Butitereventwil.info ads: what it is and how to remove it
Butitereventwil.info is the adware-type cyber threat that is designed to generate views and visits on various sponsored sites. This is why the main symptoms of this potentially unwanted program are redirects to questionable websites and promotional content delivery.
Facts checked October 6, 2026. Removal steps tested on Windows 11 (26H2) and checked against Microsoft's and the browser makers' current documentation. Sections marked as our earlier report are the original text: they describe the threat as it was then and have not been reviewed since. The 2026 status, the removal steps and the questions are current.
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Butitereventwil.info ads: summary
| Distribution | Deceptive advertisements, software bundles |
|---|---|
| Name | Butitereventwil.info |
| Type | Adware |
| Category | Potentially unwanted program |
| Subdomains | ku6b.butitereventwil.info, b8zt.butitereventwil.info, jd57.butitereventwil.info, ixel.butitereventwil.info, v9q0.butitereventwil.info, etc. |
| Symptoms | Intrusive commercial content, redirects, promotional advertisements, sluggish performance |
| Removal | Scan the PC with security software to find and remove the malware and anything installed with it. Fortect scans Windows for malware and repairs the system files and settings it damaged. Remove it nowTo use the full-featured product, you have to purchase a license for Fortect. The scan is free. |
Show 9 more facts
| Possible danger | May lead to privacy issues due to the data tracking and collecting issue |
|---|---|
| Detection names | No Microsoft detection name is known |
| Damage | Not recorded in the old report |
| Evidence | 4 write-ups by security sites; details still limited |
| Domains | butitereventwil.info |
| Ads shown as | Redirects through ad pages |
| Browsers | Chrome, Edge and Firefox |
| First seen | 15 April 2019 |
| Facts checked | 6 October 2026 |
Is Butitereventwil.info ads dangerous?
From our report of Apr 2019 · not reviewed since
Butitereventwil.info is the site that displays "Confirm notifications" message to trick users into subscribing to unwanted commercial content
Butitereventwil.info is the adware-type cyber threat that is designed to generate views and visits on various sponsored sites.
This is why the main symptoms of this potentially unwanted program are redirects to questionable websites and promotional content delivery. Extra features that indicate the PUP infection include slowness of the browser and the machine in general, significantly diminished time online.
It becomes barely possible to access the wanted sites, preferred content and work on the computer as normal because of the constant interruption due to the promotional ads, commercial banners, and redirects.
Encountering constant redirects to suspicious sites, other sites, and upper-mentioned symptoms means that your machine is infected with an adware-type potentially unwanted program. All that intrusive behavior is only the easily noticeable feature. Potentially unwanted programs are associated with advertisers and different sponsors, so once the system is infiltrated, users' data gets tracked and collected. Information includes search queries, other browsing habits, IP addresses, location.
When the computer starts running slow and crashes or freezes from time to time, a user should consider checking the system with or a similar program because such issues mean that the device is infected with a potentially unwanted program or even a more severe cyber threat or the particular Butitereventwil.info virus.
Unfortunately, commercial content delivery, promotional advertisements, redirects to suspicious sites and similar frustrating behavior are features that can be noticed easily. A more dangerous feature that every PUP including this adware has is a data tracking and collecting that involves users' non-identifiable information.
Once the system is infiltrated, Butitereventwil.info and associated advertisers get access to:
The application can also be called a push notifications virus because it delivers a pop-up message on the browser that asks to allow additional content. Once the user interacts with the message or even clicks "Allow", notification preferences get altered on Google Chrome, Mozilla Firefox or any other browsers.
Then Butitereventwil.info delivers messages, links to questionable sites. In most cases, push notifications appears directly on your desktop and this activity starts once the computer is restarted, the browser may still be closed at the time. However, to end this behavior, you need to change all those Notification preferences back to default.
You should firstly remove the program itself and other associated PUPs, so the system gets cleaned properly, and you can make additional changes to ensure there is no opportunity for infection repetition or any other cyber threat infiltration. When the computer is virus-free, all changes can be made safely.
