1. I wrote a SharePoint form customization using SPFx ( TypeScript / React ).
2. I have a large pool of external users and each month I will send emails to a portion of those users.
3. The email will contain a link back to a page on my SharePoint site.
4. The page on the site will contain one or more links to list items that require the user to edit and save.
5. When the user clicks on one of those links, the corresponding list item will be displayed using my form customization.
6. The user will edit the information, save the form, and be directed back to the site page with the links to the list items.

Everything works fine up to (and including) #4.
However, when the user clicks on one of those links, only a blank page appears and using F12 I see the following:

—————————————————————————————————————–
Refused to execute script from ‘https://<tenant>/sites/appcatalog/_layouts/15/AccessDenied….’
because it’s MIME type (‘text/html’) is not executable, and string MIME type checking is enabled
—————————————————————————————————————–

The users are all included in the “members” group of the site and should have edit permissions. However, this error message seems as though there is some permission missing from the actual form customization application that I deployed to the app catalog and then enabled on this specific site.

Internal users do not experience this issue, only external users.

Are there permissions I need to configure on a form customization application?

​ 1. I wrote a SharePoint form customization using SPFx ( TypeScript / React ).2. I have a large pool of external users and each month I will send emails to a portion of those users.3. The email will contain a link back to a page on my SharePoint site.4. The page on the site will contain one or more links to list items that require the user to edit and save.5. When the user clicks on one of those links, the corresponding list item will be displayed using my form customization.6. The user will edit the information, save the form, and be directed back to the site page with the links to the list items.Everything works fine up to (and including) #4.However, when the user clicks on one of those links, only a blank page appears and using F12 I see the following:—————————————————————————————————————–Refused to execute script from ‘https://<tenant>/sites/appcatalog/_layouts/15/AccessDenied….’because it’s MIME type (‘text/html’) is not executable, and string MIME type checking is enabled—————————————————————————————————————–The users are all included in the “members” group of the site and should have edit permissions. However, this error message seems as though there is some permission missing from the actual form customization application that I deployed to the app catalog and then enabled on this specific site.Internal users do not experience this issue, only external users.Are there permissions I need to configure on a form customization application?   Read More

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