What is Opera Stable?

If you have suddenly found a new program called and you are wondering what is opera Stable? What is Opera stable doing on your PC, how it got there and what exactly does it do.

What is Opera stable?

The Opera browser is a perfectly legitimate internet browser developed by a company named OperaSoftware ASA and Opera Stable is the latest stable release of this browser. There is nothing malicious with the Opera browser. However the installation of Opera stable you have on your computer may or may not be legitimate.

What is Opera Stable?

The Opera Stable process

Opera is less popular than its three major competitors in the browser scene – Chrome, Mozilla and Internet Explorer. To counteract that, Opera is often distributed as part of software bundles, through 3rd party programs and this leaves room for abuse from unscrupolous hackers.

The fact that Opera stable was installed without your explicit permission or knowledge is worrying enough to raise the question what is Opera stable. It could be the real thing, or it could be an injected, modified .exe of the original program that works as a rootkit giving access to other, more dangerous viruses. It is also very likely that other programs were installed alongside Opera stable – likely Adware or Spyware.

Regardless of the cause you should probably remove it

The thing with these randomly acquired programs is that you never know where the catch is until it is too late. If you want to test if the Opera browser is to your liking you should delete this copy and download the program from the official program developer. This way you will know for certain that the executable has not been tampered with.

If you have already tried to use the copy of Opera stable that is on your computer and you received search results from strange search engines then you should immediately remove it. (Opera default is Google, everything else means it’s a fake). It is also possible that you are subjected to a much larger then normal amount of Advertisements while you browse – again this means you are running an Adware program designed to look as Opera. It is even possible that Opera stable is just a virus masquarading under the name of known and trusted software.

  • If you already tried to remove Opera stable through the control panel and it didn’t work or parts of it still remain then you are absolutely dealing with a virus. You will find the instructions how to remove the virus further below.
  • In conclusion we’d like to say it is hard to determine what is Opera stable for sure until we test the particular sample that you have installed on your machine. The most prudent course of action is to remove it immediately and then re-download it from the official Opera site if you are curious and looking for a browser alternative.
  • Finally try to remember what caused Opera stable to appear in your computer. The most likely culprit is probably a program you have recently installed and that program is possibly infected with a virus. After you deal with Opera browser you will have to adress the program that installed it as well. Keep on reading.

NOTE: The following guide should be exhaustive enough to cover all aspects of whatever virus or adware has infected you. 


Name Opera Stable
Type Potentially Unwanted malware. 
Danger Level Medium.
Symptoms Unwanted Ads and Toolbars, search engine redirects.
Distribution Method Software bundles, Email attachments, online Ads, infected torrent files.
Detection Tool

Remove Opera Stable Virus

To try and remove Opera Stable quickly you can try this:

  1. Go to your browser’s settings and select More Tools (or Add-ons, depending on your browser).
  2. Then click on the Extensions tab.
  3. Look for the Opera Stable extension (as well as any other unfamiliar ones).
  4. Remove Opera Stable by clicking on the Thrash Bin icon next to its name.
  5. Confirm and get rid of Opera Stable and any other suspicious items.

If this does not work as described please follow our more detailed Opera Stable removal guide below.

If you have a Windows virus, continue with the guide below.

If you have a Mac virus, please use our How to remove Ads on Mac guide.

If you have an Android virus, please use our Android Malware Removal guide.

If you have an iPhone virus, please use our iPhone Virus Removal guide

What is Opera Stable?

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).

What is Opera Stable?


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. 

What is Opera Stable?

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

What is Opera Stable?
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
What is Opera Stable?ClamAV
What is Opera Stable?AVG AV
What is Opera Stable?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. 

What is Opera Stable?

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

What is Opera Stable?

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:

What is Opera Stable?

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

What is Opera Stable?

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:

What is Opera Stable?

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.

What is Opera Stable?

What is Opera Stable?

  • 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).

What is Opera Stable?

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

What is Opera Stable?

What is Opera Stable?  Remove Opera Stable from Internet Explorer:

Open IE, click  What is Opera Stable? —–> Manage Add-ons.

What is Opera Stable?

Find the threat —> Disable. Go to What is Opera Stable? —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

What is Opera Stable? Remove Opera Stable from Firefox:

Open Firefoxclick  What is Opera Stable?  ——-> Add-ons —-> Extensions.

What is Opera Stable?

Find the adware/malware —> Remove.
What is Opera Stable?Remove Opera Stable from Chrome:

Close Chrome. Navigate to:

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

What is Opera Stable?

Rename it to Backup Default. Restart Chrome.

What is Opera Stable?

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

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


Nathan Bookshire

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