Often threats like adware, the browser hijackers can alter startup program preferences and make sure that this application gets automatically launched on the system after each reboot. Due to these changes, it becomes difficult to eliminate.
Make sure that all browser extensions or add-ons installed by Butitereventwil.info get deleted and obliterated from the web browser. For that, you may need to set the browser to default or follow these steps to end intrusive notifications:
Experts note that it is essential to use the automatic PUP removal method and professional anti-malware tools for the process. This way, your device gets thoroughly checked for different types of intruders and malware programs. When a tool like or indicates threats, you can easily delete them all from the PC. Use a tool like and repair the system after the cyber infection.
- IP address;
- location;
- details about the software and hardware;
- any data stored on the machine;
- search queries;
- most visited sites;
- commonly searched items.
- Go to Advanced settings on your browser.
- You should find a Content settings section.
- Under that section and Privacy & Security preferences, locate Notifications.
- Find Butitereventwil.info and Block or Remove it from the list.
From our report of Apr 2019 · not reviewed since
Intrusive advertisements and third-party installers trick users into installing PUPs
Potentially unwanted programs come to the system hidden in software bundles, packed with third-party freeware or included into setups, direct download links.
Users get these programs unintentionally because often one click on the deceptive advertisement or a hyperlink leads to automatic installation.
Bundling technique is used to trick users into downloads and installations of PUPs that get packed with freeware that people often get on purpose. During such installations, developers don't disclose the additional applications and skipping through steps allows them all to get on the machine.
Custom or Advanced options, on the other hand, allows de-selecting such additional programs from the list. Many people install software, updates or applications without checking such settings and options and this is how all potentially unwanted programs get installed on the machine.
From our report of Apr 2019 · not reviewed since
More from our earlier report on Butitereventwil.info
- Employ anti-malware tool for system cleaning and virus removal.
- We can recommend choosing after the process to find and fix damaged pieces
Check your browser and PC
- Address:
butitereventwil.info
How to remove Butitereventwil.info ads
How to remove the Butitereventwil.info extension
Do the browser steps in every browser and profile on the PC, then check Windows for the program that installed the extension.
Step 1: Remove extensions you did not add
Butitereventwil.info often works through an extension, so go through the extension list of each browser:
chrome://extensionsedge://extensions- Extensions and themes in Firefox
Switch suspicious extensions off one at a time and reload the page where the problem shows, then remove the one that stops it, and any other you did not add.
Remember the other browsers and profiles on the PC. If Remove is missing or greyed out, a policy forces the extension, which the policy step deals with. Windows 11 and Windows 10 show the same pages.
Chrome on Windows 11: More > Extensions > Manage extensions. Full procedure with screenshots: Remove a browser extension
Step 2: Uninstall programs you did not mean to install
Open Settings > Apps > Installed apps in Windows 11, or Settings > Apps > Apps & features in Windows 10, and sort the list by install date. Look at what appeared around the day the problem started and uninstall every program you do not recognise or did not choose.
Free converters, PDF and video tools, "system optimizers" and unknown browsers are the usual carriers of Butitereventwil.info. If a name is unclear, search for it before you remove it, so you do not uninstall a driver or a Windows component.
Full procedure with screenshots: Uninstall a program or app in Windows On uGetFix
Step 3: Reset the browser
Finish the browser part with a reset, which puts the search engine, start page, new tab page and site permissions back to their defaults and switches extensions off. Chrome: Settings > Reset settings > Restore settings to their original defaults.
Edge: Settings > Reset settings. Firefox: Help > More troubleshooting information > Refresh Firefox, which also removes its extensions. Your bookmarks and saved passwords are kept, and the menus are the same on Windows 11 and Windows 10.
Chrome on Windows 11: Settings > Reset settings. Full procedure with screenshots: Reset a browser and fix a hijacked search engine
Step 4: Scan the PC, then run the offline scan
Open Windows Security > Virus & threat protection > Scan options, run a Full scan and remove everything it finds. Then select Microsoft Defender Antivirus (offline scan) and click Scan now: the PC restarts and scans before Windows loads, which finds files that hide while Windows runs.
