A web-based tool in Microsoft 365 that enables users to quickly create surveys, quizzes, polls, and feedback forms.
Hi!
Welcome to the Microsoft Q&A forum.
The most common cause is that you're signed in with a different Microsoft account or your authentication session needs to be refreshed.
First, you can verify you're using the correct account go to https://forms.microsoft.com. Then, click your profile picture in the top-right corner and confirm you're signed in with the same Microsoft account (or work/school account) that originally created the form.
Do not forget to try opening Forms in an InPrivate/Incognito window
as this bypasses cached credentials and cookies that may be causing the issue.(You can try Chrome and Edge for starters)
If you are receiving and error please provide a screenshot of the exact error message and when does it appear.