Severity scale:  

Remove “Microsoft Error: Unknown System Failure” pop-up virus (Removal Guide) - Free Instructions

removal by Olivia Morelli - - | Type: Adware

“Microsoft Error: Unknown System Failure” is a scam virus which forces people to believe that their personal data is in danger

“Microsoft Error: Unknown System Failure" virus

Microsoft Error: Unknown System Failure is a scam which bombards the screen with deceptive notifications that claim scary things. If you take a look at these messages, you should see that they are far from looking alike as original notifications. However, some people fall for believing that system failure has occurred and sensitive information is put at risk. Additionally, Error: Unknown System Failure might act not only as a technical support scam[1] but also have signs of adware as scamming content is often a sign of an ad-supported program[2] hiding in the system.

Name Microsoft Error: Unknown System Failure
Type Scam/potentially unwanted program
Goal To convince users to dial via the provided mobile phone number and reveal some details about his/her system or swindle money by offering purchase of fake security software
Caused by Usually, adware is the main cause of such scamware but it can also be met on third-party networks or while using illegitimate services on the Internet sphere
Possible danger Users can run into data theft after revealing important information, experience remote access to their computers which might lead to secret malware infiltration
Spreading Bundles of original products often carry potentially unwanted content such as adware
Elimination Use Reimage Reimage Cleaner Intego for the removal of this scam. Manual guidelines are also provided at the end of the page

Content that comes from Microsoft Error: Unknown System Failure pop-up virus can never be trusted. Once you receive such message, you will be told that your computer system is severely damaged, that personal data of yours is at risk of exposure, and the only way to fix all problems is by contacting the fake Microsoft support.

Together with Error: Unknown System Failure you will see a suspicious number added. Note that calling it is not recommendable at all as you will find only scammers hiding there. Once you reach them, you will supposedly be urged to provide some sensitive information about yourself or give remote access for “fixing purposes”.

If hackers connect to your computer, they might monitor various malicious actions such as gathering sensitive information, injecting malware,[3] mining cryptocurrency, and running different types of malicious processes in the background. You should remove Microsoft Error: Unknown System Failure from the computer and avoid dialing the fake number.

Nevertheless, scammers who are supporting Error: Unknown System Failure might also promote fake security software and provoke users to download such false programs by convincing them that the tool will take care of all system error, no more threats will be lurking in the machine, and it will work at maximum speed.

“Microsoft Error: Unknown System Failure" adware virus illustration“Microsoft Error: Unknown System Failure" a scam which can be met on potentially infectious websites

Our suggestion would be not to postpone the Microsoft Error: Unknown System Failure removal and get rid of the adware program that is causing the scam message to bombard your computer screen. Using Reimage Reimage Cleaner Intego will automatically get rid of the cyber threat and all additional content that it might have brought to the machine.

For those who have no security software installed, we have prepared a brief guide on how to recognize fake messages such as Error: Unknown System Failure manually:

  • When you see a security alert or notification informing about some supposed PC infection or error, pay attention where this alert is displayed. If you find it displayed on some random web page, there is no doubt that the notification is purely a scam. You should close such website immediately and scan your PC with antivirus software.
  • Analyze the content of the message. This particular virus will usually threaten that the security of your device is at stake and you may lose some of your valuable information if you do not take action to fix it. Most TTS scams will indicate a phone number, urging the victims to call it and receive some help from Microsoft professionals. Here is an example illustrating contents of the fraudulent popup:

Microsoft Error: Unknown System Failure
Internal Configuration: Altered Your Windows Firewall Has Been Disabled
Possibly due to Internet Infection or Unauthorized Connection through your IP-Address It can cause the following things; 1) Possible Data Loss
2) Identity Theft
3) Loss of Email/Social Networking/ Personal Passwords
4) Credentials Stored or Used on the Computer Consule Microsoft Network Security Advisor
Immediately on the Toll Free Number:

  • Run a test drive with a professional antivirus utility. Legitimate tools will provide you with a genuine report about your computer’s situation, and it will most likely indicate adware infection which you will have to get rid of. For more suggestions on how to remove Microsoft Error: Unknown System Failure virus from your PC skip to the end of the article.

