Microsoft System Security Alert Scam

Also Known As: "Microsoft System Security Alert" virus
Type: Adware
Distribution: Moderate
Damage level: Medium

Microsoft System Security Alert removal instructions

What is Microsoft System Security Alert?

"Microsoft System Security Alert" is a fake error message displayed by a deceptive website that users often visit inadvertently - they are redirected by various potentially unwanted programs (PUPs). Note that PUPs usually infiltrate systems without consent (the "bundling" method). In addition, they often deliver intrusive advertisements and track users' Internet browsing activity.

Microsoft System Security Alert adware

The "Microsoft System Security Alert" messages states that the system has been infected and, for this reason, some functionality (for example, the Internet connection) has been blocked. It states that the malware must be removed immediately and victims should contact "Microsoft Customer Support" via a toll-free telephone number ("+1-866-217-8835") provided. They will then supposedly be guided through the malware removal process. As mentioned above, however, this message is fake and should not be trusted. Cyber criminals attempt to scare and trick victims into calling and paying for fake technical support that is not even needed (the malware does not exist). Therefore, never attempt to call the telephone number. The "Microsoft System Security Alert" error can be removed simply by closing the web browser. PUPs also deliver pop-up, coupon, banner, and other ads that often conceal underlying content, significantly diminishing the browsing experience. In addition, these ads might redirect to malicious websites - clicking them risks further adware or malware infections. Another downside is data tracking. PUPs monitor browsing activity by recording IP addresses, URLs visited, search queries, pages viewed, mouse/keyboard activity, and other similar information. This data might contain personal details that developers share with third parties (potentially, cyber criminals) who misuse private details to generate revenue. This type of information tracking can result in serious privacy issues or even identity theft. For these reasons, PUPs should be uninstalled immediately.

Threat Summary:
Name"Microsoft System Security Alert" virus
Threat TypeAdware, Unwanted ads, Pop-up Virus
SymptomsSeeing advertisements not originating from the sites you are browsing. Intrusive pop-up ads. Decreased Internet browsing speed.
Distribution methodsDeceptive pop-up ads, free software installers (bundling), fake flash player installers.
DamageDecreased computer performance, browser tracking - privacy issues, possible additional malware infections.
Removal

To eliminate Microsoft System Security Alert virus our malware researchers recommend scanning your computer with Spyhunter.
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There are many fake error messages that share similarities with "Microsoft System Security Alert" including, for example, Warning - Your Computer Is Infected!, Windows Firewall Blocked The Internet, and Your Windows Is Infected. All claim that the system is damaged in certain ways. Bear in mind, however, that fake errors are designed only to generate revenue for the developers. As with Microsoft System Security Alert, these other pop-ups should never be trusted. By offering various 'useful features', all PUPs attempt to give the impression of legitimacy, however, rather than providing any significant value for regular users, they cause unwanted redirects, display ads, and record various user-system information.

How did adware install on my computer?

Developers proliferate PUPs by employing a deceptive marketing method called "bundling" - they hide bundled programs within the "Custom" or "Advanced" settings of the download/installation processes. Rushing this stage and skipping steps exposes systems to risk of various infections and compromises users' privacy.

How to avoid installation of potentially unwanted applications?

To prevent this situation, be very cautious when downloading and installing software. Carefully analyze each step using the "Custom" or "Advanced" settings. Furthermore, decline offers to download/install additional applications. The key to computer safety is caution.

