Without any more specific info about your project we can't tell you much. The 3D tracker is notoriously difficult and prone to all sorts of errors nad certainly things liek the ongoing AE disk cache issues don't make things easier... You could simply be seeing one of those just as you could run into a footage specific issue with some CoDec that doesn't work that well on PC. We simply can't know based on so little information.
Sorry for this issue. Did you ever find a solution? Please let us know if you have or if you still need help.
I have exactly same problem.
I have test same footage on Windows 7/Windows 10 with AE 2017/AE 2018.
Stuck at Solving Camera
But when I use lower spec Macbook and Hackintosh.
Your problem could be the format of the footage. Compressed MPEG footage is notorious for decompression problems. Try transcoding to a proper production format or an image sequence.
but same footage I can work on Mac version, but its not working on windows.
should I still transcoding?