Hello!

The Windows 10 operating system has a new type of protection. All applications, without digital signature publisher are blocked by default. This prevents the user from running a virus or malware.

When trying to launch a dubious application, the user sees the following window:

This feature can be disabled, but by doing so, you will voluntarily give up excellent protection. If children or novice users work with a computer, they can infect the computer with viruses, corrupt or destroy data on disks, and completely disable the operating system. I do not recommend that you disable this protection, instead download latest versions the applications you need. They are already digitally signed and Windows 10 will not block them. If you nevertheless decide to disable Windows protection 10, proceed to the instructions below.

Windows 10 blocked the application (instructions):

1. While on the computer desktop under the system administrator user, press the Windows R key (if you don’t know what the Windows key is, there is an article for you: ). In the window that appears, write "regedit" and press Enter:

Click "Yes" when security asks if you really want to run this application.

2. Now you are in system application"Registry Editor" (be sure to read our article before changing), navigate through the registry tree as shown in the picture below:

HKEY LOCAL MACHINE -> SOFTWARE -> Microsoft

3. In the "Microsoft" section, select: Windows -> CurrentVersion -> Policies -> System, click on "System", find the "EnableLUA" item in the list on the right:

4. Double-click on the "EnableLUA" item with the left mouse button, change the parameter value from "1" (enabled) to "0" (disabled), click "OK":

5. Windows 10 will prompt you to restart your computer for the changes to take effect:

If you have any questions or need clarification, do not hesitate to

The main user is anyone operating system(OS) Windows family is the administrator. The administrator sets security rules for other OS users and monitors their implementation. It is he who decides which applications the user can run and which not.

All installed programs in Windows, by default they are executed with user or junior administrator rights. This is why some applications simply may not have enough rights to operate, which is why the message “The administrator has blocked the execution of this application” appears.

Causes

The following errors indicate that the application is blocked by the administrator:

Block message window

Second view of the error message window

Appears in the following situations:

• The administrator has blocked the application from running;
• The application has an outdated digital signature.

A digital signature is a unique certificate for an application that certifies that it is safe and functional. Issued by Microsoft, after registration by the manufacturer and updated annually. If the certificate is expired, an error is inevitable.

In Windows 7/8/10, the User Account Control (UAC) service ensures that the user runs only trusted applications.

How to fix

Before going into system settings, try running the application with administrator rights. To do this, right-click the application shortcut and select “run as administrator” from the drop-down menu.

Running the application as administrator

If this does not help, you need to check the group policy scripts to prevent the application from starting. This can be done by launching the appropriate snap-in using the run command:

Click Win+R and enter gpedit.msc.

Login to the editor group policy on Windows 10

The Group Policy Editor window will open:

Group Policy Editor window

User Configuration -> Administrative Templates -> System.

In the right window, select “ do not launch specified Windows applications».

Go to the specified path

Call context menu on the policy and select " change» or click on the appropriate link.

In the window that opens, select " Disabled" or " Not specified" And click OK.

Parameter changes

To apply the settings, restart the computer.

Disabling UAC in Windows 10

If the error message does not disappear, then disable UAC through the Local Security Policy snap-in. For this:

Click Win+R

Calling the Local Security Policy snap-in in Windows 10

Enter the command secpol.msc and click OK.

The Security Policy snap-in opens

Security Policy snap-in

In the left editor window, open:

Local Policies -> Security Policies

Find the item " User Account Control: All administrators operate in admin approved mode» and call properties (using the right button).

Go to the specified path

In properties, select the value " Disabled" and click OK

Parameter changes

Another way to disable UAC in Windows 10 is by using the registry. It will do Windows users 10 edition Home.

Press Win+R, enter regedit.exe and click OK.

Open the menu item HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System and find the EnableLUA key

Disabling UAC in Windows 10 through the registry

Set it to 0, or leave it unset.

Changing a parameter

This will also disable UAC.

You must reboot to apply the changes.