Text presented within "Microsoft System Security Alert" pop-up:

Microsoft System Security Alert
Oops!! Something went wrong with your Windows
Dear Windows User,
The Website you have recently visited may have downloaded the Malware and Virus on your Windows system.
Microsoft Defender is Suspicious about your Windows System Security. Your TCP Connection was blocked by Your Windows Security System. Your Windows and Chrome has been locked until we may hear from you to immediately fix this issue. Please contact Microsoft Windows Help Desk Customer Support: +1-866-217-8835 (TOLL-FREE)

Another variant of "Microsoft System Security Alert" scam:

microsoft system security alert scam variant 2

Text presented in this scam:

Microsoft System Security Alert
Something went wrong with your Windows

Dear Windows User, the Website you have recently visited may have downloaded the Malware and Virus on your Windows system.
Malicious Spyware/Malware Detected
Error # 0x80072ee7

Please call us immediately at: +1-877-372-6054
Do not ignore this critical alert.
 If you close this page, your computer access will be disabled to prevent further damage to our network.
 Your Windows and Chrome has been locked untill we may hear from you to immediately fix this issue.The following information is being stolen...
> Financial Data
> Facebook Logins
> Credit Card Details
> Email Account Logins
> Photos stored on this computer
 Please call us within the next 5 minutes to prevent your computer from being disabled or from any information or data loss.

 Customer Suppor Toll Free: +1-877-372-6054

Instant automatic removal of Microsoft System Security Alert virus: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of Microsoft System Security Alert virus. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

Quick menu:

Adware removal:

Windows 7 users:

Accessing Programs and Features (uninstall) in Windows 7

Click Start (Windows Logo at the bottom left corner of your desktop), choose Control Panel. Locate Programs and click Uninstall a program.

Windows XP users:

Accessing Add or Remove Programs in Windows XP

Click Start, choose Settings and click Control Panel. Locate and click Add or Remove Programs.

Windows 10 and Windows 8 users:

Accessing Programs and Features (uninstall) in Windows 8

Right-click in the lower left corner of the screen, in the Quick Access Menu select Control Panel. In the opened window choose Programs and Features.

Mac OSX users:

Uninstall app in OSX (Mac)

Click Finder, in the opened screen select Applications. Drag the app from the Applications folder to the Trash (located in your Dock), then right click the Trash icon and select Empty Trash.

Microsoft System Security Alert adware uninstall via Control Panel

In the uninstall programs window, look for any suspicious/recently-installed applications, select these entries and click "Uninstall" or "Remove".

After uninstalling the potentially unwanted program, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.

Remove adware from Internet browsers:

Video showing how to remove potentially unwanted browser add-ons:

Internet Explorer logoRemove malicious add-ons from Internet Explorer:

Removing Microsoft System Security Alert ads from Internet Explorer step 1

Click the "gear" icon Internet Explorer options icon (at the top right corner of Internet Explorer), select "Manage Add-ons". Look for any recently-installed suspicious browser extensions, select these entries and click "Remove".

Removing Microsoft System Security Alert ads from Internet Explorer step 2

Optional method:

If you continue to have problems with removal of the "microsoft system security alert" virus, reset your Internet Explorer settings to default.

Windows XP users: Click Start, click Run, in the opened window type inetcpl.cpl In the opened window click the Advanced tab, then click Reset.

Resetting Internet Explorer settings to default on Windows XP

Windows Vista and Windows 7 users: Click the Windows logo, in the start search box type inetcpl.cpl and click enter. In the opened window click the Advanced tab, then click Reset.

Resetting Internet Explorer settings to default on Windows 7

Windows 8 users: Open Internet Explorer and click the gear icon. Select Internet Options.

Reseting Internet Explorer settings to default in Windows 8 - accessing

In the opened window, select the Advanced tab.

Resetting Internet Explorer settings to default on Windows 8 - Internet options advanced tab

Click the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - click the Reset button in the Internet options advanced tab

Confirm that you wish to reset Internet Explorer settings to default by clicking the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - confirm settings reset to default by clicking the reset button

Google Chrome logoRemove malicious extensions from Google Chrome:

Removing Microsoft System Security Alert  ads from Google Chrome step 1

Click the Chrome menu icon Google Chrome menu icon (at the top right corner of Google Chrome), select "More tools" and click "Extensions". Locate all recently-installed suspicious browser add-ons, select these entries and click the trash can icon.

