Windows automatically results in a dedicated home/profile folder for every user account you create. By default, the specific account folder is the same as the username. Since the home folder contains all the user-specific folders like pictures, documents, downloads, etc., Windows won't allow you to easily change the folder name as you wish. If you ever wish to, here's stick to the below steps to rename user profile folder in Windows 10.

Basically, you will find four major what exactly you need to complete. That's, produce a local administrator account, rename the user account, rename the user profile folder, and lastly, map the renamed folder to the user account using the registry editor.

Just follow the below steps out of the box and also the folder will be renamed in a couple of minutes.

Caution: Before proceeding, produce a system restore point. This helps you restore Windows should you mess up anything.

Steps to Rename Account Folder

Though the process of renaming the home folder is fairly simple, there are a number of steps. So, to create things simpler for you, I've divided the steps into four major sections.

1.1 Create a New Local Administrator Account

While you are logged to your user account, you can't rename your personal account folder. This is correct even if you are the administrator. As a result, we need to create another local administrator account. Once created, we will use that account to create all of the necessary changes. Of course, you can enable hidden administrator account too but the below technique is recommended.

Note: Should you already have another local user account with administrator privileges then you can skip this.

Open the settings app and visit "Accounts -> Family & other users" page. Around the right panel, click the "Add someone else to this PC" button.
In case your PC comes with an active web connection, Windows 10 asks you to log into Microsoft account. Since you want to produce a local account, click on the "I do not have this person's sign-in information" link.
Within the next screen, click on the "Add a user without Microsoft account" link.
Now, enter a brand new username and password. Setup the security questions and click on the "Next" button.
The new user account will be created like a standard user. So, click on the user account in the settings app after which click on the "Change account type" button.
Select "Administrator" in the dropdown menu. Click "Ok" to save changes.
This is how it ought to look like in the settings app after changing the account type.
Reboot Windows.

1.2 Rename Old User Account

The user account name and also the home folder should have the same name. So, if you want to rename the home folder, you need to change the user account name too.

Log in to the new user account.
In the new user account, press Win + R, type lusrmgr.msc and click on the "Ok" button.
The above action will open the neighborhood Users and Group tool. Here, go to the "Users" folder, find your user account, right-click on it and select "Rename".
Type the brand new user name you want to provide the user account. With my case, I'm changing "WindowsLoop" to "WindowsLoopCOM".

1.3 Rename Windows Home Folder

Now, open file explorer and go to C:\Users. RIght-click on your account folder and select "Rename".
Type in the same name you utilized in step 11. With my case, the new name is "WindowsLoopCOM".

1.4 Map the Renamed Folder via Registry Editor

Next, press Win + R, type regedit and then click the "Ok" button. This action will open the registry editor.
In the registry editor, copy the below path, paste it in the address bar and press Enter. On the left panel, you will notice folders with long SID Strings.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList
Every user account in your system has its own folder with a unique SID string. So, click each SID string folder, take and check out "ProfileImagePath" value in the right panel and find out whether it corresponds to your profile folder.
When you found the target folder, double-click around the "ProfileImagePath" value. In the Edit Value window, enter the new profile folder name and then click the "Ok" button.
This is how it should look like within the registry editor once you change the ProfileImagePath value.
Close the registry editor.
Reboot Windows.
Log to your regular user account also it ought to be functioning without any problems.

Just to test if everything is OK, I've downloaded just one file from the internet. Since everything was very successful, the downloaded file is saved in the Downloads folder of the renamed home folder.

Once everything is working fine, you can delete Windows user account you created earlier.

That's all. It is that simple to rename user profile folder in Windows 10.