Hello Peter,
it seems, like you had some bad coincidences … Obviously you have enabled some special feature - namely, you have defined of list of webservers (i.e. hostnames and ports), which are allowed to communicate with your Tamino database - and you run against a known problem under Windows: the Data Loader/Unloader doesn’t handle web server restrictions correctly in V4.1.1. This issue is fixed in V4.1.2
So to solve your problem, you need to (temporarily) disable the webserver restriction for your database.
All the best,
Hermann
#API-Management#Tamino#webMethods