Moving data from W7 laptop to W10 laptop

A tip about Installed programs: the issue with them is that when installed the files are copied to either C:\Program Files or C:\Program Files (x86) [for older 32-bit], Registry entries are created so Windows knows how to run them, icons are put in their proper place and support files are copied to Windows. Moving a program can be possible but one would have first copy from the old computer with it running and pasted into the same place on the new one. When trying to run a program there will be errors about not find particular files which then have to be copied from the old and pasted in the same place in the new and icons/shortcuts pasted/created. The process can require dedicating numerous hours to do it. Registry entries are something else and one misstep can kill the operation of Windows.

Thunderbird is simple use MozBackup - Backup tool for Firefox and Thunderbird
How much data are we talking about and what sort of data?
If there isnt to much data install Google backup and sync pick the data on old pc and setup Google on new pc its not fast but it will synce 7-10 and upload to cloud its very simple to do you store photos on Google for free and have 15 gig space for other files it means you have a backup off site

Curious said:

Unfortunately that's what I thought. I thought I recalled there were programs that did it for you, but I guess not.
Thanks

There was one and still is called LapLink. I haven't needed it in several years so have no recommendation one way or another. Last one I saw came on a CD and included a flat Ethernet cable, it was either a straight-through or cross-over used to connect one computer directly to the other. The cable I have that came the CD is still sealed in the package, could locate my cable tester to find out tomorrow [I make cables as needed, harder to do now with the neuropathy in my fingers].