QlikView's access point becomes unavailable when large files are getting distributed

While a large distribution (for instance: a file larger than 50GB) is ongoing, the Access Point becomes unavailable.

Log files show errors like: "Request failed: The specified network name is no longer available"

Using PerfMon  (How to set up performance monitoring for QVS (perfmon)) and other tools could be a way to check the resource allocation, to see how much the QlikView Server is suffering because of the large transfer.

However, a quick solution that can be tested and that will usually prove immediately effective is to change the distribution of the document from "Distribute to QlikView Server" to "Distribute to Folder". This way the QVS won't have to take care of the transfer, which will be in the hands of the OS.