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Do not trust scam websites displaying "Windows Error Code: DLL011150"

Also Known As: Windows Error Code: DLL011150 tech support scam
Damage level: Medium

What is the "Windows Error Code: DLL011150" scam?

"Windows Error Code: DLL011150" refers to a technical support scam run on various deceptive websites. This scheme claims that it is a "virus alert" from Microsoft, informing users that their devices have been supposedly blocked due to suspicious activity detected on them.

All of the information provided by "Windows Error Code: DLL011150" is false and this scam is in no associated with the Microsoft Corporation. Users rarely access sites that promote these scams intentionally, most enter them through mistyped URLs, are redirected to them by intrusive advertisements, or by Potentially Unwanted Applications (PUAs).

These apps do no need express user permission to be installed onto systems. PUAs cause redirects, run intrusive advertisement campaigns, hijack browsers and collect browsing-related information.

Windows Error Code: DLL011150 scam

Once a site running "Windows Error Code: DLL011150" is accessed, visitors are presented with a pop-up window with the text presented within it heard on audio. The scheme states that it is a "virus alert from Microsoft" and that the user's computer has been blocked.

According to the pop-up, the device was allegedly locked due to suspicious activity detected on the user's IP (Internet Protocol) address, which in turn was caused by a (nonexistent) system infection. The scam then lists fake issues already present on the device and urges visitors to contact tech support experts via the provided telephone number.

Despite the fraudulent helplines being presented as toll-free, they are frequently very expensive. Typically, scammers attempt to gain access to the computers of potential victims, claim to fix the nonexistent problems and demand exorbitant fees for their "services".

In the best case scenarios, victims devices remain unharmed, however, more commonly, scammers remove any legitimate anti-virus programs and install and/or trick users into purchasing fake ones, infect the devices with malware and extract personal/financial information.

The malicious software they install can be Trojans, ransomware, cryptominers and various other malicious programs. Scammers often infect their victims' machines with Remote Access Trojans (RATs) to gain indefinite access and control over the computers without the owners' knowledge.

Additionally, scammers ask users to provide vulnerable information such as names, surnames, addresses, emails, banking account and/or credit card details. Rather than outright asking for this data, scammers may ask users to enter it into phishing websites, which are disguised and/or function as payment gateways.

The preferred payment methods for the "services rendered" typically deal with digital currencies (e.g. pre-paid vouchers, gift-cards, cryptocurrencies, etc.), which are difficult/impossible to trace. Furthermore, scammers usually target victims repeatedly, if their initial scam attempts are unsuccessful.

To summarize, trusting the "Windows Error Code: DLL011150" scheme can result in system infections, financial loss, serious privacy issues and identity theft.

As mentioned, one of the main causes of rogue redirects to deceptive/scam pages are PUAs. These applications have various capabilities in varied combinations, as well as force-opening harmful websites. Adware-types deliver intrusive ads, which significantly diminish the browsing experience.

When clicked, the delivered ads redirect to dubious/dangerous sites and some can even stealthily download/install rogue software. Browser hijacker type PUAs modify browser settings and restrict access to them to promote fake search engines.

The promoted web search tools are seldom able to generate unique results, and so they redirect to Google, Yahoo, Bing and other legitimate search engines. Most PUAs (regardless of type) have data tracking capabilities.

They can record browsing activity (browsing and search engine histories) and collect personal information extracted from it (IP addresses, geolocations and other details). The gathered data is then shared with and/or sold to third parties (potentially, cyber criminals).

Therefore, to ensure device integrity and user safety, all suspicious applications and browser extensions/plug-ins must be removed without delay.

Threat Summary:
Name Windows Error Code: DLL011150 tech support scam
Threat Type Phishing, Scam, Social Engineering, Fraud.
Fake Claim Scam claims users' computers have been blocked due to suspicious activity detected on them.
Disguise Scam is disguised as a virus alert from Microsoft.
Tech Support Scammer Phone Number +1 (877) 938 0878, +1-833-220-3898
Related Domains jlcomputersupport[.]co
Detection Names (jlcomputersupport[.]co) Netcraft (Malicious), Full List Of Detections (VirusTotal).
Serving IP Address (jlcomputersupport[.]co)
166.62.28.148
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)

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"Your Computer Is In Blocked State", "Error MS-77X1", "Covid19 Warning Alert", and "Windows Alert & Warning" are some examples of other tech support scams. The internet is rife with these schemes.