“Microsoft Error: Unknown System Failure" scam“Microsoft Error: Unknown System Failure" is a completely fake message which tries to provoke you to dial the given phone number

Embedding adware on the computer

According to researchers from,[4] potentially unwanted programs are one of the most common threats distributed throughout the wild. Unfortunately, not all users are aware of how adware enters computers. If you are one of those people, you should remember that the main vector of adware distribution is software packages.

Suspicious applications often get bundled with some popular freeware[5] or shareware application and install on the computer when Quick or Recommended settings are chosen for the software installation mode. That is why the main reason why users often complain about potentially unwanted programs appearing out of nowhere.

To avoid undesirable programs, you should always choose Advanced or Custom installation modes and deselect additional components manually. Furthermore, staying away from suspicious-looking websites is also a measure you should take to ensure your computer's safety. It would be even easier if you used antimalware with a safe browsing function.

Eliminate “Microsoft Error: Unknown System Failure” scam from your PC

In order to remove “Microsoft Error: Unknown System Failure” from your PC successfully, you should locate and delete the root of all problems — the adware program. It may be disguised as some small program or a browser helper object, thus it is useful to have some specialized software to determine the potentially unwanted components automatically.

Instructions that our experts have prepared below this article may also help you perform “Microsoft Error: Unknown System Failure” removal manually, but if you want to save time, you should definitely choose the automatic elimination option instead. You can install a program from our suggested list or any other similar tool of your likings.

If “Microsoft Error: Unknown System Failure” pop-up is not just a simple occurrence on a third-party website and the cause of its appearance is adware, you should check web browsers for adware-related content also. Furthermore, you might find your browser settings altered which also needs to be undone for further proper usage.

You may remove virus damage with a help of Reimage Reimage Cleaner Intego. SpyHunter 5Combo Cleaner and Malwarebytes are recommended to detect potentially unwanted programs and viruses with all their files and registry entries that are related to them.

do it now!
Reimage Happiness
Intego Happiness
Compatible with Microsoft Windows Supported versions Compatible with OS X Supported versions
What to do if failed?
If you failed to remove virus damage using Reimage Intego, submit a question to our support team and provide as much details as possible.
Reimage Intego has a free limited scanner. Reimage Intego offers more through scan when you purchase its full version. When free scanner detects issues, you can fix them using free manual repairs or you can decide to purchase the full version in order to fix them automatically.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Reimage, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Intego, try running Combo Cleaner.

To remove “Microsoft Error: Unknown System Failure” pop-up virus, follow these steps:

Remove “Microsoft Error: Unknown System Failure” pop-up from Windows systems

In case you cannot exit the website you are seeing the“Microsoft Error: Unknown System Failure” error on, you should enter Windows Task Manager by pressing CTRL+ALT+DEL and terminate the browser from there. Then follow instructions below:

To remove “Microsoft Error: Unknown System Failure” pop-up from Windows 10/8  machines, please follow these steps:

  1. Enter Control Panel into Windows search box and hit Enter or click on the search result.
  2. Under Programs, select Uninstall a program.Uninstall from Windows 1
  3. From the list, find entries related to “Microsoft Error: Unknown System Failure” pop-up (or any other recently installed suspicious program).
  4. Right-click on the application and select Uninstall.
  5. If User Account Control shows up, click Yes.
  6. Wait till uninstallation process is complete and click OK.Uninstall from Windows 2

If you are Windows 7/XP user, proceed with the following instructions:

  1. Click on Windows Start > Control Panel located on the right pane (if you are Windows XP user, click on Add/Remove Programs).
  2. In Control Panel, select Programs > Uninstall a program.Uninstall from Windows 7/XP
  3. Pick the unwanted application by clicking on it once.
  4. At the top, click Uninstall/Change.
  5. In the confirmation prompt, pick Yes.
  6. Click OK once the removal process is finished.

Erase “Microsoft Error: Unknown System Failure” pop-up from Mac OS X system

  1. If you are using OS X, click Go button at the top left of the screen and select Applications. Cick 'Go' and select 'Applications'
  2. Wait until you see Applications folder and look for “Microsoft Error: Unknown System Failure” pop-up or any other suspicious programs on it. Now right click on every of such entries and select Move to Trash. Click on every malicious entry and select 'Move to Trash'

Eliminate “Microsoft Error: Unknown System Failure” pop-up from Internet Explorer (IE)

You should eliminate all dubious content from your Internet Explorer browser. Look for suspicious extensions, plug-ins, and add-ons:

Remove dangerous add-ons:

