How to fix
Error # 3658878cba98999 Pop-Ups
on Windows

Strange things are happening on my computer… At first, I thought that I’m infected with a malicious virus, but AVAST showed nothing related to a virus. The problem is that my web browser continuously throws a warning alert from Microsoft support (Error # 3658878cba98999). The message notifies that my personal data stored on the system is at the risk, which is, of course, an intimidating piece of info. If the message is genuine, what should I do? Call to support or install another antivirus? Which one would be the best in this case? Thanks for all the answers!

Error # 3658878cba98999 is a FAKE pop-up alert, which is triggered by a malicious code injected into your web browser. This code is dropped into a browser by an ad-supported application, which, most probably, has been installed on the system via software bundle. Therefore, if you have started receiving Error # 3658878cba98999 out of nowhere, try to recall what the last program that you’ve installed on the system was and remove it because, apparently, it carried attachments (add-ons, plug-ins, toolbars, etc.). Unfortunately, but Error # 3658878cba98999 adware removal is not sufficient to prevent potentially dangerous pop-ups from reoccurring. Adware type programs can install supporting files in diverse system folders and sub-folders, as well as corrupt web browser’s settings. Therefore, we would highly recommend running a scan with a professional anti-malware, for example, [d1] and then reset your web browsers one by one.

Before we get started with Error # 3658878cba98999 removal, first let us specify on what circumstances the pop-up shows up and how it works. As we have already pointed out, the warning notification starts occurring soon after the installation of a freeware or shareware. Note that various freebies are often misused by hackers for spreading potentially unwanted programs (PUPs), which work as profit makers. Once the Error # 3658878cba98999 adware roots into the system, it is injected into the list of startup programs. Besides, a malicious code infects a web browser, usually, Google Chrome, generates a fake pop-up, and freezes up the screen.

Error # 3658878cba98999 is a Tech-Support-Scam, which contains false information from the very first word. To make it look trustworthy, scammers disguise under Microsoft Support and prompt people to call for Microsoft certified technicians. To induce people’s anxiety, scam experts report about a possible identity theft, meaning that personal information, such as banking credentials, passwords, Facebook logins, and other sensitive information may be stolen. DO NOT believe a single word because it’s a trick used to make YOU call for A high-priority number and spend a lot of money for a call that will give nothing, except money loss. On top of that, impostors on the other side of the handset may ask you to download a program to establish a remote connection with your PC, what may have devastating consequences for your PC’s and your privacy’s safety. Thus, do not delay Error # 3658878cba98999 scam removal. To perform it, you won’t need the help of the experts. Follow the instructions given below and you will get rid of this PUP easily.

How to fix Error # 3658878cba98999 pop-up virus?

Step 1. Terminate Error # 3658878cba98999 PUP

To remove the pop-up from your web browser, you have to delete the adware from the system in the first place. You can do that automatically by running a scan with [d1] or another trusted anti-malware.In addition, the adware may be eliminated manually by performing these steps:

1. Open the list of programs that have been recently installed. For this purpose, navigate to:
   Start > Control Panel > Programs and Features > Add/Remove Programs (Windows 7, XP).
   Right-click on Win key > select Control Panel > Uninstall a Program (Windows 8, 10).
2. Carefully check what programs have been recently installed. The best way to do that is to sort the programs by date. Select unknown programs and click Uninstall. To confirm the removal, click OK/Uninstall.

Step 2. Reset Google Chrome

1. Open Google Chrome and then look for a Menu button (three bars located in the top right corner). Click it, select Tools on a drop-down menu and click Extensions.
2. Locate suspicious browser extensions and click on the trash icon placed next to them. Confirm the removal by clicking Remove.
3. Click Menu button again and select Settings.
4. Scroll down and find Show advanced settings option.
5. Open Advanced settings and find Reset settings button. Read all information provided in the notification and, if you agree with all conditions, click Reset.

In case you receive Error # 3658878cba98999 alerts in another web browser, you can find how to reset them here:

Internet Explorer
Microsoft Edge
Mozilla Firefox