A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hi Adrian,
Sorry for the inconvenience caused at your end.
You mentioned that you can’t add Error bar in the chart, and you can’t see Chart Element button either.
Generally, we can only add error bar to 2D chart. May I know which kind of chart you are using? For your reference: Add, change, or remove error bars in a chart
If you are using 2D chart, to narrow down the issue, we suggest you create a new workbook and check whether issue persists.
If it only happens to specific workbook, can you check with other chart types? To better understand this issue, could please provide the screenshot of this issue and the Excel ->About Excel page for us?
Thanks for your cooperation.
Regards,
Ivy
[Edited by Ivy Guo MSFT, 12:26 PM, September 29, 2020(UTC)]