No, you will not lose any data, files, apps or settings. All of those will be preserved when using the Media Creation Tool.
Download the Media Creation Tool Now
http://go.microsoft.com/fwlink/?LinkId=691209
Right click the MediaCreationTool.exe file then click Run as administrator.
Accept the End User License Agreement:
Select the option Upgrade this PC now if you want to upgrade right away,
Click Next
Wait while Windows 10 setup does one final check to ensure your system is ready.
Windows 10 setup will check if you have enough disk space. If you don’t, review the following article for instructions how to upgrade to Windows 10 Anniversary Update on a system with limited space:
How to Upgrade to Windows 10 Creators Update on a Drive with Limited Space
https://answers.microsoft.com/en-us/insider/wik...
Please note, you have the option of choosing what you would like to keep, which includes personal files, apps and settings.
This will be your screen for a little while. During the installation, your computer will restart several times.
After the first restart, Windows 10 setup will resume. You will notice the setup experience has once again been refined from the previous animated circle. This will be your screen for a while. When complete, Windows 10 setup will restart automatically.
Sign into your account.
Wait while Windows 10 completes application updates and post setup tasks.
That’s it, the Windows 10 Spring Creators Update Update is installed.You can check Windows Update for latest updates, click Start > Settings > Update & security > Windows Update > Check for Updates.
How to prepare your computer before upgrading?
Although updating to Windows 10 version 1803 is a relatively simple process, similar to a repair upgrade; users should perform some basic pre-requisites before initiating the upgrade.
If you are finding it difficult to carry out some of the steps described below, please review detailed instructions how to perform them:
https://www.groovypost.com/howto/prepare-comput...
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.