Hey there! I have a computer issue, could you help? I got a pup up saying that Registry Failure of Operating System. Error Code: rundll32.exe. This pop up tells me that my computer has been blocked and tells me to contact Microsoft immediately. It gives me a number +1-844-988-6363. Should I follow it and call this number? I don’t know what happened. I just got this pup up suddenly. I can’t even close this pop up. Is this a scam? Please help me. What should I do to get rid of it?

What is “Registry Failure of Operating System. Error Code: rundll32.exe”?

When you got this “Registry Failure of Operating System. Error Code: rundll32.exe” pop up, you should know that your computer has been infected with one kind of adware which is harmful to your computer and should be removed completely from the infected computer. It is a fake tech support that tells the infected computer users to call a number for help. In some case, people are too scared to distinguish right from wrong then they may call the number. When they call the number, they will be told to pay a big fine to fix their problems. Then after the payment, the scammer will connect to the infected computer, they may install other malware to the infected computer then the infected computer will be furtherly messed up. So please note that if you got this “Registry Failure of Operating System. Error Code: rundll32.exe” pop up, don’t call the number and don’t pay to the scammer! What you should do is to remove this harmful pop up from your computer.

Screenshot of this adware


What does this adware say?


Windows System Alert!!

System has been infected due to unexpected error!
Please Contact Microsoft +1-844-988-6363 Immediately!
to unblock your computer.

Registry Failure of Operating System.
Error Code: rundll32.exe


. Microsoft system services may be not working.
. Hard drive is about to crash
. Possible Registry Failure
. DLL files got corrupted
. Foreign address detected


Seeing these pop-up’s means that you may have a virus installed on your computer which puts the security of your personal data at a serious risk.
It’s strongly advised that you call the number above and get your computer inspected before you continue using your internet.

Call immediately for assistance.
Contact Microsoft At ( +1-844-988-6363 )

This “Registry Failure of Operating System. Error Code: rundll32.exe” pop up is one kind of malicious adware that can mess up your computer, it may block your browser and don’t allow you to visit other websites. It may slow down your computer and make your computer act weirdly. If you don’t completely remove this adware from your computer immediately, your computer will get worse and it will be more difficult to get rid of this adware. In addition, once the computer gets infected by this adware, this adware has the ability to make a record of your browse history and steal your sensitive data. Thus your sensitive information could be disclosed on the third party. It is necessary for you to remove this adware from your computer immediately.

How does this adware infect my computer

You may get this adware in the following situations:

You received an unknown email telling you some weird messages and there is an attachment in this email. Due to the curiosity, you will click and download the attachment. But you never know that you have downloaded the adware at the same time.
When you surf on the Internet, you clicked on the pop-up ads accidently. After you clicked on the ads, you can get adware. The ads may contain the adware. Once you click on it, the adware will be downloaded to your computer silently.
You downloaded a freeware on the Internet, but you don’t know that the adware has been bundled with the freeware you downloaded. When you downloaded and installed the freeware to your computer, you will download the adware at the same time and you know nothing about it.

The characteristics of Adware

– Install some strange add-ons and extensions to your browser.
– Slow down your browsed speed or even make your browser crash down
– Many annoying pop-ups are injected with the website you are visiting
– Other unwanted programs may be installed without your permission
– May record your browse habits and get your confidential information like banking detail, home address and phone number

If you find any symptoms listed above showing on your computer, then your computer must be suffered with an adware that causes you keep being redirecting to this “Registry Failure of Operating System. Error Code: rundll32.exe” pop up. Welcome to contact YooSecurity Online PC Experts for manual removal guide. Also, we will provide a short removal guide below for computer literate.

NOTE: Being afraid to do any wrong operation during the process of removing this adware? Please contact YooSecurity Online PC Experts, we are here to help you:

The way to remove Adware (For Computer Literate)

There is a removal guide of Adware provided here; however, expertise is required during the process of removal, please make sure you are capable to do it by yourself.

1st: Press “Ctrl + Alt + Delete” keys together to open Windows Task Manager, then end all this pop up running processes. One of processes called random.


2nd: Please find Folder Option in Control Panel, tap View, then select Show hidden files and folders, non-tick Hide protected operating system files (Recommended). Then click OK.


3rd: Go back to desktop then click on Start, then click on Control Panel
Then click on Add and Remove Programs, and find the program related to the “Registry Failure of Operating System. Error Code: rundll32.exe” adware then try to remove it.


4th: Change your homepage in your browser (Take Mozilla Firefox as an Example)

Click on the button which has tree lines, then click on Options

Firefox menu

Then type the URL you want into Home page box and then close this Options tab.

Firefox options

Similar video on adware removal:


You should be aware that this “Registry Failure of Operating System. Error Code: rundll32.exe” pop up is a harmful adware that could mess up your computer. It could record your browse habit and get your sensitive information. It could slow down your computer and make your computer perform strangely. Usually this pop up pretends that they are members of Microsoft and tells the victims that their computers have been blocked and they should call a number immediately to unblock their computers. Please note that don’t call the number or you may need to pay a big fine. Please remove this harmful adware as soon as possible to avoid any unnecessary damages.

Suggestion: To follow removal guide that mentioned above, a level of computer knowledge is needed. Still can’t get out of “Registry Failure of Operating System. Error Code: rundll32.exe” pop up? Contact online experts for help now!

Published by Tony Shepherd & last updated on October 10, 2016 1:11 pm

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