Check Weather Adware
Written by Tomas Meskauskas on (updated)
What is Check Weather?
Check Weather is a deceptive application that supposedly provides local weather forecasts. On initial inspection, this functionality may appear legitimate and useful, however, this potentially unwanted program (PUP) often infiltrates systems without permission and continually records various information.
Furthermore, Check Weather is classed as adware - a form of unwanted software that feeds users with numerous 'malvertising' ads.
This adware generates pop-up, coupon, banners, and other 'malvertising' ads by employing various tools that enable placement of third party graphical content on any site. Therefore, displayed advertisements often conceal underlying website content, thereby significantly diminishing users' Internet browsing experience.
Furthermore, some of these ads lead to malicious websites and, in certain cases, execute scripts that download/install malware. Therefore, clicking them might cause further high-risk adware or malware infections. Check Weather is essentially used to generate fraudulent advertising revenue.
This adware is also designed to gather various information (mostly relating to Internet browsing habits). The data usually includes private details. Developers sell this information to third parties (potentially, cyber criminals). Therefore, data tracking can lead to serious privacy issues or even identity theft.
Be aware that adware-type applications commonly misuse system resources to run unwanted processes (e.g., to mine cryptocurrency) in the background, without permission. In doing so, these potentially unwanted programs significantly reduce system performance. Therefore, we strongly advise you to eliminate all potentially unwanted programs immediately.
| Name | Ads by Check Weather |
| Threat Type | Adware, Unwanted ads, Pop-up Virus |
| Symptoms | Seeing advertisements not originating from the sites you are browsing. Intrusive pop-up ads. Decreased Internet browsing speed. |
| Distribution methods | Deceptive pop-up ads, free software installers (bundling), fake flash player installers. |
| Damage | Decreased computer performance, browser tracking - privacy issues, possible additional malware infections. |
| Malware Removal (Windows) | To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner. |
Check Weather is identical to Quiclean, History Cleaner, and Always Weather. It also shares many similarities with dozens of other adware-type applications. As with Check Weather, most also offer various useful features, but deliver no real value for regular users - claims to enable useful functionality are merely attempts to give the impression of legitimacy.
Adware-type applications such as Check Weather are designed only to generate revenue for the developers. Rather than providing the functionality promised, potentially unwanted programs pose a direct threat to your privacy and Internet browsing safety.
How did Check Weather install on my computer?
Research shows that this adware has an official download website, however, it is important to note that criminals proliferate these apps by employing a deceptive marketing method called "bundling", and the aforementioned 'malvertising' ads.
Therefore, due to careless behavior and poor knowledge of many users, potentially unwanted programs often infiltrate systems without permission. "Bundling" is stealth installation of third party programs together with regular software/apps.
Developers conceal "bundled" apps within the "Custom/Advanced" settings or other sections of the download/installation processes - they do not disclose this information adequately.
Furthermore, users often rush these processes and skip steps, and are likely to click ads without considering the possible consequences. In doing so, they expose their systems to risk of various infections.
How to avoid installation of potentially unwanted applications?
The key to computer safety is caution. Therefore, pay close attention when downloading/installing software, and browsing the Internet. As mentioned above, PUPs are distributed using the "bundling" method. Therefore, select the "Custom/Advanced" settings, carefully analyze each step of the download/installation processes, and cancel all additionally-included programs.
We strongly advise you to avoid using third party download/installation tools, since criminals monetize them by promoting dubious apps.
Note that many malicious ads appear genuine, since criminals invest a great deal of time and effort into their design, however, they redirect to gambling, survey, adult dating, pornography, and other dubious websites. If you encounter such ads, immediately eliminate all rogue applications and browser plug-ins.
IMPORTANT NOTE! Check Weather installs its Google Chrome extension as Administrator (read more here), thereby preventing removal. Therefore, before taking any further removal steps, perform these actions:
1) Open the Command Prompt by clicking the start menu button and typing "command prompt". Right click the "Command Prompt" result and select "Run as Administrator":
2) Execute the following commands:
- rd /S /Q "%WinDir%\System32\GroupPolicyUsers"
- rd /S /Q "%WinDir%\System32\GroupPolicy"
- gpupdate /force
After performing these actions, you can proceed with further removal steps for this adware.
Instant automatic malware removal:
Manual threat removal might be a lengthy and complicated process that requires advanced IT 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:
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Quick menu:
- What is Check Weather?
- STEP 1. Uninstall Check Weather application using Control Panel.
- STEP 2. Remove Check Weather adware from Internet Explorer.
- STEP 3. Remove Check Weather ads from Google Chrome.
- STEP 4. Remove 'Ads by Check Weather' from Mozilla Firefox.
- STEP 5. Remove Check Weather extension from Safari.
- STEP 6. Remove rogue plug-ins from Microsoft Edge.
Check Weather adware removal:
Windows 11 users:
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:
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:
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:
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.
In the uninstall programs window, look for "Check Weather", select this entry and click "Uninstall" or "Remove".
After uninstalling the potentially unwanted program that causes Check Weather ads, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.
Remove Check Weather adware from Internet browsers:
Video showing how to remove potentially unwanted browser add-ons:
Remove malicious add-ons from Internet Explorer:
Click the "gear" icon 
(at the top right corner of Internet Explorer), select "Manage Add-ons". Look for "Check Weather", select this entry and click "Remove".
Optional method:
If you continue to have problems with removal of the ads by check weather, 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.
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.
Windows 8 users: Open Internet Explorer and click the gear icon. Select Internet Options.
In the opened window, select the Advanced tab.
Click the Reset button.
Confirm that you wish to reset Internet Explorer settings to default by clicking the Reset button.
Remove malicious extensions from Google Chrome:
Click the Chrome menu icon 
(at the top right corner of Google Chrome), select "More tools" and click "Extensions". Locate "Check Weather", select this entry and click the trash can icon.
Optional method:
If you continue to have problems with removal of the ads by check weather, reset your Google Chrome browser settings. Click the 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.
After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.
In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.
Remove malicious plug-ins from Mozilla Firefox:
Click the Firefox menu 
(at the top right corner of the main window), select "Add-ons". Click "Extensions", in the opened window, remove "Check Weather".
Optional method:
Computer users who have problems with ads by check weather removal can reset their Mozilla Firefox settings.
Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, in the opened menu, click Help.
Select Troubleshooting Information.
In the opened window, click the Refresh Firefox button.
In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.
Remove malicious extensions from Safari:
Make sure your Safari browser is active, click Safari menu, and select Preferences....
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...
In the opened window select all history and click the Clear History button.
Remove malicious extensions from Microsoft Edge:
Click the Edge 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.
Optional method:
If you continue to have problems with removal of the ads by check weather, reset your Microsoft Edge browser settings. Click the Edge menu icon (at the top right corner of Microsoft Edge) and select Settings.
In the opened settings menu select Reset settings.
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.
- If this did not help, follow these alternative instructions explaining how to reset the Microsoft Edge browser.
Summary:
Commonly, 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.
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