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Restrict Attachment File Type Using Content/Script Editor

Vswald Bi

Hi, all,

I want to forbid user to upload txt files as attachment to a sharepoint list. As I can't manage the whole site, I'm thinking using content/script editor to acheive this.

I'm a super newbie to coding...could anyone help? thanks.

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Jefferson S. Motta6y ago
You need to the opposite from this: https://powerusers.microsoft.com/t5/Building-Flows/Question-Only-move-attachment-to-SharePoint-when-there-s-1-pdf/td-p/72757