Processes in Microsoft 365 Insider for installing preview builds, activating subscriptions, and keeping apps up to date with the latest Insider features.
Hi,DENISE c.1
Welcome to the Microsoft Community, and we'll be happy to help you.
I understand that you can't find the "Attach Files" button in Copilot, this is a feature that is being tested so this may happen. We have had other users report similar issues and they have mentioned that after waiting for a while, the button reappears.
In response to your question, we have provided feedback through internal channels and we will continue to monitor the situation and work to address the root cause.
You can also post your thoughts on the dedicated feedback platform Ideas · Community (microsoft.com)(English platform), where a dedicated developer will follow and comment on your feedback. After sending your feedback, you can share the feedback link in this forum so that other users with similar problems, including me, can vote for your feedback, and the more votes you get, the more likely you are to get attention from the development team.
I look forward to hearing from you and sharing more information.
Best regards
Zoro-MSFT | Microsoft Community Support Specialist