Having trouble with a WC web application.

Primary domain controller: pdm.ext
Web server: Compouter name - ws2.pdm.ext, domain: pdm.ext
Data server: Computer name - ds1.pdm.ext, domain: pdm.ext

It works flawlessly when data folder is on web server's local disk. Using mapped drive to data server it fails.

COM server identity is set to administrator. Isn't it then administrator trying to access mapped drive files?

Trying to add users permission to mapped drive, "locations" do not list ws2 at all.
TIA
Cetin