleshoot.
1.Clear the temporarily files cache to have a check .
Tools\Safety\Delete Browsing History
2.To verify whether it is caused by add-ons ,we can open the Internet Explorer 11 without add-ons to have a check .
To open the Internet Explorer 11 without add-ons :run iexplore.exe -extoff.
If it is caused by the add-ons ,we can enable the add-ons one by one to capture the culprit.
3.If the issue persists ,reset the Internet Explorer 11 to have a check if it is possible.

Tools\Internet Options\Advanced\Reset

Best regards