Windows’ security feature blocks certain files, especially the ones downloaded from the internet. In this case, you’ll have to unblock your app file before the app can launch.

You can do that using a Windows option, as explained below

1. Right-click your app and choose Properties from the menu
2. Access the General tab in Properties
3. Enable the Unblock option

4. Select Apply followed by OK to save your changes
5. Launch the app

Run the App Using Command Prompt

If you have trouble launching your app from File Explorer, try accessing the app via Command Prompt. This method uses your app’s path and allows you to access the app.

1. Right-click your app’s shortcut and choose Properties
2. Access the Shortcut tab and copy the path displayed in the Target box

3. Close Properties by selecting OK
4. Right-click the Start menu icon and select Command Prompt

5. Press Ctrl + V on the Command Prompt window to paste your app’s path. Then, press Enter

6. Command Prompt will launch your specified app

Run the App as an Administrator

One reason Windows displays a “This App Has Been Blocked by Your System Administrator” error is that the app doesn’t have required admin rights. Some apps need those permissions to function fully.

In this case, you can run the app as an admin and see if that fixes the issue.

1. Right-click your app and choose Run as administrator

2. Select Yes in the User Account Control (UAC) prompt

If your app launches successfully in admin mode, make Windows always launch this app shortcut with admin rights as follows:

1. Right-click your app’s shortcut and choose Properties.
2. Access the Shortcut tab and select Advanced.

3. Enable Run as administrator and choose OK

4. Select Apply followed by OK on the Properties window

From now on, Windows will always launch your specified app shortcut with administrative privileges. If yours isn’t an administrator account, ask your PC’s admin to turn your ordinary account into an admin one using the following steps:

1. Open Run by pressing Windows + R at the same time
2. Type the following in Run and press Enter: netplwiz
3. Select your account (the non-admin one) and choose Properties
4. Open the Group Membership tab.
5. Turn on the Administrator option and select Apply followed by OK at the bottom.

6. Select OK on the User Accounts windows
7. Log in to the account you just turned into an admin account and launch your app.

Disable Microsoft Defender SmartScreen

Microsoft Defender’s SmartScreen feature screens your apps and files for various threats. The feature may have identified your app as a potential threat, preventing you from launching the app. If you’re sure your app’s source is trustable, you can disable Windows SmartScreen and allow your app to open.

1. Open the Start menu, search for Windows Security, and select the app in the search results
2. Choose App & browser control
3. Select Reputation-based protection settings

4. Turn off the following options:Check apps and files
   SmartScreen for Microsoft Edge
   Potentially unwanted app blocking
   SmartScreen for Microsoft Store apps

5. Launch your app.