Error MS-77X1 (Tech Support Scam) - Removal Guide

Error MS-77X1 Removal Guide

What is Error MS-77X1?

Error MS-77X1 – a tech support scam that targets German-speaking users

Error MS-77X1Error MS-77X1 is a fake error message that attempts to trick users into calling alleged tech support

Error MS-77X1 pop-up is a scam message that claims that the user's computer was blocked due to detected suspicious activity on it. To seem legitimate, the website looks almost identical to the Microsoft Support website but actually has nothing to do with it. Threat actors use scams such as ERROR # 0xuaO-0x156m(3), WARNING CRITICAL MESSAGE, Your iPhone has been compromised to profit from gullible people.

Error MS-77X1 error message urges users to call fictitious support phone numbers – 0800-101-202 or 1-844-322-2922. The whole page is written in German, meaning that this tech support scan is aimed at German-speaking users. Our research suggests that users might be asked to download malicious software or give remote access to the scam operators by calling these numbers.

Please don't call the given numbers as that may result in hazardous malware infections. Be advised that there's nothing wrong with your computer apart from possibly installed potentially unwanted program (PUP) that could be causing redirects to this site. Websites can't determine whether your device is infected or not. This article explains how to eliminate PUPs that could cause similar notifications, delivery techniques, and threats.

name Error MS-77X1
Type Tech support scam, phishing
imitated site Microsoft Support website
Scam message Windows has been disabled due to suspicious activity
Scam phone numbers 0800-101-202, 1-844-322-2922
Symptoms Fake error messages, fake pop-up errors
Risks By calling the given numbers, users might suffer financial losses. If remote access is granted – malware may be installed
Removal Use reliable anti-malware tools to remove PUPs that cause redirects to this site
Repair To check and fix any corrupted Windows files, use the powerful FortectIntego system repair tool

Internet users can be redirected to websites that show Error MS-77X1 scam message not only by PUPs installed on their devices but also by clicking on deceptive ads, visiting high-risk websites, etc. If you ever come across such a tech support scam – remain calm.

Error MS-77X1 message implies that if the window is closed, the device in use will fail to load again. And sensitive user information might be lost, including:

  • passwords,
  • files on the hard drive,
  • credit card details,
  • logins.

Furthermore, the browser window prevents from closing as printer dialog is displayed. The only way to close that window is by opening Task Manager and terminating the browser task manually. For that, simply press Ctrl + Shift + Esc on your keyboard.

If Error MS-77X1 tech support numbers are called, the operators might ask you to download some software, which could be malicious. On top of that, they might also ask to provide remote access to your device, which would provide unrestricted access to personal files and other important data.

By granting entry to the threat actors, you could get into heaps of trouble. All files could be stolen, deleted, or encrypted. Potentially unwanted programs may be installed. Cybercriminals could even sneak in some hazardous malware,[1] such as trojans, keyloggers, or ransomware.

If you were tricked into calling the fake tech support or gave entry to your PC to the criminals, you have to take precautionary measures immediately. First of all, scan your device with trustworthy anti-malware tools such as SpyHunter 5Combo Cleaner or Malwarebytes and remove Error MS-77X1 along with other suspicious files.

In addition, run system repair with powerful system tune-up tools to restore any damaged or corrupted system files, clean the browser tracking cookies and take care of the overall system health. Experts from[2] recommend doing that with the FortectIntego tool right after Error MS-77X1 removal.

As we've mentioned before, this particular scam might be aimed at German-speaking users, as its whole message (in the pop-up and background) states:

Aufgezeichneter Fehler à:
Windows gemeldeter Download à hxxps://HD-SE***.COM
Fehler # MS-77X1
Windows-Support kontaktieren: 0800-101-202 :
Ignorieren Sie diese wichtige Warnung nicht
Windows wurde aufgrund verdächtiger Aktivitäten blockiert.
Bitte rufen Sie uns innerhalb von 5 Minuten an, um zu
verhindern, dass Ihr Computer deaktiviert wird. Die folgenden
Informationen können verloren gehen:
1. Passwörter
2. Browserverlauf
3. Wichtige Informationen (Kreditkarten)
4. Dateien auf der Festplatte
Ignorieren Sie diese kritische Warnung nicht Wenn Sie diese
Seite schließen, wird Ihr Computerzugriff deaktiviert, um
weitere Schäden an unserem Netzwerk zu verhindern .

Windows-Support kontaktieren: 0800-101-202
Bitte rufen Sie uns an: 0800-101-202
Program firefox.exe
Verified Publisher: Mozilla
Notwendige Maßnahmen:
Kontaktieren Sie uns sofort, damit Unsere
Technikern die Fehler selbst sehen und überprüfen
können. Bitter rufen Sie uns innerhalb 5 minuten an,
um es zu verhindern, sonst Ihr Computer deaktiviert
Ok Jetzt anrufen
Verhindern Sie zusätzliche Dialoge.

