@sns
Please follow below tips to troubleshooting the issue.
- The datasheet component is not available in 64-bit versions of Office. You need to install 32-bit versions of Office.
- Add the SharePoint site to trusted site.
- You can only use 32 bit version of IE 11 to use this component. And you need to enable ActiveX controls in Internet setting.
Reference:
IE11 prevents ActiveX from running - Make sure your IE enabled the Office add-on: Microsoft Office List 1x.0. Open Internet Explorer, select the Tools button. Then select Manage add-ons. Under Show, select All add-ons and check.
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