Hi,
Welcome to the Forum.
I have a really urgent issue:
please, tell me - which is the correct form: window technologies or windows technologies (taking into consideration the fact, that we speak about wooden windows, not Microsoft Windows)
Generally speaking, although not always, when a countable noun like this is used like an adjective, the singular form is used.
eg 'He works as a car salesman', and not 'He works as a cars salesman'.
Best wishes, Clive