Save your work first, because the offline scan takes about 15 minutes. Both scans are built into Windows 11 and Windows 10, and a second scanner from another vendor is a useful extra opinion.
Windows 11: Windows Security > Virus & threat protection > Scan options. Full procedure with screenshots: Run a Microsoft Defender Offline scan
Instructions for each browser and system
The detailed steps for every browser and system this guide covers. Open the one you use.
Uninstall from Windows
Uninstall from Windows 10/8:
- Type Control Panel into the Windows search box and open the result.
- Under Programs, select Uninstall a program.
Uninstall from Windows 7/XP:
- Click on Windows Start > Control Panel (Windows XP users should click on Add/Remove Programs).
- In Control Panel, select Programs > Uninstall a program.
Remove the unwanted program:
- In the Programs and Features window, look for any recently installed suspicious entries, select them, and click Uninstall.
- If User Account Control appears, click Yes to confirm, then complete the removal.
Remove from Google Chrome
Delete malicious extensions from Google Chrome:
- Open Google Chrome, click on the Menu (three vertical dots at the top-right corner) and select More tools > Extensions.
- In the newly opened window, you will see all the installed extensions. Uninstall all suspicious extensions related to the unwanted program by clicking Remove.
Clear cache and web data from Chrome:
- Click on Menu and pick Settings.
- Under Privacy and security, select Clear browsing data.
- Select Browsing history, Cookies and other site data, as well as Cached images and files.
- Click Clear data.
Change your homepage:
- Click menu and choose Settings.
- Look for a suspicious site in the On startup section.
- 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:
- Click on Menu and select Settings.
- In the Settings, scroll down and click Advanced.
- Scroll down and locate Reset and clean up section.
- Now click Restore settings to their original defaults.
- Confirm with Reset settings.
Remove from Microsoft Edge
Delete unwanted extensions from MS Edge:
- Select Menu (three horizontal dots at the top-right of the browser window) and pick Extensions.
- From the list, pick the extension and click on the Gear icon.
- Click Remove.
Clear cookies and other browser data:
- Click on the Menu (three horizontal dots at the top-right of the browser window) and select Settings > Privacy, search, and services..
- Under Clear browsing data, pick Choose what to clear.
- Select Cookies and other site data and Cached images and files. (apart from passwords, although you might want to include Media licenses as well, if applicable) and click on Clear.
Restore new tab and homepage settings:
- Click the menu icon and choose Settings.
- Then find On startup section.
- Click Remove next to any suspicious startup page.
Reset MS Edge if the above steps did not work:
- Press on Ctrl + Shift + Esc to open Task Manager.
- Click on More details arrow at the bottom of the window.
- Select Details tab.
- 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.
Delete extensions from MS Edge (Chromium):
- Open Edge and click select Settings > Extensions.
- Delete unwanted extensions by clicking Remove.
Clear cache and site data:
- Click on Menu and go to Settings.
- Select Privacy, search and services.
- Under Clear browsing data, pick Choose what to clear.
- Under Time range, pick All time.
- Select Clear now.
Reset Chromium-based MS Edge:
- Click on Menu and select Settings.
- On the left side, pick Reset settings.
- Select Restore settings to their default values.
- Confirm with Reset.
- This will disable extensions and reset startup pages but will not delete bookmarks, saved passwords, or browsing history.
Remove from Mozilla Firefox (FF)
Remove dangerous extensions:
- Open Mozilla Firefox browser and click on the Menu (three horizontal lines at the top-right of the window).
- Select Add-ons.
- In here, select the unwanted extension and click Remove.
Reset the homepage:
- Click three horizontal lines at the top right corner to open the menu.
- Choose Settings.
- Under Home, set your preferred homepage and new tab settings.
Clear cookies and site data:
- Click Menu and pick Settings.
- Go to Privacy & Security section.
- Scroll down to locate Cookies and Site Data.
- Click on Clear Data...
