Windows NT 4.0 SP6a High Encryption version missing

edited July 2021 in Software
Hi. I obtained Windows NT 4.0 Server and SP6a from WinWorld. OS works, but I can't install the service pack. It says "You have chosen to install a version of the Service Pack with Standard Encryption onto a system with High Encryption. This is not supported."
Edit: Apparently the high encryption version is on
Can someone upload it?
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