IIS for localhost?

Is it possible to host a test environment on my local machine with IIS for sites I’m working on?
I have IIS installed with PHP and have several other test sites hosted there so was trying to get Wappler set up for that as well, but am running into some errors.

When I select Test Connection, I get an error: Error writing test file…

I’m suspicous I might have a permissions issue, but not sure how to correct it. Any pointers on how to correct this?
Thanks, Dan