- Select Cookies and Site Data and Temporary cached files and pages, then click Clear.
Reset Mozilla Firefox
If clearing the browser as explained above did not help, reset Mozilla Firefox:
- Open Mozilla Firefox browser and click the Menu.
- Go to Help and then choose Troubleshooting Information.
- Under Give Firefox a tune up section, click on Refresh Firefox...
- Once the pop-up shows up, confirm the action by pressing on Refresh Firefox.
Delete from Safari
Remove dangerous extensions:
- Open Safari, click Safari in the menu at the top-left of the screen, and select Preferences.
- Go to the Extensions tab, look for any suspicious entries, and click Uninstall to remove them.
Clear history and website data:
- Click Safari in the menu and pick Clear History.
- Set Clear to all history and confirm with Clear History.
Reset Safari:
- Click Safari in the menu and select Preferences > Advanced.
- Enable Show Develop menu in menu bar.
- From the menu bar, click Develop and select Empty Caches.
Delete from macOS
Remove the unwanted application:
- From the menu bar, select Go > Applications.
- In the Applications folder, look for any suspicious entries, then drag them to Trash (or right-click and pick Move to Trash).
Delete leftover files and folders:
- Select Go > Go to Folder.
- Enter /Library/Application Support and remove any suspicious folders related to the unwanted program.
- Repeat the same check in the /Library/LaunchAgents and /Library/LaunchDaemons folders, deleting any suspicious entries.
- Finally, empty the Trash to permanently remove the leftovers.
Stream videos without limitations, no matter where you are
There are multiple parties that could find out almost anything about you by checking your online activity.
While this is highly unlikely, advertisers and tech companies are constantly tracking you online. The first step to privacy should be a secure browser that focuses on tracker reduction to a minimum.
Even if you employ a secure browser, you will not be able to access websites that are restricted due to local government laws or other reasons. In other words, you may not be able to stream Disney+ or US-based Netflix in some countries. To bypass these restrictions, you can employ a powerful VPN, which provides dedicated servers for torrenting and streaming, not slowing you down in the process.
Data backups are important - recover your lost files
Ransomware is one of the biggest threats to personal data.
Once it is executed on a machine, it launches a sophisticated encryption algorithm that locks all your files, although it does not destroy them. The most common misconception is that anti-malware software can return files to their previous states. This is not true, however, and data remains locked after the malicious payload is deleted.
While regular data backups are the only secure method to recover your files after a ransomware attack, tools such as can also be effective and restore at least some of your lost data.
From our report of Apr 2019 · not reviewed since
Eliminate Butitereventwil.info and end intrusive ads and redirects
Remove any intrusive programs as soon as you notice the significant change in the speed of your computer or the intrusive commercial content.
It is important to react soon after the infiltration, so the process of collecting data can end as soon as possible
Remember that Butitereventwil.info removal requires a professional anti-malware program and a full system scan that allows detecting all possible threats and terminate them all at once. Antivirus programs also should run on the system all the time, so questionable or even malicious sites get blocked in advance.
Questions about Butitereventwil.info ads
How do I stop butitereventwil.info from opening?
Find and remove whatever opens it. Start with the browser's extensions page and remove anything you do not remember adding. Next, open the notification settings and take away permission from sites you do not recognise.
Then check Settings > Apps > Installed apps for programs added around the day the redirects began, and uninstall those. Restart the browser and test a few links after each step.
If butitereventwil.info still appears, reset the browser, which restores the default search engine, start page and permissions without deleting bookmarks or saved passwords. Redirects that survive a reset in every browser point to a program in Windows, and a full scan is the next step.
Did butitereventwil.info install a virus on my PC?
Very unlikely, unless you downloaded and opened something from the pages it led to. Redirect domains such as butitereventwil.info sell your visit to advertisers; they do not need to install anything to make money.
What can be installed is the thing that causes the redirects in the first place, such as an extension or an ad-supported program that came with free software. That is why the checks in this guide look at extensions, notification permissions and Installed apps.