Windows-Support kontaktieren: 0800-101-202

Error MS-77X1 scamError MS-77X1 is a scam pop-up that opens print page and prevents users from quitting it

Error MS-77X1 scam could also be targeted at English-speaking users with this error message:

Error # MS-77X1
Contact Windows Support: +1-855-980-0200 :
Do not ignore this important warning
Windows was blocked due to suspicious activity. Please call us within 5 Minutes to prevent your Computer from being deactivated. The following information may be lost:

1. Passwords
2. Browsing History
3. Sensitive information (credit cards)
4. Files on the hard drive

Do not ignore this critical warning if you close this page, your Computer access disabled to prevent further damage to our network .
Contact Windows Support:
Contact Windows Support: +1-855-980-0200
Please call us: +1-855-980-0200
Program firefox.exe
Verified Publisher: Mozilla

Necessary measures: Contact us immediately so that our technicians can guide you through the process of removing the Phone can lead. Please call us within 5 minutes to prevent Your Computer will be disabled.
Ok Call now
Prevent additional dialogs.
+1-855-980-0200 Recorded error à:
Windows reported Download à

Most prevalent PUP distribution methods and how to avoid them

Potentially unwanted programs are infecting more and more users. Junkware can be installed on any device, including Mac, Windows, Android, and others. Once your device is infected with one PUP there's a very good chance that additional ones will find their way too.

Adware, browser hijackers, and other useless software can be downloaded through a distribution technique known as bundling. Researchers reported[3] that PUPs were included in 62% of software downloads from one of the most popular app vendors. The only way to avoid them is to be attentive to what you agree to install on your device.

Users have to choose the Advanced or Custom installation method instead of the Recommended/Quick/Standard mode. Only then can they remove ticks from preselected boxes opting in for installation of apps that they didn't know will be installed on their machines in the first place.

Don't get tricked and remove Error MS-77X1 scam message from affected devices

When Error MS-77X1 pop-up scam is encountered, users mustn't panic. The claims from the threat actors are false. Never call any tech support numbers that you see after seeing error messages while browsing as it will most likely be some sort of a scam.

Remove Error MS-77X1 message from the browser by pressing CTRL + SHIFT + ESC on your keyboard to open Task Manager. In the processes window, choose the browser you were using and right-click on it. Press End Task. The next time you launch your browser, don't choose the “reopen last session” or similar options to prevent the same page from loading.

To finish Error MS-77X1 removal users should do two more things. To eliminate any PUPs that cause redirects to the tech scam website and to make sure that no malicious software is installed by completing a full system scan with trustworthy anti-malware tools. And repair the registry and fix any other system issues by using powerful system tune-up tools.

do it now!
Fortect Happiness
Intego Happiness
Compatible with Microsoft Windows Compatible with macOS
What to do if failed?
If you failed to fix virus damage using Fortect Intego, submit a question to our support team and provide as much details as possible.
Fortect Intego has a free limited scanner. Fortect 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 Fortect, 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.

Getting rid of Error MS-77X1. Follow these steps

Uninstall from Windows

Follow our guidelines to eliminate potentially unwanted programs:

Instructions for Windows 10/8  machines:

  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 the entry of the 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.

Delete from macOS

Remove items from Applications folder:

  1. From the menu bar, select Go > Applications.
  2. In the Applications folder, look for all related entries.
  3. Click on the app and drag it to Trash (or right-click and pick Move to Trash) Uninstall from Mac 1

To fully remove an unwanted app, you need to access Application Support, LaunchAgents, and LaunchDaemons folders and delete relevant files:

  1. Select Go > Go to Folder.
  2. Enter /Library/Application Support and click Go or press Enter.
  3. In the Application Support folder, look for any dubious entries and then delete them.
  4. Now enter /Library/LaunchAgents and /Library/LaunchDaemons folders the same way and terminate all the related .plist files. Uninstall from Mac 2

Remove from Microsoft Edge

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 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

Restore new tab and homepage settings:

  1. Click the menu icon and choose Settings.
  2. Then find On startup section.
  3. Click Disable if you found any suspicious domain.

Reset MS Edge if the 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 Delete Advanced 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” -Verbose Advanced 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, search 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

Remove from Mozilla Firefox (FF)

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 unwanted plugin and click Remove. Remove extensions from Firefox

Reset the homepage:

  1. Click three horizontal lines at the top right corner to open the menu.
  2. Choose Options.
  3. Under Home options, enter your preferred site that will open every time you newly open the Mozilla Firefox.

Clear cookies and site data:

  1. Click Menu and pick Settings.
  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

Reset Mozilla Firefox

If clearing the browser as explained above did not help, 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. Reset Firefox 2

Remove from Google Chrome

Evade pop-ups and redirects by cleaning your Google Chrome browser:

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 the unwanted program 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

Change your homepage:

  1. Click menu and choose Settings.
  2. Look for a suspicious site in the On startup section.
  3. Click on Open a specific or set of pages and click on three dots to find the Remove option.

Reset Google Chrome:

If the previous methods did not help you, reset Google Chrome to eliminate all the unwanted 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. Reset Chrome 2

Delete from Safari

Remove unwanted extensions from Safari:

  1. Click Safari > Preferences…
  2. In the new window, pick Extensions.
  3. Select the unwanted extension 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

How to prevent from getting viruses

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
Linas Kiguolis
Linas Kiguolis - Expert in social media

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