Permissions for IIS Site – Application Pool / IUSR / AppPool / IISUSR

1. Open IIS Manager -> Check your exact site name, for example:


2. Right Click on site name-> Edit Permissions

3. On Security -> If Group with site name (Book) not exist, your must add it and provide relevant permissions (Write/Modify/Full etc.)

IIS AppPool\Book

Examples (other sites):

IIS AppPool\Site1

IIS AppPool\Site2

4. Ensure now you see these users + permissions:

5. Restart the Site via IIS