When planning ahead for this major new operating system roll-out Microsoft seemingly thought of everything. They even thought far enough ahead to give users a 30 days option of using the new OS and still having the ability to roll back to their previous version of Windows if things went wrong with the upgrade or if for some reason the user just wasn't happy.
Now this process might seem a bit seamless, but we have seen reports from Gizmodo and other tech sites that this may not be as cut and dried a roll-back as it may seem. So we are going to try our best to help you out with the process and issues we have seen.
First and foremost, back-up your data! I know we harp on this all the time, but you just never know what might happen and you always want to be safe with anything important! Now that that is done getting the rest started is as easy as going to the start menu, clicking settings and heading over to the Update & Security option then choose Recovery. From here you should see the option to 'Go Back' to whatever version of Windows you were previously running, in this case Windows 7.
From there you'll see a new page with few feedback options, just select a reason, any will do, for the rollback and then click Next. After a warning and a confirmation, the rollback process will start. The process can take as short as a few minutes to about half an hour depending on the speed of your computer.
Some of the apps might appear to be deleted at first, or might not even start (like Google’s Chrome browser), which means you’ll have to reinstall them. Make sure to search for them on your machine first though, as some missing apps might still be there.
Once the process is complete is when you may start to see some issues. Due to the roll-back process some apps may appear to have been uninstalled and may need to be reinstalled, and some of the settings changes you've made in applications may also be lost. Also, make sure you remember the log-in password for the previous version of Windows since the password for Windows 10, if you have changed it, will not work!!
As Gizmodo pointed out, this doesn't necessarily mean that Windows deleted any of these apps or the associated files. Generally speaking they are still on your computer, it is just that Windows has lost track of some of the file associations (in some cases) and the app locations. So in most cases you can still navigate to the specific folders with Windows Explorer and launch them, but it may simply be easier to re-install each app.