THERE HAS BEEN AN ERROR WHILE LOADING THE FORM. A REQUIRED RESOURCE COULD NOT BE DOWNLOADED. TO TRY TO RESUME THE DOWNLOAD, REFRESH THE PAGE _ INFOPATH

I found this to be a strange permissions issue.
After going through loads of forums and blogs with people having the same or similar issues.
I tried all the recommended solutions but none of it worked for me.

The only time I did not receive this issue was when I logged into IE with the Admin User.
But this solution was not going to work for everyone.

As a solution / workaround I had to configure IIS,

• the application pool identity being the Admin User
• Update the Basic setting of the site to use "Application user (pass-through authentication)" as the Path Credentials

Steps:

1. Open IIS
2. Click on Application pools
3. Right click on the application pool and select "Advanced Setting".



4. Then select Identity.
5. Select "Custom account" and set it to the Admin user.

6. Select Ok.
7. Update the Basic setting of the site. Select the site.
8. Click "Basic Settings".

9. Click "Connect as..."
10. Select "Application user (pass-through authentication)"