I won't be original if I say that Microsoft's constant desire to make its OS more secure creates a proportionate number of problems for ordinary users. So, in Windows 10 When installing (launching) some completely legal programs, a warning window appears " This application has been blocked for security purposes" (option: " This publisher has been blocked and its programs will not run on your computer"). Moreover, blocked software is not installed or launched even with administrator rights. The reason for this system behavior lies in the User Account Control mechanisms ( UAC), blocking applications with an expired or revoked digital signature. Below you will find two simple ways how to circumvent this ban, i.e. Unblock a program blocked by the system for security purposes.

Disable UAC via Control Panel. The fastest way to disable User Account Control, without manually editing the registry, is this: open the search window next to the Start menu and type UAC → in the search results, click on " Change User Account Control settings" (screenshot) → to completely disable UAC in Windows 10, in the "User Account Control Settings" section of the Control Panel that opens, move the slider to the lowest position " Never notify" → "OK" (screenshot below).

Disable UAC through the Run window. Using the key combination " Win + R" call the Run dialog box and enter (copy) the command UserAccountControlSettings → "OK"→ move the slider to the lowest position" Never notify" → "OK".

After successful installation of the unlocked software, do not forget to return UAC to standard settings!

Removing a program's digital signature

You can view the composition of the digital signature in the file properties by switching to the “Digital Signatures” tab, which is present in the properties of most executable files popular applications(screenshot). If you are confident in the security of the application you are installing (launching), then it makes sense to simply remove embedded digital signature.

This cannot be done using Windows, so I suggest downloading a free portable utility FileUnsigner→ using the Drag&Drop method, drag the desired EXE-file to the executable file from the downloaded archive (screenshot) → check that the “Digital Signatures” tab has disappeared.

All that remains is to evaluate the results of some short efforts by running the unlocked program in the environment Windows 10 .

With each subsequent operating update Windows systems 10, users notice that the number of legal and safe programs that the system blocks increases. At the same time, the applications neither run nor are installed, and it is impossible to perform any manipulation even with Administrator rights. The software does not start, and a message appears on the monitor screen stating that “This application has been blocked for security purposes.” The reason for this system behavior lies in the User Account Control (UAC) mechanisms that block third party applications with an expired or revoked digital signature. Therefore, let's look at ways to unlock an application in Windows 10.

Disabling UAC to Unblock an Application

If you are unable to install programs on Windows 10, the first thing you need to do is disable User Account Control. To do this, do the following:

• Click “Start” and enter the following query in the search bar: “Change User Account Control settings” or simply enter “UAC”.

• A new window will open. Drag the slider to the “Never notify” position.

It's important to note that UAC can be disabled using Registry Editor. To do this you need to do the following:

• Press “Win+R” and enter “regedit”.

• The Registry Editor window will appear. Go to the branch “HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System”. In the window on the right we find the “EnableLUA” parameter and set it to “0”.

• After disabling User Account Control, you will be able to install many applications without any blocks.

Removing a digital signature as a method to unlock an application

In many cases, application blocking occurs when the system encounters software that has an expired digital signature. If you are sure that your program is completely safe, you can remove the digital signature. However, before deleting it is worth checking for its presence. To do this you need to do the following:

• Open the file that needs to be checked. Next, select “File”, “Information”, “Digital signature information”.

• Once you are sure that the signature is there, you should delete it. To do this, open the FileUnsigner program and read the instructions on how to remove a digital signature using this software.

After removal of this element you can install programs on a computer with Windows 10. The system will not block the launch of applications and the software installation file.

Using Local Security Policy to block and unblock software

Another way to block and unblock an application is to use the Local Security Policies tool. To create exceptions for a program, do the following:

• Press “Win+R” and enter “secpol.msc”.

• A new window will open. Select “Security Settings”, “Application Control Policies”, “AppLocker” and select “Executable Rules”.

• In the empty space on the right, right-click and select “Create rule...”.

• The New Rules Wizard window will open. Click “Next”.

• Another window will appear. Here we need to check “Allow” or “Prohibit” the launch of the program. Leave the “All” users section and click “Next”.

• In the next window we select “Publisher”, since we want to block or unblock the program.

• In the new window, click on the “Browse” button and specify the path to the application file.

• After adding a file, use the slider to indicate the level of trust in the file. Either we allow it to run or we block it.

• Click on the “Create” button. The rule is ready. Now, for the system to accept it, you should launch a command line with Administrator rights and enter the following: gpupdate /force. Local policies will be updated. The software will be unlocked or blocked (depending on what you specified).