Popular scam models include (but are not limited to) warnings that the system is infected or at risk, alerts that a crucial piece of software is outdated or missing, prize giveaways and raffles, amazing offers and deals, etc. Regardless of what these scams claim, offer, request or demand, the purpose is identical: to generate revenue for the scammers/cyber criminals behind them.

How did potentially unwanted applications install on my computer?

PUAs are proliferated via the download/installation set-ups of other products. This deceptive marketing technique of pre-packing regular software with unwanted or malicious additions is called "bundling". Rushing downloads/installations (e.g. ignoring terms, using "Quick/Express" settings, etc.) increases the risk of unintentionally allowing bundled content into the system.

Certain PUAs have "official" download web pages. Once clicked, intrusive ads 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 and/or purchase. Use only official and verified download channels, since untrusted sources including unofficial and free file-hosting websites, Peer-to-Peer sharing networks and other third party downloaders can offer deceptive and/or bundled content.

When downloading/installing, read the terms, explore all possible options, use the "Custom" or "Advanced" settings and opt-out of additional apps, tools, features, etc. It is also important to exercise caution when browsing. Intrusive advertisements may seem legitimate, however, they can redirect to highly dubious sites (e.g. gambling, pornography, adult-dating, and so on).

If you encounter ads and/or redirects of this kind, inspect the system and remove all suspect applications and browser extensions/plug-ins immediately. If your computer is already infected with PUAs, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate them.

Text presented in "Windows Error Code: DLL011150" scam pop-up:

Under Maintainence


VIRUS ALERT FROM Microsoft
Windows Error Code: DLL011150
This computer is BLOCKED
The server khadir.xyz is asking for your username and password.
That server also reports: “Suspicious movement distinguished on your IP address because of destructive infection introduced in your PC. Call Toll Free now @ +1 (877) 938 0878 for any help. Your information is at a genuine risk. There is a computer framework record missing because of some harmful infection Debug malware blunder framework disappointment. It would be ideal if you contact experts to rectify the issue. Please do not open web program. Contact Computer experts at Toll Free Helpline at +1 (877) 938 0878


CONTACT US
TOLL FREE Helpline: +1 (877) 938 0878.

Another variant of "Windows Error Code: DLL011150" pop-up scam:

Windows Error Code: DLL011150 POP-UP Scam (2020-12-17)

Text presented within:

Pop-up window:

 

VIRUS ALERT FROM Microsoft
Windows Error Code : WIN.DLL011150

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 sending virus the internet.
This window is hacked or used from undefined location.
We block this computer for your security.
Contact Microsoft helpline to reactivate your computer.
Microsoft Security Tollfree
+1-833-220-3898

 

 

Background page:

 

Microsoft Security Tollfree:
+1-833-220-3898
Enter Microsoft registration key to unblock.
ENTER KEY: [Submit]

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 +1-833-220-3898
[Ignore Alert] [Leave This Page]

Another example of "Windows Error Code: DLL011150" pop-up scam (this variant also runs a number of scripts and downloads various files just to load the browser and eventually crash it):

Windows Error Code: DLL011150 pop-up scam (2021-01-13)

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
▼ DOWNLOAD Combo Cleaner 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 Combo Cleaner. 7 days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

Quick menu:

Removal of potentially unwanted applications:

Windows 11 users:

Accessing Apps and Features in Windows 11

Right-click on the Start icon, select Apps and Features. In the opened window search for the application you want to uninstall, after locating it, click on the three vertical dots and select Uninstall.

Windows 10 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.

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.

macOS (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 windows error code: dll011150 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 windows error code: dll011150 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 windows error code: dll011150 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 windows error code: dll011150 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 windows error code: dll011150 tech support scam from your computer, please ask for assistance in our malware support forum.

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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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Malware activity

Global malware activity level today:

Medium threat activity

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

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