What is the AppData folder in Windows? When should I use it?

Have you ever stumbled upon the mysterious AppData folder while digging through your computer files or trying to get a Minecraft mod to work? Here's everything you need to know about the AppData folder in Windows.

What is the AppData folder?

By default, you will find the program's installation data in C:\ProgramFiles or C:\ProgramFiles (x86) unless a custom path is set during installation.

The AppData folder, short for Application Data, is where programs store data created for users. This includes temporary files, caches, browser sessions, mail storage, user history, etc. Additionally, each user on a PC has their own AppData folder.

This way, multiple users can save their preferences without affecting each other. If you've ever wondered where Windows stores program files and folders for different users on the same PC, now you know.

What is the AppData folder in Windows? When should I use it?
Windows 11 File Explorer shows sub-items of AppData folder

The AppData folder has three subfolders: Local, LocalLow, and Roaming. All three folders contain the same files, but serve different purposes:

  • Local Folder : This folder contains data that is stored on the local computer for a specific user and is not synchronized with other devices. This includes temporary files, caches, and other data that the application will recreate when needed.
  • LocalLow folder : Similar to the Local folder but stores data from low-integrity applications. These applications have limited access to system resources for security reasons, such as private web browsers, email applications, virtual machines, or programs running in sandbox mode. If a low-integrity application is compromised by malware, the damage to the data is limited to the LocalLow folder.
  • Roaming folder : Unlike the Local folder, this folder stores user-specific data such as preferences, configurations, and customizations that can be synchronized across multiple Windows systems in a domain. When you log in to another computer in the same domain with the same account, the Roaming folder data is synchronized for seamless access.
What is the AppData folder in Windows? When should I use it?
Windows 11 File Explorer showing the contents of the AppData folder

While this is the intended purpose of these folders, it is ultimately the application developer who decides what data goes where. Therefore, you may find some application data in the Local folder and some data in the Roaming folder, depending on the developer's choice. However, this inconsistency usually does not affect the application's functionality.

How to Find the AppData Folder in Windows

The AppData folder is located in each user's profile folder in Windows. It's a hidden folder, so you need to be able to see hidden files to access it. Here's how to show hidden files in Windows:

  1. Press Win + E to open File Explorer .
  2. In Windows 11, click View > Show > Show Hidden Items from the toolbar. In Windows 10, open the View tab at the top and select the Hidden Items check box.
What is the AppData folder in Windows? When should I use it?
Windows 11 File Explorer shows the path of the AppData folder

To view the AppData folder, open File Explorer and go to C:\Users\Username\AppData. Here, "Username" is your profile folder. For example, on this computer, the AppData folder is located at C:\users\Tashreef\AppData.

Alternatively, you can use the Run dialog box to access the AppData folder. Press Win + R to open the Run dialog box , type appdata and click OK.

Should I access the AppData folder?

The AppData folder is hidden by default for a good reason. Modifying files in this folder can cause your programs to run, lose saved data, and corrupt some of your system and personalization settings. In more serious cases involving modifications to the Users folder, you may need to reinstall Windows to get your computer working again.

That said, in some cases, it may be necessary to modify files in the AppData folder. This could be adding or removing game mods or deleting temporary files when the app is not running. If you decide to make any modifications, make a backup of the entire folder. That way, if something goes wrong, you can quickly restore the folder to undo any changes.

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