assigned to modify an InfoPath form (used in some Windows Workflow 3.0 development) which was built by another developer whom we are no longer in contact with. I kept trying to open the form but kept getting an error which said:

“This form cannot be opened because it requires the domain permission level and it currently has restricted permission. Contact the form author to resolve the issue.”

And another message which read:

“Forms that require the domain permission level contain features that access information on a network, such as data connections, linked images, and code.”

What you need to do is – Right click on the file and select ‘Design’.