Half of 'Rufus is broken' reports turn out to be 'an old Rufus, from a folder downloaded two years ago, is broken'. Knowing your exact build - and how to step back to a known-good one - is the cheapest troubleshooting skill there is.
Rufus makes this easier than most software: it is a single portable program with no installer and no service running in the background. That design makes version checks and rollbacks a two-minute job - as long as you remember the USB stick is a snapshot, not a subscription.
rufus-4.15.exe, with the portable variant marked with a p.Because Rufus installs nothing, rolling back is the reverse of updating: download the build you want and run that file instead. Older stable builds remain available through the project's release history on GitHub and the other-versions links from the official site. Keep your known-good build in a clearly named folder - Rufus stable - and test builds somewhere else, so a double-click in a hurry never launches an experiment by accident. Your settings survive the swap; Rufus stores its preferences separately from the program file.
A USB stick written by 4.14 contains 4.14's answer file, 4.14's customisations and 4.14's bugs, cast in stone. Swapping the program on your PC changes nothing about it. After any rollback or update that you did because of a problem, rewrite every stick that problem touched - especially unattended and silent-install media, where the fault lives in the generated answer file itself. This single habit explains most 'but I updated and it still fails' mysteries.
Roll back to escape a specific broken behaviour, not as a lifestyle. Older builds lack newer ISO support and security fixes - the 4.15 release, for example, also fixed a parser vulnerability and a crash on Snapdragon X machines. If the newest build fixed your bug, the correct direction is forward, and 'rolling back' to 4.14 to dodge a 4.15 annoyance would re-import a confirmed install-breaking bug. Choose builds by changelog, not by nostalgia.
Watch the video to see the 4.14-era program in action, and check the title bar of your own copy before your next install.
▶️ Watch Full VideoThe file name carries the version - rufus-4.14.exe is older than rufus-4.15.exe, and the letter p marks the portable build. Delete or archive the ones you no longer intend to use; a stray old build launched by habit is how fixed bugs come back.
No. Each USB keeps the exact files and answer file written by the build that created it. To change a stick's behaviour you must recreate it with the build you now trust.
Yes - preferences are stored outside the program file, so a stable and a test build on the same PC will both see them. That is convenient, and also one more reason to keep test builds in their own folder rather than overwriting your known-good copy.