Go.oclasrv.com Virus

Parasite may reinstall itself multiple times if you don't delete its core files. We recommend downloading SpyHunter to scan for malicious programs installed with it. This may save you hours and cut down your time to about 15 minutes. 

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Go.oclasrv.com is a browser hijacker – normally a harmless type of software, which cannot cause your system serious damage. However, Go.oclasrv.com Virus may eventually be seen as a source of irritating browser modifications, which may affect the way your Chrome, Firefox or Internet Explorer operate.


The Go.oclasrv.com Virus will redirect to different sites and display pop up ads and messages

For example, the hijacker may install a new search engine or a homepage and begin to redirect your searches to some potentially unwanted ads, pop-ups, banners and new tabs. Such activity can quickly drive you nuts and make you wish to remove the hijacking software. Fortunately, this is not such a complex task and you can safely uninstall Go.oclasrv.com from your system with the help of the Removal Guide below. Just continue reading and you will also learn how to protect your PC from browser hijackers in the future.

The real nature of the “browser hijackers”

Many users often think that programs like Go.oclasrv.com are some sort of viruses. Browser hijackers tend to aggressively interrupt the normal web browsing with their annoying ads, redirects, new homepage and search engine settings, and may even keep track of the users’ browsing activity. However, these activities are not enough to classify these programs as malicious. The real purpose of the browser hijackers is to simply serve as adverting tools for the online marketers. They are not developed to cause harm, and this is what distinguishes them from threats like Ransomware, Trojans, Spyware and other nasty online infections. If you have Go.oclasrv.com on your system, your files and your OS will most probably not get affected, but this will not be the case if you get attacked by Ransomware, for example. Still, you may get disturbed by the aggressive advertising methods that this software may employ. For instance, you may not want to face a wall of ads every time you open your browser. Or you may not find it safe to get redirected to various unfamiliar sites, which could be a good reason for you to wish to uninstall the hijacker. In fact, we will encourage you to do that in case that your normal browsing is seriously disturbed.

To remove Go.oclasrv.com “Malware” once it has been installed, however, the settings of the setup will not work. You will need to detect the hijacker-related files and uninstall them either with the help of some detailed removal instructions or by scanning your PC with a reputed tool. We can offer you the professional Go.oclasrv.com removal tool as an automatic solution, but if you are looking for manual instructions, the Removal guide below is at your disposal.

Where can browser hijackers usually be found and how to prevent them?

Browser hijackers are commonly encountered all over the Internet. Since they are not malicious, these programs are legally distributed via email messages, free download links, various web pages, and many more sources. You cannot get infected with them unless you willingly download and install them on your system. However, you may not always be clearly notified about their installation. Below we have listed some of the usual places where you can find programs like Go.oclasrv.com, so you can gain an idea:

  • Freeware and shareware sites – Browser hijackers and various other ad-generating programs can be found on sites that offer some free software. Torrent platforms and pages that provide free download setups could also be full of such programs.
  • Spam messages and email attachments – Many online ads, which may pop up in your browser, may contain a hijacker like Go.oclasrv.com. Most of the time, you may download such software by clicking on a spam message that promises you a better browsing experience and a free browsing tool.
  • Software bundles – The most common hijacker source is the so-called “software bundle”. This is a set of programs, (they could be apps, games, optimization tools, audio/ video tools, etc.) which you can download, install and use free of charge. Oftentimes such bundles contain ad-generating programs such as Go.oclasrv.com and promote them as “suggested software”. Users usually make these programs part of their system by installing the whole bundle as it is without paying much attention to the suggested software settings. Fortunately, this can easily be customized and with just a few clicks anyone can prevent a potentially unwanted browser hijacker from getting installed on their PC. How to perform a hijacker-free installation, you may ask? Well, it is important to apply one easy customization tip every time you download and install new software. Basically, you need to select the Advanced/ Custom/ Manual installation option and carefully unmark every pre-selected component that you think you may not need. This can save you from tons of bloatware and potentially unwanted programs, which may get installed by default if you don’t remove them manually.


Name Go.oclasrv.com
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Your browser may start to redirect you to various unamiliar sites.
Distribution Method Emails, free download links, various web pages, spam messages, torrents, free download links, software bundles. 
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.

Remove Go.oclasrv.com Virus

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


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).



We get asked this a lot, so we are putting it here: Removing parasite manually may take hours and damage your system in the process. We recommend downloading SpyHunter to see if it can detect parasite for you.

More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

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. 


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

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

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. 


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


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:


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


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:

hosts_opt (1)

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.



  • 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).


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

ie9-10_512x512  Remove Go.oclasrv.com from Internet Explorer:

Open IE, click  IE GEAR —–> Manage Add-ons.

pic 3

Find the threat —> Disable. Go to IE GEAR —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

firefox-512 Remove Go.oclasrv.com from Firefox:

Open Firefoxclick  mozilla menu  ——-> Add-ons —-> Extensions.

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove Go.oclasrv.com from Chrome:

Close Chrome. Navigate to:

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

Rename the Folder to Backup Default

Rename it to Backup Default. Restart Chrome.


To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

If you want to avoid the risk, we recommend downloading SpyHunter
a professional malware removal tool.

More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

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!

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