Do not trust the "WIN.DLL011150 Error" scam

Also Known As: WIN.DLL011150 Error tech support scam
Distribution: Low
Damage level: Medium

"WIN.DLL011150 Error" scam removal instructions

What is the "WIN.DLL011150 Error" scam?

"WIN.DLL011150 Error" is a technical support scam promoted by various deceptive websites. This scheme has been observed being run on azurewebsites.net, though not exclusively. The "WIN.DLL011150 Error" scheme claims that the computer has been blocked due to the Windows registration key supposedly being illegal and the device having been compromised. This scam attempts to trick people into exposing their registration keys and calling a fake 'tech support' number. No site can detect threats/issues present on devices - any that make such claims are scams. Users rarely access these deceptive web pages intentionally - most are redirected to them by intrusive advertisements or Potentially Unwanted Applications (PUAs) already infiltrated into the system.

WIN.DLL011150 Error scam

The pop-up window presented on sites running the "WIN.DLL011150 Error" scam states that it is a "VIRUS ALERT TO Microsoft" with the error code specified as "WIN.DLL01150". Users are warned not to close this web page and/or restart their computers. Their devices have been allegedly blocked for security reasons, as their Windows registration key have been found to be "illegal". Additionally, a window is supposedly hacked and/or controlled from an unspecified location, and it is proliferating viruses over the internet. To regain access to their computers, users are urged to call the provided free technical support number and this instruction is repeated several times throughout the deceptive page. Furthermore, the "unusual activity" on the device can apparently pose a threat to stored data and financial activity. The scheme also instructs users to enter their Microsoft registration key to unblock their computers. Note that all of the information provided by "WIN.DLL011150 Error" is false. Technical support scams are typically used to fool users into calling fake and expensive telephone numbers. From there on, victims can be held on the line with nonsensical technobabble, while their telephone bill is racking up. Alternatively, the scammers can attempt to extort personal information (e.g. names, addresses, emails, banking account or credit card details, etc.) from users or gain access and control over their devices. Another way that scammers can abuse users' trust is by requesting payment for "services rendered". In summary, trusting the "WIN.DLL011150 Error" scam can lead to system infections, financial loss, serious privacy issues and even identity theft. In some cases, closing the deceptive web page can be impossible. In such instances, Task Manager must be used to end the browser process. When the browser is reopened, the previous process must not be restored, as the scam page will then be reopened.

As mentioned, one of the main causes of rogue redirects to untrusted/malicious websites are PUAs, however, these unwanted applications can have other capabilities. They can run ad campaigns (i.e., deliver unwanted and harmful advertisements). When clicked, these intrusive ads redirect to dubious/dangerous sites and can stealthily download/install rogue software (e.g. PUAs). Another type of PUA can modify browsers, restrict/deny access to settings, and promote fake search engines. Most PUAs have data tracking capabilities. They can record browsing activity (URLs visited, pages viewed, search queries typed, etc.) and gather personal information derived from it (IP addresses, geolocations and other details). The collected data is often monetized by sharing with third parties (potentially, cyber criminals) seeking to misuse it for profit. These unwanted apps pose a significant threat to device and user safety. Therefore, you are strongly advised to eliminate all suspect applications and browser extensions/plug-in immediately upon detection.

Threat Summary:
Name WIN.DLL011150 Error tech support scam
Threat Type Phishing, Scam, Social Engineering, Fraud.
Fake Claim Scam claims users' devices have been compromised and blocked.
Tech Support Scammer Phone Number +1-855-570-6839
Related Domains azurewebsites.net, chasxlogs34.xyz
Symptoms Fake error messages, fake system warnings, pop-up errors, hoax computer scan.
Distribution methods Compromised websites, rogue online pop-up ads, potentially unwanted applications.
Damage Loss of sensitive private information, monetary loss, identity theft, possible malware infections.
Malware Removal (Windows)

To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Malwarebytes.
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To use full-featured product, you have to purchase a license for Malwarebytes. 14 days free trial available.

"System Warning Alert", "Activation Security Warning", "Attention 22 threats found" and "ZoneAlarm Global Virus Alert" are some examples of other tech support scams. The Web is rife with various deceptive/scam websites. Technical support schemes are just one type. Other popular scam models include (but are not limited to) fake prize giveaways, alerts that a piece of essential software is allegedly outdated, "unbelievable" offers/deals, and so on. Scams operate differently (they can make different requests, claims and demands), however, their purpose is identical: to generate revenue for the scammers/cyber criminals behind them.

How did potentially unwanted applications install on my computer?