  1. Open Internet Explorer, click on the Gear icon (IE menu) on the top-right corner of the browser
  2. Pick Manage Add-ons.
  3. You will see a Manage Add-ons window. Here, look for “Microsoft Error: Unknown System Failure” pop-up and other suspicious plugins. Click on these entries and select Disable.Remove add-ons from Internet Explorer

Change your homepage if it was altered:

  1. Open IE and click on the Gear icon.
  2. Select Internet Options.
  3. In the General tab, delete the Home page address and replace it by your preferred one (for example,
  4. Click Apply and then select OK.Reset IE homepage

Delete temporary files:

  1. Press on the Gear icon and select Internet Options.
  2. Under Browsing history, click Delete…
  3. Select relevant fields and press Delete.Clear temporary files from Internet Explorer

Reset Internet Explorer:

  1. Click on Gear icon > Internet options and select Advanced tab.
  2. Select Reset.
  3. In the new window, check Delete personal settings and select Reset again to complete “Microsoft Error: Unknown System Failure” pop-up removal.Reset Internet Explorer

Get rid of “Microsoft Error: Unknown System Failure” pop-up virus from Microsoft Edge

Resetting your Microsoft edge browser may help you eliminate remaining changes that the virus could have made to it:

Delete unwanted extensions from MS Edge:

  1. Select Menu (three horizontal dots at the top-right of the browser window) and pick Extensions.
  2. From the list, pick the “Microsoft Error: Unknown System Failure” pop-up-related extension and click on the Gear icon.
  3. Click on Uninstall at the bottom.Remove extensions from Edge

Clear cookies and other browser data:

  1. Click on the Menu (three horizontal dots at the top-right of the browser window) and select Privacy & security.
  2. Under Clear browsing data, pick Choose what to clear.
  3. Select everything (apart from passwords, although you might want to include Media licenses as well, if applicable) and click on Clear.Clear Edge browsing data

Reset MS Edge if that above steps did not work:

  1. Press on Ctrl + Shift + Esc to open Task Manager.
  2. Click on More details arrow at the bottom of the window.
  3. Select Details tab.
  4. Now scroll down and locate every entry with Microsoft Edge name in it. Right-click on each of them and select End Task to stop MS Edge from running.Reset MS Edge

If this solution failed to help you, you need to use an advanced Edge reset method. Note that you need to backup your data before proceeding.

  1. Find the following folder on your computer: C:\\Users\\%username%\\AppData\\Local\\Packages\\Microsoft.MicrosoftEdge_8wekyb3d8bbwe.
  2. Press Ctrl + A on your keyboard to select all folders.
  3. Right-click on them and pick DeleteAdvanced MS Edge reset 1
  4. Now right-click on the Start button and pick Windows PowerShell (Admin).
  5. When the new window opens, copy and paste the following command, and then press Enter:

    Get-AppXPackage -AllUsers -Name Microsoft.MicrosoftEdge | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\\AppXManifest.xml” -VerboseAdvanced MS Edge reset 2

Instructions for Chromium-based Edge

Delete extensions from MS Edge (Chromium):

  1. Open Edge and click select Settings > Extensions.
  2. Delete unwanted extensions by clicking Remove.Remove extensions from Chromium Edge

Clear cache and site data:

  1. Click on Menu and go to Settings.
  2. Select Privacy and services.
  3. Under Clear browsing data, pick Choose what to clear.
  4. Under Time range, pick All time.
  5. Select Clear now.Clear browser data from Chroum Edge

Reset Chromium-based MS Edge:

  1. Click on Menu and select Settings.
  2. On the left side, pick Reset settings.
  3. Select Restore settings to their default values.
  4. Confirm with Reset.Reset Chromium Edge

Delete “Microsoft Error: Unknown System Failure” pop-up from Mozilla Firefox (FF)

Use these helping lines to clean the entire Mozilla Firefox browser application as the potentially unwanted program might have left some suspicious objects in it:

Remove dangerous extensions:

  1. Open Mozilla Firefox browser and click on the Menu (three horizontal lines at the top-right of the window).
  2. Select Add-ons.
  3. In here, select plugins that are related to “Microsoft Error: Unknown System Failure” pop-up and click Remove.Remove extensions from Firefox

Clear cookies and site data:

