You're on your way to the next level! Join the Kudos program to earn points and save your progress.
Level 1: Seed
25 / 150 points
1 badge earned
Challenges come and go, but your rewards stay with you. Do more to earn more!
What goes around comes around! Share the love by gifting kudos to your peers.
Join now to unlock these features and more
Hi @Yvonne YIN, and welcome to the community!
Jira does not have an option natively to restrict the filetypes, only a choice to either allow or block attachments.
Having said that, it seems to be a customized restriction imposed by the Administrators of your Jira site. For example, an app called Attachment Checker for JIRA adds this functionality to Jira Server. Indeed, there will be another that does the same for the cloud.
Have you reached out to them to verify this message?
I hope it helps,