Erm, the exclusion you're adding will allow any application to create, delete or modify exe and dll files in the location you designated (the network share).
This exclusion will not allow you to install from that location (if that's what you're trying to do).
To flick this around and allow you to install from that location, you need to add the share and installer to the earlier rule (see my screenie attached). This will allow the target process to create exe and dll files in any place on the local machine.