Thanks for the information, I did save the certificates as .p12 files. I don't really know how to use the cloud, but will put them on a USB drive for safety. The office computer which I have TQSL on is probably 10 years old or more, and I did have to replace the power supply once, so it probably won't last too much longer.
I have a replacement computer already sitting in a box but this one just keeps working and the XYL and myself are familiar with WIndows 10. Windows 11 did look a little different when I was testing out the replacement computer.
73 John AF5CC