Refprop 91 Install [patched] <99% QUICK>

If you have REFPROP 10 installed, you can still use the 9.1 interface for backward compatibility. NIST provides a specific REFPRP91.XLA patch to help version 10 users run older spreadsheets without changing formula syntax.

: If you have issues upgrading to a newer version (like REFPROP 10), NIST recommends completely uninstalling version 9.1, deleting the installation folder, and clearing out any hidden files in your AppData\Local\VirtualStore directory. Missing Installer refprop 91 install

REFPROP 9.1 installs in "Demo Mode" by default. In Demo Mode, the software functions but randomizes output values , rendering it useless for actual engineering work. If you have REFPROP 10 installed, you can still use the 9

Some installations ask for a restart to set environment variables (e.g., REFPROP_PATH ). If you see the prompt, reboot. If not, skip. If you have REFPROP 10 installed

REFPROP 9.1 installs in "Demo Mode" by default. In Demo Mode, the software functions but randomizes output values , rendering it useless for actual engineering work.

Some installations ask for a restart to set environment variables (e.g., REFPROP_PATH ). If you see the prompt, reboot. If not, skip.

Refprop 91 Install [patched] <99% QUICK>

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