Uc123 Removal (March 2019 Update)

Uc123 Removal (March 2019 Update)Uc123 Removal (March 2019 Update)Uc123 Removal (March 2019 Update)

This page aims to help you remove Uc123. Our removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows.

Browser hijackers can really be the worst sometimes: the annoying ads, the constant page redirects they authorize without even asking you about it, and the changes they make to your browser settings – all of this can be extremely irritating. Not to mention that it may initially come as quite the shock, especially for users, who have no idea what they’re dealing with. One of the latest programs of this type is called Uc123 and just like other software in the browser hijacker category, it can pretty much affect any of the most popular browsers, including Chrome, Firefox, Edge and others. In addition, it will also change the homepage and set a new default search engine, which on top of that you won’t even have the opportunity to change back. The only way you will be able to do that, as well as get rid of all the intrusive popups, banners, box messages and various other online advertising materials is to remove Uc123 from your system. And doing that may prove trickier than simply uninstalling just any regular program. But with the correct set of instructions like those provided in the removal guide below, you should have no difficulties at all.

What are browser hijackers and why do they have to be so annoying?

Browser hijackers are there to advertise – nothing more, nothing less. They exist with the sole purpose of generating tons of online ads and displaying them on the users’ screens. This comes in the forms of in-text links, popups, box messages, page redirects, etc. It is their primary objective to expose you to as many products, services and websites as possible, and ideally also get you to interact with those. This, in turn, is what the browser hijacker developers make money from. They, for the most part anyway, earn revenue based on the number of ads you, the user, clicked on. That is also what primarily dictates the behavior of programs like Uc123 and is the main reason behind the incredible intrusiveness of all the constant ads. But although this may sound rather benign, browser hijackers often resort to somewhat unsavory tactics to achieve their goals and be able to squeeze out as much profit from you as possible.

For example, hijacker developers often program this type of software to be able to keep track of your online browsing habits. And given that it actually integrates with your favorite browser, it’s not too difficult for them to gain access to data related to your bookmarks, favorited websites, recent search queries, etc. This information, in fact, supplies programs like Uc123 with the necessary perspective of what your interests are. It basically tells them what type of products, services and websites you will be more likely to interact with and be attracted to. Some users actually begin to notice this and will see things like a popup or a banner that is oddly displaying the exact type of content they we looking up online the other day. That’s exactly how this works.

Uc123 Removal

If you are a Windows user, continue with the guide below.

If you are a Mac user, please use our How to remove Ads on Mac guide.

If you are an Android user, please use our Android Malware Removal guide.

Uc123 Removal (March 2019 Update)

Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).

Uc123 Removal (March 2019 Update)


Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab (the “Details” Tab on Win 8 and 10). Try to determine which processes are dangerous. 

Uc123 Removal (March 2019 Update)

Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

Uc123 Removal (March 2019 Update)
Drag and Drop Files Here to Scan
Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at: https://howtoremove.guide/online-virus-scanner/

Scan Results

Virus Scanner Result
Uc123 Removal (March 2019 Update)ClamAV
Uc123 Removal (March 2019 Update)AVG AV
Uc123 Removal (March 2019 Update)Maldet

After you open their folder, end the processes that are infected, then delete their folders. 

Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections. 

Uc123 Removal (March 2019 Update)

Hold together the Start Key and R. Type appwiz.cpl –> OK.

Uc123 Removal (March 2019 Update)

You are now in the Control Panel. Look for suspicious entries. Uninstall it/them.

Type msconfig in the search field and hit enter. A window will pop-up:

Uc123 Removal (March 2019 Update)

Startup —> Uncheck entries that have “Unknown” as Manufacturer or otherwise look suspicious.

Uc123 Removal (March 2019 Update)

Hold the Start Key and R –  copy + paste the following and click OK:

notepad %windir%/system32/Drivers/etc/hosts

A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

Uc123 Removal (March 2019 Update)

If there are suspicious IPs below “Localhost” – write to us in the comments.

