Have To Re-install Applications When Upgrade?

do I have 2 re-install all my applications I have running on windows 7 PC when I upgrade to windows 10?

you shouldn't if the upgrade process is successful it migrates current settings and programs and apps


just my opinion
not to sway you from upgrading but do a lot of research before you take the plunge... and definetly make backups of your personal files and documents.... there are some users out there that had 7 upgraded to 10 then some of their devices wasn't responding like the mouse and sound and dvdrom especially the ones with AMD processors....