Thus, any setting of rules for a particular program allows it to be launched or blocked on a computer with Windows 10, which, in principle, is what we wanted.

The Windows 10 operating system is full of surprises, and they are not always pleasant. Active computer users often have to deal with various errors, intuitively clear solution which Microsoft does not offer in its operating system.

When launching games and applications on the Windows 10 operating system, the user may see the message “This application has been blocked for security purposes.” This error notifies that the computer administrator has blocked the operation of the application in order to increase the security of data on the computer, and it is suggested that you contact the administrator for a solution. However, the problem is that often the computer administrator himself, who is its only user, encounters such an error. In this article, we will consider the question of what to do if an application in Windows 10 is blocked for security purposes.

Important: Before proceeding with the instructions below, be sure to ensure that the blocked application is not malicious. The error in question often occurs when the user tries to run software that can harm the operating system.

Why is the application blocked for security purposes?

As you know, when you launch any application, the Windows operating system checks its digital signature. Depending on the legitimacy of this signature, it decides to launch the program without additional warning dialog boxes. Accordingly, if there are problems with the digital signature of a program, for example, it is fake or prohibited, when you run the executable file, the error “This application has been blocked for security purposes” will appear.

Please note: Depending on the version of the Windows 10 operating system, the “This app has been blocked for security reasons” error may appear differently.

The digital signature may not be recognized by the operating system even if its validity period has expired. In such a situation, the indicated error will also occur, but such a program, most often, does not pose a potential threat. There may be situations where the error occurs even when running programs downloaded from the official Microsoft website, for example, old drivers or utilities.

How to fix the “This app is blocked for security reasons” error

To correct the situation and still run the program, you can use one of the five methods discussed below.

Please note: If one method does not help, move on to another. They are ranked lower in complexity, starting with the easiest.

Using the command line

The easiest way to run a program that the system considers potentially dangerous is to use the command line. To do this you need to do the following:

Important: The Command Prompt should not be closed until you stop using the problematic application. If you immediately close the command line, the program may crash and you will have to repeat the procedure.

Running the program through the built-in administrator account

Another fairly simple way to run an executable program that produces the error “This application has been blocked for security purposes.” However, it is important to note that the method discussed in this section is suitable only in cases where the installation file cannot be launched, and not the application itself.

The method is to boot the Windows 10 operating system under an account. Having logged into the system under it, you just have to standard mode run the installation file, and the error should not occur.

Using the Local Group Policy Editor

Another the right way get rid of the error “This application is blocked for security purposes”, simply disable the ability to block applications in cases where they have problems with digital signatures.

Important: Use this method extremely dangerous for an inexperienced user. When you turn off notifications about possible problems with programs, in the future the operating system will no longer respond to other applications, some of which may be malicious.

It is worth noting that only owners of the Windows 10 Professional or Enterprise operating system can use the Local Group Policy Editor. On basic system options this utility absent.

Using the Local Group Policy Editor, you can disable application blocking at startup as follows:

After completing the steps above, restart your computer for the changes to take effect.

Via Registry Editor

The next way to get rid of the “This application is blocked for security reasons” error is to use the Registry Editor in Windows. Unlike the previous method, this method works on any version of the Windows 10 operating system. Before you start editing the registry, we recommend that you be able to return the system to it if errors occur.

In the registry, to solve the problem with a blocked application, you will need to do the following:

Important: By changing the value of this parameter to 0, you expose your computer to the risk of infection by malware. software. We recommend returning the value to 1 when work with the program that did not start due to an error is completed.

By removing the digital signature of the application

Another option for getting rid of the “This application is blocked for security purposes” error is to remove the digital signature from the application. If you remove the digital signature, the application will launch without an error message. Many applications cope with the task of removing a digital signature, but it is better to use an option that has been proven over the years - the program.

Download the application to your computer and drag the problematic application onto the FileUnsigner.exe file. After this it will open command line, which will indicate the results. If everything went as expected, the user will see the message Successfully Unsigned, which indicates that the application’s digital signature has been deleted.

After this, you can run the program, and the error discussed in this article should not occur.