Open the start menu and search for Network Connections (On Windows 10 you just write it after clicking the Windows button), press enter.

  1. Right-click on the Network Adapter you are using —> Properties —> Internet Protocol Version 4 (ICP/IP), click  Properties.
  2. The DNS line should be set to Obtain DNS server automatically. If it is not, set it yourself.
  3. Click on Advanced —> the DNS tab. Remove everything here (if there is something) —> OK.

Uc123 Removal (March 2019 Update)

Uc123 Removal (March 2019 Update)

  • After you complete this step, the threat will be gone from your browsers. Finish the next step as well or it may reappear on a system reboot.

Right click on the browser’s shortcut —> Properties.

NOTE: We are showing Google Chrome, but you can do this for Firefox and IE (or Edge).

Uc123 Removal (March 2019 Update)

Properties —–> Shortcut. In Target, remove everything after .exe.

Uc123 Removal (March 2019 Update)

Uc123 Removal (March 2019 Update)  Remove Uc123 from Internet Explorer:

Open IE, click  Uc123 Removal (March 2019 Update) —–> Manage Add-ons.

Uc123 Removal (March 2019 Update)

Find the threat —> Disable. Go to Uc123 Removal (March 2019 Update) —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

Uc123 Removal (March 2019 Update) Remove Uc123 from Firefox:

Open Firefoxclick  Uc123 Removal (March 2019 Update)  ——-> Add-ons —-> Extensions.

Uc123 Removal (March 2019 Update)

Find the adware/malware —> Remove.
Uc123 Removal (March 2019 Update)Remove Uc123 from Chrome:

Close Chrome. Navigate to:

 C:/Users/!!!!USER NAME!!!!/AppData/Local/Google/Chrome/User Data. There is a Folder called “Default” inside:

Uc123 Removal (March 2019 Update)

Rename it to Backup Default. Restart Chrome.

Uc123 Removal (March 2019 Update)

Type Regedit in the windows search field and press Enter.

Inside, press CTRL and F together and type the threat’s Name. Right click and delete any entries you find with a similar name. If they don’t show up this way, go manually to these directories and delete/uninstall them:

  • HKEY_CURRENT_USER—-Software—–Random Directory. It could be any one of them – ask us if you can’t discern which ones are malicious.
    HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
    HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random


And if you think that’s unpleasant, there can potentially be far more serious consequences to having a browser hijackers like Uc123 installed on your PC. Now, many people make the mistake of thinking that they’ve been infected by a virus of malware of some type, when really it’s a hijacker. Luckily, that’s not that case and hijackers are not considered dangerous or harmful, the same way that Trojans or ransomware viruses are, for example. But they can, nevertheless, lead to you getting infected by something malicious of that caliber. For example, it can be as a result of the constant page redirects that you need to suffer through, which may potentially lead you to an infected web location.

The bottom line is that you’re better off without Uc123 than you are with it. So, feel free to use the below guide to have it removed. And be sure to take better care of your browsing habits from now on, so as to avoid landing another browser hijacker in the future. Most particularly, mind your download sources. Be sure to only use reliable and trustworthy websites. And once you’ve downloaded some new program, be sure to always manually customize the setup, so you can prevent any hidden added software from getting installed as well.


Name Uc123
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms A changed browser appearance, including a new browser homepage, default search engine and new toolbar.
Distribution Method Mainly thanks to program bundles and file-sharing platforms.
Detection Tool

Keep in mind, SpyHunter’s malware detection tool is free. To remove the infection, you’ll need to purchase the full version. More information about SpyHunter and steps to uninstall.

If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!


About the author


Violet George

Violet is an active writer with a passion for all things cyber security. She enjoys helping victims of computer virus infections remove them and successfully deal with the aftermath of the attacks. But most importantly, Violet makes it her priority to spend time educating people on privacy issues and maintaining the safety of their computers. It is her firm belief that by spreading this information, she can empower web users to effectively protect their personal data and their devices from hackers and cybercriminals.

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