Stop using Microsoft's shitware operating systems? You DO NOT control
your own PC as the evidence clearly shows. MS will allow you to have
the software that IT deems ACCEPTABLE.
Honestly, I'm surprised when ANYONE bothers to mix cryptography and
Windows. You don't have any idea what your OS is doing in the
background. Nobody else does either because all of the source code for
windows is kept hidden away from you plebs.
For all you know, Windows might keep an unencrypted copy of your files
in the swap space or maybe it uploads it to the cloud. Maybe it does
nothing with it. Maybe the RNG (random number generator) is shit..
Nobody can check because the code is secret.
If you really care about your security, stop using Windows.