How to Launch The Application Blocked by Java Security

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Application Blocked By Java Security

Java & The Application Blocked by Java Security

Java strives to keep improving security to ensure the protection of the system where it is mounted.

Nowadays, most users do not opt for Java, but still, it is essential for some applications to launch Java. While you run such an application or program, you observe a warning from Java Security.

As you know, this kind of security warning is not typical. Hence, most users face confusion over what to do next while noticing an application blocked by Java Security. Here, we have come to your rescue!

For people who have no idea what Java is, here we go. Java is a computing platform and programming language. This program came into being in 1995 through Sun Microsystems.

There are various websites and applications that do not work unless you install Java on your system. Java is reliable, fast, and secure. Java is all over the place, from the internet to cell phones, supercomputers to game consoles, and data centers to laptops.

The best part is that this program is free to download. So, what else do you need!

Here, you will learn about how you should run an application blocked by Java Security on Windows PC. Java shares a bad reputation over the past few decades. Most browsers block Java by default now.

So, this program is slowly phasing out on the internet. Despite all odds, this programming language is as ubiquitous as it used to be if nothing more than that. Java is still employed in development and is found everywhere to this day.

The main vulnerability of Java is that the program does not upgrade itself automatically like various other programs. When it comes to this, the user needs to do everything. Hence, it potentially leaves a susceptible program unpacked for weeks and months at times.

However, the program alerts you every time an updated version comes into play while leaving the same to you. In the end, it is totally up to you to manage and update it. Due to its precautions, you may face warnings like “application blocked by Java Security.

application blocked by Java Security

PS: Also, click to find out what to do if Javaw.exe is missing with ease.

Java Security

Oracle has executed a security post within the Java program to ensure security since Java 7. Java Security offers alerts every time you utilize a program or application that is self-signed, unsigned, or not signed by a certified authority.

It even gives warnings against applications that neglect permission attributes. Undoubtedly, it is for security reasons. However, it occasionally shows false positives.

Usually, all of these issues are not real if you regularly update programs or employ mainstream programs. It can be otherwise if you make use of custom programs and play or develop specific Indie games that use Java. You will most likely come across Java Security warnings like “application blocked by Java Security.”

Java Security

How to launch an application blocked by Java Security?

In case you are facing an error “application blocked by Java Security,” there are a few things that you can do to get rid of it. It does not take much on your part to resolve this issue.

You just need to update everything so as to add the website to the exception category. Here, it depends on what you perform to trigger this kind of alert.

So, let’s know about a few things to resolve the error “application blocked by Java Security.”

1. Update Everything

In case, you suddenly begin to come across Java Security warnings without any reason, update the program. You can do the same if you face these alerts for something you generally perform without any warning. In order to update the version, visit the website of Java, and install the right version for the system.

Once installed in the program, check if the problem still persists for whatever you were carrying out. If this does not work for you, try to update the browser, application, program, or anything else that was triggering that alert.

The latest version of Java comprises important enhancements so as to improve the security, stability, and performance of the Java applications, which run on your system. So, installing the Java update will make sure that Java applications keep on running efficiently and safely.

The sole reason behind Java Security warnings is programs or Java updates. Out of these two, one must be outdated, incompatible, or not working out correctly. A fast and quick update can resolve most of these Security warnings.

2. Examine Settings for Java Security

Sometimes, updating or installing Java triggers a raise in the security level. Hence, it becomes the second important thing to check after checking Java updates. In order to examine this, follow the instructions as follows:

Steps to fix “application blocked by Java Security”:

To get rid of this irritating alert, you need to go through the following steps:

Step 1: Choose “Java”

In the first place, you need to launch the “Control Panel.” After that, choose the option “Java” and then the little icons on the top.

RUN Control Panel
Java Settings on PC
Step 2: Click on the tab “Security”

Now, you have to click on the tab “Security” from the Control Panel of Java.

Step 3: Examine the level of security

Under the tab “Security,” you need to examine the level of security. Here, Oracle recommends using the level “Very High” as the most appropriate one. Keep the bar to “High” and check if you are still coming across the same alert.

Examine the level of Java security

In case, you use a website that utilizes Java to date and that triggers the warning, manage that website. For this, you need to add that website to the Security tab’s whitelist. To do so, go through the following actions.

Steps to fix “application blocked by Java Security”:

It is really annoying to face errors like “application blocked by Java Security.” To get rid of the error, you can try out the following steps.

Step 1: Choose the tab “Security”

Initially, you need to launch “Control Panel” and then the tab “Security.” Under this tab, you need to choose the tab “Edit Site List,” which you will find on the page bottom.

Edit Site List on Java Security Settings
Step 2: Choose the button “Add”

Under that tab, you need to put in the URL of that website. Once done, select the button “Add” to add that website to the list.

Add Sites to List
Step 3: Insert other URLs

If you are facing the same problem with other sites, you can insert links to those websites too. The program will allow those websites to work smoothly.

Step 4: Tap O.K.

Once done, you can tap O.K. and check whether the same problem exists or not. Here, you need to make sure that you make use of the full URL. For instance, add websites with https:// or http:// to make them work properly.

add websites with https:// or http://

You have to go through this method only if the website is causing the error “application blocked by Java Security.” This method is not going to do anything for programs or applications that throw this annoying warning.

3. Verify the Certificate

Eventually, if the above-mentioned ways do not work for you, it is time to verify the certificate. Here, you need to take a look at the certificate of programs or applications that you are working on. In case the program is not trusted or signed by Java, it is going to show the error “application blocked by Java Security.”

If that’s the case, you need to ask the seller for a verified certificate. On the other hand, you can even ask for the problem of why that program is showing up with Java security warnings. Once you own a verified certificate, install the same, and the problem will vanish automatically.


Q1: Can I bypass Java security completely to run any application?
A1: It is not recommended to bypass Java security completely, as it may expose your system to potential risks. It is important to balance security and usability when dealing with blocked applications.

Q2: Why does Java block certain applications?
A2: Java blocks applications to protect users from potential security threats. This ensures that only trusted and verified applications are executed on the system.

Q3: How can I check the security level in the Java Control Panel?
A3: Open the Java Control Panel, go to the “Security” tab, and check the slider or dropdown menu that indicates the security level. Ensure that it is not set to the highest level.

Q4: What should I do if the application is not from a trusted source?
A4: If the application is not from a trusted source, it is generally advisable not to run it. Running applications from untrusted sources can put your system at risk of malware or other security threats.

Q5: Why should I clear the Java cache?
A5: Clearing the Java cache can help resolve conflicts or corruption that may be causing the application to be blocked. It is a troubleshooting step that can potentially solve the issue.


So, now you have an idea about what to do when you are struggling with Java security warnings like “application blocked by Java Security.” It becomes really difficult to work on that program, application, or game if you continue to face this error. It is not that difficult to get rid of it.

Make use of the methods mentioned in this article to enjoy a smooth experience once again. On the other hand, you better not forget to update the Java version whenever you come across one.


Ten years of experience in information and computer technology. Passionate about electronic devices, smartphones, computers, and modern technology.

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