Removing Microsoft System Security Alert ads from Google Chrome step 2

Optional method:

If you continue to have problems with removal of the "microsoft system security alert" virus, reset your Google Chrome browser settings. Click the Chrome menu icon Google Chrome menu icon (at the top right corner of Google Chrome) and select Settings. Scroll down to the bottom of the screen. Click the Advanced… link.

Google Chrome settings reset step 1

After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.

Google Chrome settings reset step 2

In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.

Google Chrome settings reset step 3

Mozilla Firefox logoRemove malicious plug-ins from Mozilla Firefox:

Removing Microsoft System Security Alert ads from Mozilla Firefox step 1

Click the Firefox menu firefox menu icon (at the top right corner of the main window), select "Add-ons". Click "Extensions", in the opened window, remove all recently-installed suspicious browser plug-ins.

Removing Microsoft System Security Alert ads from Mozilla Firefox step 2

Optional method:

Computer users who have problems with "microsoft system security alert" virus removal can reset their Mozilla Firefox settings.

Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, firefox menu icon in the opened menu, click Help.

Accessing settings (Reset Firefox to default settings step 1)

Select Troubleshooting Information.

Accessing Troubleshooting Information (Reset Firefox to default settings step 2)

In the opened window, click the Refresh Firefox button.

Clicking on Refresh Firefox button (Reset Firefox to default settings step 3)

In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.

Confirm your want to reset Firefox settings to default (Reset Firefox to default settings step 4)

safari browser logoRemove malicious extensions from Safari:

removing adware from safari step 1 - accessing preferences

Make sure your Safari browser is active, click Safari menu, and select Preferences....

removing adware from safari step 2 - removing extensions

In the opened window click Extensions, locate any recently installed suspicious extension, select it and click Uninstall.

Optional method:

Make sure your Safari browser is active and click on Safari menu. From the drop down menu select Clear History and Website Data...

resetting safari step 1

In the opened window select all history and click the Clear History button.

resetting safari step 2

Microsoft Edge logoRemove malicious add-ons from Microsoft Edge:

Removing browser hijackers from Microsoft Edge step 1

Click the three horizontal dots icon edge more icon (at the top right corner of Microsoft Edge), select "Extensions". Look for any recently-installed suspicious extensions, right click your mouse on these entries and click "Uninstall".

Removing browser hijackers from Microsoft Edge step 2

Optional method:

Click the three horizontal dots icon edge more icon (at the top right corner of Microsoft Edge), and select Settings.

Resetting Microsoft Edge settings step 1

In the opened tab, click the "Choose what to clear" button.

Resetting Microsoft Edge settings step 2

Click Show more and select everything, and then click the "Clear" button.

Resetting Microsoft Edge settings step 3

  • If this didn't help, please follow these alternative instructions explaining how to reset Microsoft Edge browser.

Summary:

declining installation of adware while downloading free software sampleCommonly, adware or potentially unwanted applications infiltrate Internet browsers through free software downloads. Note that the safest source for downloading free software is via developers' websites only. To avoid installation of adware, be very attentive when downloading and installing free software. When installing previously-downloaded free programs, choose the custom or advanced installation options – this step will reveal any potentially unwanted applications listed for installation together with your chosen free program.

Removal assistance:
If you are experiencing problems while trying to remove "microsoft system security alert" virus from your computer, please ask for assistance in our malware support forum.

Post a comment:
If you have additional information on "microsoft system security alert" virus or it's removal please share your knowledge in the comments section below.

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Removal Instructions in other languages
Software uninstall instructions
Malware activity

Global virus and spyware activity level today:

Medium threat activity
Medium

Increased attack rate of infections detected within the last 24 hours.

QR Code
Microsoft System Security Alert virus QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of "Microsoft System Security Alert" virus on your mobile device.
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Platform: Windows

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