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We all have various third-tiệc ngọt applications on our PCs, but sometimes issues while installing applications can occur.

According to lớn users, they are receiving the This installation package could not be opened error message while trying khổng lồ install certain applications.

Luckily, there are ways khổng lồ fix it on Windows 10.

Steps to fix installation package opening issues

Solution 1 – Make sure that the application is unblocked

Depending on your security settings, Windows 10 can sometimes bloông xã certain applications from installing, causing the This installation package could not be opened error to appear. To fix this problem, you just need to lớn find your thiết đặt tệp tin and unblochồng it. This is rather simple:

When the Properties window opens, go khổng lồ the General tab và locate the Unblock checkbox at the bottom. Make sure that the Unblock option is checked.Now, click ApplyOK to save sầu changes.If you see a confirmation message, click Continue.

After unblocking your setup file, try to lớn run the application again. If you don’t have an Unblochồng option, it means that this tệp tin is already unblocked, so you’ll need to use a different solution.

Solution 2 – Temporarily disable your antivirus

Your antivirut is one of the most important applications on your PC, protecting you from unsafe & malicious files. It can also prsự kiện certain files from running, however. If that happens, you can encounter the This installation package could not be opened error message.

According to users, you might be able khổng lồ fix this problem simply by disabling your antivirut software. After disabling your antivirus, try running the cài đặt file again & kiểm tra if the error message appears.

Keep in mind that Windows 10 comes with built-in antivi khuẩn with its Windows Defender, so even if you disable your third-buổi tiệc ngọt antivirut your PC will remain safe.

If disabling your antivirus fixes the problem, you might want to lớn kiểm tra its configuration and try khổng lồ find the cause of the problem.

On the other hvà, if this error appears frequently, you might want to lớn try updating your antivirut. In the worst-case scenario, you might need lớn switch to a different antivirut software altogether.

Solution 3 – Check if Windows Installer service is running

In order to lớn install any application, Windows Installer needs khổng lồ run. Sometimes, though, this service can become disabled which can cause the This installation package could not be opened error.

To fix it, you need khổng lồ manually start Windows Installer. This is relatively simple:

Cthua trận Services window and try khổng lồ install the application again.

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The installation process is closely related lớn Windows Installer service, so if you’re having this problem, be sure to kiểm tra if the aforementioned service is running.

Solution 4 – Modify your registry

According to lớn users, you might be able to solve sầu this issue simply by modifying your registry. Modifying the registry can be potentially dangerous and can lead lớn system instability, therefore we advise you to be cautious.

To modify your registry, bởi the following:

Cthua trận Registry Editor.

After making the changes, try khổng lồ start the installation again.

If any new problems occur after changing your registry, you can restore it at any time simply by running the backup file that you created in Step 3.

Solution 5 – Create a new user account

According khổng lồ users, you can fix the This installation package could not be opened error simply by creating a new user trương mục. Sometimes, your regular user account might not have sầu the necessary privileges or it might be corrupted, causing this problem to lớn occur.

To fix the issue, you need to create a new user trương mục and try lớn install the application from that account:

After creating a new user account, log out of your current account & switch to lớn the new one.

Now, locate the setup tệp tin và try to run it. If you manage to install the application, you can go baông xã to your main account and try to lớn run it again.

After doing that, feel không tính tiền lớn delete the newly created account since you won’t need it anymore.

A few users reported that this error occurs because they have a special character in their username.

Certain thiết lập files can’t handle special characters, so they will give you this error message. If that’s the case, you’ll have lớn create a new tài khoản that has only alphanumeric characters in its name và use it to lớn install the problematic application.

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Solution 6 – Enable a hidden administrator account

If creating a new user trương mục doesn’t fix the This installation package could not be opened error, you might need to enable the hidden administrator trương mục. This is rather simple:

After Command Prompt opens, enter net user administrator /active:yes.Cthua thảm Commvà Prompt.