A full scan with Microsoft Defender afterwards gives you a clear answer about the rest of the PC. If the scan is clean and the redirects stop after removing the cause, you are done.
What is Butitereventwil.info?
Butitereventwil.info is an adware extension, a kind of adware. It earns money by showing redirects through ad pages, and each view, click or redirect pays whoever runs it. It is not something people usually choose; it arrives through a free download, a fake button or a misleading prompt.
Butitereventwil.info does not encrypt files or take control of Windows, but its ads are sold to anyone, including scam operators, so they can lead to fake virus warnings and unwanted downloads. The steps in this guide remove it from Windows and from each browser.
Which browsers does Butitereventwil.info affect?
In the cases we checked, Butitereventwil.info showed up in Chrome, Edge and Firefox. That does not rule out others on your PC, since adware installers often target every browser they find, and permissions and extensions sync across computers signed in to the same browser account.
Open each browser you have, go to its extensions page and its notification settings, and remove anything you do not recognise. Profiles count separately: Chrome and Edge can each hold several, and each one needs checking on its own.
Are the pop-ups I see really from Butitereventwil.info?
Compare them with the details in the table above. Butitereventwil.info produces redirects through ad pages, and the clearest sign of it is redirects to butitereventwil.info. Other adware looks similar, so check the name of the sending site at the bottom of a notification, the address in the tab that opened, or the newest entries on the extensions page.
If those match, this guide fits. If you see a different name, the same kind of steps apply, but remove the item you actually find rather than guessing.
I let a "support technician" from an ad connect to my PC. What should I do?
Act quickly but calmly. Disconnect the PC from the internet first, so the connection ends. Uninstall the remote access tool they asked you to install and check Installed apps for anything else added during the call.
Run a Microsoft Defender full scan and offline scan. From another device, change your e-mail and banking passwords and sign out of all sessions.
If you paid by card, bank transfer or gift card, contact your bank or the card issuer immediately, and report the scam to the police. Do not answer if they call back.
Can an adware pop-up infect my PC just by appearing?
No. A pop-up, a notification or a new tab is only a web page or a message. It cannot run programs on Windows by itself, provided the browser and Windows are up to date. Infection needs a step from you:
- running a downloaded file
- installing an extension
- giving a stranger remote access
That is why scam pages work so hard to make you click. Close such pages with the tab's X or by closing the browser, not with buttons inside the page, which may start a download.
Why is my browser so slow since the ads started?
Each page now does extra work. An adware extension reads the page, decides where to put ads, loads them from ad servers and reports your visit, and that happens on every tab. Ad-supported programs add their own background activity.
Removing the extension or program usually makes the browser fast again at once. If it stays slow, open the browser's own task manager with Shift+Esc in Chrome or Edge and look for extensions using a lot of memory or processor time.
My scan found nothing, but the ads continue. Why?
Because the source may not be a file a scanner looks for. Browser notifications are a permission stored in the browser, and many adware extensions are not flagged because they come from an official store.
Some ad-supported programs are only reported if you enable detection of potentially unwanted apps. So a clean scan does not mean the job is done. Check each browser's notification permissions and extension list by hand, and turn on Potentially unwanted app blocking in Windows Security before scanning again.
Will Fortect remove Butitereventwil.info?
Fortect scans Windows for malware and unwanted programs and repairs the system files and settings they change, and its free scan shows what it finds on your PC before you decide anything.
For Butitereventwil.info, follow the plan above as well: the browser steps take back permissions and settings that no scanner treats as a threat, and uninstalling the program that brought it removes the source.
Run Microsoft Defender's full scan and, if anything was found, its offline scan as a second opinion. If the symptoms are gone after the plan and both scans are clean, there is nothing more to do.
Sources
- Decisionanalyst: Advertising tracking (read October 6, 2026)
- Piwik: What is PII, Non-PII? (read October 6, 2026)
- Semvirus: Semvirus (read October 6, 2026)
- Google Chrome Help: Use notifications to get alerts (no longer online) (read October 6, 2026)
- FTC: How to recognize, remove and avoid malware (read October 6, 2026)