PUAs are distributed via the download/installation set-ups of other software. This deceptive marketing tactic of pre-packing regular products with unwanted or malicious additions is called "bundling". Rushing downloads/installations (e.g. ignoring terms, skipping steps, using pre-set options, etc.) increases the risk of inadvertent installation of bundled content. Some PUAs have "official" download web pages. Intrusive ads proliferate these applications as well. Once clicked, they can execute scripts to download/install PUAs without users' consent.

How to avoid installation of potentially unwanted applications

You are advised to research all products before download/installation or purchase. Use only official and verified download channels. Untrusted sources such as unofficial and free file-hosting sites, Peer-to-Peer sharing networks and third party downloaders commonly offer deceptive and/or bundled content. When downloading/installing, it is important to read the terms, explore all available options, use the "Custom" or "Advanced" settings and opt-out of additional apps, tools, features, etc. Intrusive advertisements may seem legitimate and harmless, however, they can redirect to dubious websites (e.g. gambling, pornography, adult-dating and others). If you encounter ads/redirects of this kind, check the system and immediately remove all suspicious applications and browser extensions/plug-ins. If your computer is already infected with PUAs, we recommend running a scan with Malwarebytes for Windows to automatically eliminate them.

Text presented in "WIN.DLL011150 Error" scam:

VIRUS ALERT FROM Microsoft
Windows Error Code : WIN.DLL01150

 

This computer is BLOCKED

 

Do not close this window and restart your computer
Your computer's registration key is Blocked.
Why we blocked your computer?
The window's registration key is illegal.
This window is sending virus over the internet.
This window is hacked or used from undefined location.
We block this computer your security.
Contact Microsoft helpline to reactivate your computer.

 

Microsoft Security Tollfree +1-855-570-6839

 

Back to Safety


Microsoft Security Tollfree:
+1-855-570-6839


Prevent this page from creating additional dialogues.

 

Enter Microsoft registration key to unblock.
ENTER KEY: Submit

 

Windows
Microsoft Support Alert
Your System Detected Some Unusual Activity.
It might harm your computer data and track your financial activities.

 

Please report this activity to +1-855-570-6839

 

Ignore Alert
Leave This Page

The appearance of "WIN.DLL011150 Error" scam (GIF):

Appearance of WIN.DLL011150 Error scam

Another variant of "WIN.DLL011150 Error" pop-up scam:

WIN.DLL011150 Error pop-up scam

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Malwarebytes is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
▼ DOWNLOAD Malwarebytes By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for Malwarebytes. 14 days free trial available.

Quick menu:

Removal of potentially unwanted applications:

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.

PUAs 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 application, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.

Remove rogue extensions from Internet browsers:

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

Internet Explorer logoRemove malicious add-ons from Internet Explorer:

Removing rogue extensions 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 rogue extensions from Internet Explorer step 2

Optional method:

If you continue to have problems with removal of the win.dll011150 error tech support scam, 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 rogue extensions 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 and remove them.

Removing rogue extensions from Google Chrome step 2

Optional method:

If you continue to have problems with removal of the win.dll011150 error tech support scam, 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 rogue extensions 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 on "Extensions", in the opened window remove all recently-installed suspicious browser plug-ins.

Removing rogue extensions from Mozilla Firefox step 2

Optional method:

Computer users who have problems with win.dll011150 error tech support scam 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 (Chromium) logoRemove malicious extensions from Microsoft Edge:

Removing adware from Microsoft Edge step 1

Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the upper-right corner of Microsoft Edge), select "Extensions". Locate all recently-installed suspicious browser add-ons and click "Remove" below their names.

Removing adware from Microsoft Edge step 2

Optional method:

If you continue to have problems with removal of the win.dll011150 error tech support scam, reset your Microsoft Edge browser settings. Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the top right corner of Microsoft Edge) and select Settings.

Microsoft Edge (Chromium) reset step 1

In the opened settings menu select Reset settings.

Microsoft Edge (Chromium) reset step 2

Select Restore settings to their default values. In the opened window, confirm that you wish to reset Microsoft Edge settings to default by clicking the Reset button.

Microsoft Edge (Chromium) reset step 3

  • If this did not help, follow these alternative instructions explaining how to reset the 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 win.dll011150 error tech support scam from your computer, please ask for assistance in our malware support forum.

Post a comment:
If you have additional information on win.dll011150 error tech support scam 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
Malware activity

Global malware activity level today:

Medium threat activity

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

QR Code
WIN.DLL011150 Error tech support scam 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 WIN.DLL011150 Error tech support scam on your mobile device.
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