Fixed “The installation package could not be opened” issue

Some Windows 10 users are complaining about problems installing a certain package on their computer. Every time they try to run the installer, the installation process stops with the error message “This installation package could not be opened”. This problem is usually due to the Windows Installer service stopping running on the affected computers. If you encounter the same problem, apply these workarounds first, and if they don’t do much good, apply solutions.

What is the cause of the “Installer package cannot be opened” error?

What is the cause of the "Installer package cannot be opened" error?

After receiving many reports from many users, we decided to investigate the problem and offer a set of solutions to solve it completely. We also examined the causes of the error and listed them as follows.

Installation service: this error is caused by disabling the installation service. The service is responsible for installing all packages on your computer, and when it stops, it also prevents packages from being installed.

Administrator privileges: Some installation packages may require special administrator privileges to install. Without these privileges, the installer may fail.

Now that you have a basic understanding of the nature of the problem, let’s move on to solving it. Be sure to follow them in the order listed to avoid conflicts.

Steps to fix the “Installation package failed to open” error

Steps to fix the "Installation package failed to open" error

Make sure that the application is no longer blocked.

Depending on your security settings, Windows 10 may sometimes block the installation of certain apps, resulting in the “This installation package cannot be opened” error. To solve this problem, simply find your installation file and unlock it. It’s pretty simple:

  1. Locate the problematic configuration file, right-click on it, and choose Properties from the menu.
  2. When the Properties window opens, click the General tab and look for the Unlock checkbox at the bottom. Make sure that the Unlock option is checked.
  3. Now click Apply and OK to save your changes.
  4. When a confirmation message appears, click Next.

After unlocking the installation file, try running the application again. If you don’t see an unlock option, it means that the file is already unlocked and you need to use another solution.

Temporarily disable your antivirus program.

Your antivirus program is one of the most important applications on your computer, it protects you from dangerous and malicious files. However, it can also interfere with some files. In this case, you may get an error message This installation package cannot be opened.

Depending on the user, you can solve this problem by disabling your antivirus software. After disabling your antivirus software, try running the installation file again and see if you get the error message.

Don’t forget that Windows 10 has built-in Windows Defender antivirus protection, so your PC remains safe even if you deactivate third-party antivirus software.

If disabling the antivirus software solves the problem, you should check its configuration and try to find the cause of the problem. However, if this error occurs frequently, you should try to update your antivirus. In the worst case, you will have to switch to another antivirus software.

Make sure that the Windows Installer service is running.

The Windows Installer service must be running to install the application. However, sometimes this service may be disabled, which can result in an error This installation package could not be opened. You must run Windows Installer manually to correct this error. This is relatively easy:

  1. Press Windows + R and type services.msc. Press OK or Enter.
  2. You will now see a list of all available services. Find the Windows Installer service and double-click it to open its properties.
  3. If possible, set the startup type to “Automatic”. Now check the status of the service. If the service is interrupted, click Start to start it. Then click Apply and OK to save your changes.
  4. Close the Service window and try installing the application again.

The installation process is closely related to the Windows Installer service. So, if you encounter this problem, be sure to check if this service is working.

Modifying the registry

According to users, this problem can be solved by simply modifying the registry. Changing the registry can be potentially dangerous and lead to system instability, so we advise caution. To modify the registry, follow these steps :

  1. Press Windows + R and type regedit. Press OK or Enter.
  2. When the registry editor opens, navigate to HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlFileSystem in the left pane.
  3. Optional: Right-click the File System key and choose Export from the menu.  Enter the name of the file you want, select the location and click Save. You can use this file to restore the registry if something goes wrong. This step is optional, but it’s always a good idea to backtrack before making changes to the registry.
  4. After going to the file system key, find DWORD NtfsDisable8dot3NameCreation in the right pane. Check the data value for this DWORD. If Data is not set to 0, double-click NtfsDisable8dot3NameCreation to open its properties.
  5. Now set the Data value to 0 and click OK to save your changes.
  6. Find DWORD Win31FileSystem and check its Data value. If the data value is not set to 0, change it using the same methods as above.
  7. Close the registry editor.

After making the changes, try restarting the installation. If new problems arise after making changes to the registry, you can always restore it by simply running the backup file created in step 3.

Creating a new user account

According to users, you can fix the bug This installation package cannot be opened simply by creating a new user account. It is possible that your regular user account did not have the required permissions or was corrupted, which can lead to this problem. To solve the problem, you need to create a new user account and try to install the application from that account:

  1. Press Windows + I to open the Settings app.
  2. After opening the Settings app, go to Accounts and select the Family and Others tab. Under Other People, click Add another person to this PC.
  3. Click I don’t have an ID for this person.
  4. Now click Add a user without a Microsoft account.
  5. Enter the desired username and click Next.

Once the new account is created, exit the current account and go to the new account. Now find the installation file and try to run it. If you are successful in installing the app, you can go back to your primary account and try to run it again.

Then you can delete the account you just created because you don’t need it anymore. Some users report that this error occurs because they have a special character in their username. Some installation files cannot handle special characters, so they give this error message. In this case, you must create a new account with a name containing only alphanumeric characters and use it to install the problem application.

Activating a hidden administrator account

If creating a new user account does not fix the error This installation package cannot be opened, you may need to activate the hidden administrator account. This is quite simple:

  1. Press Windows + X to open the Win + X menu. From the menu, select Command Prompt (Admin).
  2. Once the command line opens, type net user administrator /active: yes.
  3. Close the command line.

This will activate the hidden admin account. Now, exit your current account and switch to the new administrator account. Then find the installation file and try to install the application again.

If you are successful in installing the application, return it to your primary account. After you return to your primary account, verify that the application is working properly.

If it does, run the command prompt as an administrator and run the net user administrator/active: no command to deactivate the administrator account.

Frequently Asked Questions

  1. Make sure that the application is not blocked.
  2. Temporarily deactivate your antivirus program.
  3. Check if the Windows Installer service is running.
  4. Modify your registry.
  5. Create a new account.
  6. Activate the hidden administrator account.
  7. Move the installation file to the root directory.
  8. Create a .bat file.

  1. On the above page, click on the green "Run Now" button.
  2. Run the downloaded program.
  3. Click the Accept button.
  4. Microsoft Fix It will scan your computer for installation and uninstallation problems with Windows.
  5. Select "Detect problems and let me choose patches to apply."

Tips for troubleshooting problems that occurred during the installation of Office products. Go to "Regional and Language Options" in the Control Panel and click the "Languages" tab to check the box under the "Additional Language Support" subtitle that reads "Install files for East Asian languages" and click "Apply -> OK".

This installation package is not supported by this type of processor. Please contact the vendor of your product. This error indicates that the machine is a 32-bit operating system running a 64-bit MapInfo Pro installer. To run on a 32-bit Windows operating system, the client must install 32-bit MapInfo Professional software.

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Mark Ginter is a tech blogger with a passion for all things gadgets and gizmos. A self-proclaimed "geek", Mark has been blogging about technology for over 15 years. His blog,, covers a wide range of topics including new product releases, industry news, and tips and tricks for getting the most out of your devices. If you're looking for someone who can keep you up-to-date with all the latest tech news and developments, then be sure to follow him over at Microsoft.