Prevent getting scammed by websites detecting ERROR 0xC004FC03

Also Known As: ERROR 0xC004FC03 virus
Distribution: Low
Damage level: Medium

"ERROR 0xC004FC03" removal instructions

What is "ERROR 0xC004FC03"?

ERROR 0xC004FC03 is the name of an error, supposedly caused by a virus. This error is detected by deceptive/scam websites. It is used to scare users into calling a fraudulent Microsoft technical support line and consequently trick them into paying for fake services. There is a genuine "ERROR 0xC004FC03" error code, which is displayed when the Window OS (Operating System) fails activation; however, the warnings of it found on webpages are not related to the actual error. It must be emphasized that no site is capable of detecting issues/threats on devices; any that claim to do so cannot be trusted. Usually, such rogue websites are opened by PUAs (Potentially Unwanted Applications), already present on the device. Users should note that these applications do not need explicit permission to infiltrate systems. PUAs are designed to generate redirects to untrustworthy and malicious webpages, run intrusive advertisement campaigns and spy on users' browsing activity.

ERROR 0xC004FC03 scam

When the deceptive page is entered, it displays a pop-up window. The message in it requests visitors to provide their name and password. It also claims to have detected suspicious activity on the device, due to a virus present in the system. For further assistance, a fake Microsoft tech support number is provided. Furthermore, users are informed that their data is endangered. The reason behind the ERROR 0xC004FC03 is allegedly a virus, which is responsible for a missing system file, causing Window OS (Operating System) to fail. The pop-up continues pushing visitors into calling the "free" technical support. Users are warned not to shutdown or restart their computers, as they risk system failure and permanent data loss. The message ends with a final prompt to call the false support line, while reinforcing that the number (+1-833-292-1252) is toll free. These scams are created purely for the purpose of generating revenue for their designers, i.e. they are designed to extort money. For example, any numbers listed in such - can have high fees. Users may also be tricked into paying for some imaginary services rendered and/or pushed into purchasing illegitimate/nonfunctional or malicious software. Sometimes, rogue webpages cannot be closed in the usual way (by closing the browser tab/window), then the browser process should be terminated using the Task Manager. Before the browser is reopened, it is important not to restore the previous session, as failing to do so will reopen the scam page (or cause the site that redirected to it prior to repeat the redirect).

In general, PUAs are quite similar, some are even identical. They appear legitimate and offer various "useful" features/functions to entice users into installation. However, these features rarely work as advertised and in most cases are downright nonfunctional. These applications have many undesirable and harmful abilities. They generate redirects to sale-based, untrustworthy, compromised, deceptive/scam and even malicious websites. Some types run intrusive advertisement campaigns (pop-ups, banners, surveys, coupons, etc.), by employing a variety of tools to enable third party graphical content. The ads they deliver not only diminish browsing quality (overlay page content) but also carry certain risks themselves. Others hijack browsers and promote fake search engines. It is not uncommon for PUAs to have data tracking abilities as well. They record browsing activity (browsing and search engine histories) and gather users' personal information (IP addresses, geolocations and personal details). This sensitive data is then shared with third parties (potentially, cyber criminals), seeking to misuse it for financial gain. To summarize, unwanted apps can cause browser/system infiltrations and infections, and lead to severe privacy issues, financial losses, even identity theft. To ensure device and user safety - all dubious applications and browser extensions/plug-ins must be removed without delay.

Threat Summary:
Name ERROR 0xC004FC03 virus
Threat Type Phishing, Scam, Social Engineering, Fraud
Fake Claim Cyber criminals pose as Microsoft company employees and claim that a virus error is responsible for a missing system file, causing system failure.
Tech Support Scammer Phone Number +1-833-292-1252
Detection Names (onlinebookreading[.]site)
Kaspersky (Malware), Netcraft (Malicious), Sophos AV (Malicious), Fortinet (Phishing), Full List Of Detections (VirusTotal)
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.
Removal

To eliminate ERROR 0xC004FC03 virus our malware researchers recommend scanning your computer with Spyhunter.
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There are many deceptive sites out there. They typically share common traits, such as using scare-tactics to promote technical support services and/or untrustworthy programs. These webpages show alerts/alarms, concerning "detected" issues/threats and offer to provide tech support and/or software, supposedly able to remove the problems. ERROR # ER36dx9832(3)Norton Subscription Has Expired TodayWindows Antivirus - Critical Alert are a few examples of scams similar to ERROR 0xC004FC03.

How did potentially unwanted applications install on my computer?

Some PUAs have "official" websites, from which they can often be downloaded for "free". These apps also proliferate via download/install setups of other programs. The false marketing technique of pre-packing ordinary software with undesirable or malicious content is called "bundling". Rushed download/installation processes (e.g. used pre-set options, skipped steps, etc.) - endanger devices with potential system infiltrations and infections. Intrusive advertisements spread PUAs as well. Once clicked, said ads can execute scripts to download/install unwanted content without user consent.

How to avoid installation of potentially unwanted applications?

It is recommended to always research products to verify their legitimacy, before downloading/installing them. Only trustworthy and verified download channels should be used. P2P sharing networks (BitTorrent, eMule, Gnutella, etc.), unofficial and free file-hosting sites, third party downloaders and similar sources are considered to be untrustworthy; therefore are advised against use. Download/Installation processes should be treated with caution. That includes reading terms, exploring all possible options, using the "Custom/Advanced" settings and declining to download/install additional apps, tools, functions, etc. Care should be exercised when browsing. Intrusive adverts usually look legitimate and harmless, however they redirect to various questionable webpages (e.g. gambling, pornography, adult-dating and others). Should users encounter ads/redirects of this kind, they are strongly advised to check the system and immediately remove all suspicious applications and/or browser extensions/plug-ins. If your computer is already infected with PUAs, we recommend running a scan with Spyhunter for Windows to automatically eliminate them.

Text presented in "ERROR 0xC004FC03" pop-up:

Windows Security

Microsoft Edge

The server *** is asking for your user name and password.

That server also reports: "Suspicious activity detected due to harmful virus installed in your computer. Call Microsoft Toll Free now @ +1-833-292-1252 for any assistance. Your data is at a serious risk. There is a system file missing due to a harmful virus error, causing system failure. Please contact technicians at Microsoft Toll Free Helpline at @ +1-833-292-1252. PLEASE DO NOT SHUT DOWN OR RESTART YOUR COMPUTER, DOING THAT MAY LEAD TO DATA LOSS AND FAILURE OF OPERATING SYSTEM, HENCE NON BOOTABLE SITUATION RESULTING IN COMPLETE DATA LOSS. CONTACT MICROSOFT TO RESOLVE THE ISSUE ON TOLL FREE NUMBER: +1-833-292-1252".

Instant automatic removal of ERROR 0xC004FC03 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 ERROR 0xC004FC03 virus. Download it by clicking the button below:
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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 error 0xc004fc03 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 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 error 0xc004fc03 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 plugins 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 error 0xc004fc03 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 error 0xc004fc03 virus from your computer, please ask for assistance in our malware support forum.

Post a comment:
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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 virus and spyware activity level today:

Medium threat activity
Medium

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

QR Code
ERROR 0xC004FC03 virus QR code
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Platform: Windows

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