Block File Types in Notes

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Posted on by opticshrew

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Hello!

This is for Power Apps Portals but the previous forum has been locked.

I want to upload an attachment to notes however want to only allow certain file types. I have read using "Accept MIME Type(s)" and "Restrict MIME Types" could resolve this so have added in the following configuration:

application/msword, application/vnd.openxmlformats-officedocument.wordprocessingml.document, application/vnd.ms-excel, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.ms-powerpoint, application/vnd.openxmlformats-officedocument.presentationml.presentation, application/pdf, application/png, application/jpg, application/mp4, application/mpeg, application/avi

This however doesn't block .exe files, am I missing something?

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Security

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ragavanrajan 7,044 Most Valuable Professional on at

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Hi @opticshrew

I remember there was a bug for MIME types. You can use JS to achieve this. Maybe the following post will help from @hardikv

https://powerusers.microsoft.com/t5/Power-Apps-Portals/Portal-SharePoint-file-type-upload-restriction/m-p/1348143#M9729

Hope it helps.
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opticshrew 193 on at

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@ragavanrajan thanks for the quick reply. I get how this would work for subgrids and other forms but unsure how I could achieve this with notes. Would I add this into the Basic Form Metadata OR onto the Basic Form itself?
ragavanrajan 7,044 Most Valuable Professional on at

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Try this in the custom JS section of basic form. Try it as a onload event.
opticshrew 193 on at

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@ragavanrajan I think I know why it's not working. We've integrated with SharePoint so even if I block the file types in System Settings it doesn't do the check. So my thoughts are these will need to be blocked on a SP side.
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ragavanrajan 7,044 Most Valuable Professional on at

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@opticshrew

I can suggest you use the new File Columns in Portals instead of Notes / SharePoint attachment.

https://docs.microsoft.com/en-us/power-apps/maker/portals/configure/file-column

Hope it helps.
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opticshrew 193 on at

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@ragavanrajan I think that's a suitable suggestion however I don't want to be adding preview features into production AND we have a requirement to upload multiple files (with no upper limit), and believe the cost of using SharePoint is cheaper (overall) than Dataverse.