  1. Click Menu and pick Options.
  2. Go to Privacy & Security section.
  3. Scroll down to locate Cookies and Site Data.
  4. Click on Clear Data…
  5. Select Cookies and Site Data, as well as Cached Web Content and press Clear.Clear cookies and site data from Firefox

In case “Microsoft Error: Unknown System Failure” pop-up did not get removed after following the instructions above, reset Mozilla Firefox:

  1. Open Mozilla Firefox browser and click the Menu.
  2. Go to Help and then choose Troubleshooting Information.Reset Firefox 1
  3. Under Give Firefox a tune up section, click on Refresh Firefox…
  4. Once the pop-up shows up, confirm the action by pressing on Refresh Firefox – this should complete “Microsoft Error: Unknown System Failure” pop-up removal.Reset Firefox 2

Uninstall “Microsoft Error: Unknown System Failure” pop-up from Google Chrome

Before resetting your Google Chrome browser, eliminate all extension, toolbars, add-ons and other suspicious content from your browser. Then, perform these actions:

Delete malicious extensions from Google Chrome:

  1. Open Google Chrome, click on the Menu (three vertical dots at the top-right corner) and select More tools > Extensions.
  2. In the newly opened window, you will see all the installed extensions. Uninstall all the suspicious plugins that might be related to “Microsoft Error: Unknown System Failure” pop-up by clicking Remove.Remove extensions from Chrome

Clear cache and web data from Chrome:

  1. Click on Menu and pick Settings.
  2. Under Privacy and security, select Clear browsing data.
  3. Select Browsing history, Cookies and other site data, as well as Cached images and files.
  4. Click Clear data.Clear cache and web data from Chrome

If the above-methods did not help you, reset Google Chrome to eliminate all the “Microsoft Error: Unknown System Failure” pop-up-components:

  1. Click on Menu and select Settings.
  2. In the Settings, scroll down and click Advanced.
  3. Scroll down and locate Reset and clean up section.
  4. Now click Restore settings to their original defaults.
  5. Confirm with Reset settings to complete “Microsoft Error: Unknown System Failure” pop-up removal.Reset Chrome 2

Remove “Microsoft Error: Unknown System Failure” pop-up from Safari

Remove unwanted extensions from Safari:

  1. Click Safari > Preferences…
  2. In the new window, pick Extensions.
  3. Select the unwanted extension related to “Microsoft Error: Unknown System Failure” pop-up and select Uninstall.Remove extensions from Safari

Clear cookies and other website data from Safari:

  1. Click Safari > Clear History…
  2. From the drop-down menu under Clear, pick all history.
  3. Confirm with Clear History.Clear cookies and website data from Safari

Reset Safari if the above-mentioned steps did not help you:

  1. Click Safari > Preferences…
  2. Go to Advanced tab.
  3. Tick the Show Develop menu in menu bar.
  4. From the menu bar, click Develop, and then select Empty Caches.Reset Safari

Do not let government spy on you

The government has many issues in regards to tracking users' data and spying on citizens, so you should take this into consideration and learn more about shady information gathering practices. Avoid any unwanted government tracking or spying by going totally anonymous on the internet. 

You can choose a different location when you go online and access any material you want without particular content restrictions. You can easily enjoy internet connection without any risks of being hacked by using Private Internet Access VPN.

Control the information that can be accessed by government any other unwanted party and surf online without being spied on. Even if you are not involved in illegal activities or trust your selection of services, platforms, be suspicious for your own security and take precautionary measures by using the VPN service.

Backup files for the later use, in case of the malware attack

Computer users can suffer from data losses due to cyber infections or their own faulty doings. Ransomware can encrypt and hold files hostage, while unforeseen power cuts might cause a loss of important documents. If you have proper up-to-date backups, you can easily recover after such an incident and get back to work. It is also equally important to update backups on a regular basis so that the newest information remains intact – you can set this process to be performed automatically.

When you have the previous version of every important document or project you can avoid frustration and breakdowns. It comes in handy when malware strikes out of nowhere. Use Data Recovery Pro for the data restoration process.

About the author
Olivia Morelli
Olivia Morelli - Ransomware analyst

If this free removal guide helped you and you are satisfied with our service, please consider making a donation to keep this service alive. Even a smallest amount will be appreciated.

Contact Olivia Morelli
About the company Esolutions


Your opinion regarding “Microsoft Error: Unknown System Failure” pop-up virus