How to Remove PUP.Optional.Cassiopessa Completely?

About PUP.Optional.Cassiopessa

Do you have seen PUP.Optional.Cassiopessa? Most of users may feel it strange, but it is possible for them to have it on their pc for months. Besides, the system may have already faced some issues which they may not pay enough attentions until something bad happened and can’t be rescued. In this case, PUP.Optional.Cassiopessa is a Trojan and it is able to destroy your PC and worsen the condition of your PC.

PUP.Optional.Cassiopessa can carry on fraud when it enters your PC. It will camouflage like a password generator and afterward it shuts the documents or information of users so as to make it difficult for users to open it. Then, when users are eager to open these items, PUP.Optional.Cassiopessa gives administrations to open them and ask the payment of a few hundred dollars. Indeed, you may not take it as a big fortune, but you will be angry about its cheating.

In this case, by what means would you be able to detect of PUP.Optional.Cassiopessa on your PC before you are falling into such traps? you can judge it from the practices of your working system. when it is infected, your operation will be slowed down and errors like system halted or so. happened frequently. And then, you should be suspicious that your PC is invaded by Trojan.

If you are worried about your PC right now, we suggest you to take a general check-up first, and then if are infected, please follow the instructions here to get PUP.Optional.Cassiopessa deleted.

Severe Problems Caused by PUP.Optional.Cassiopessa Virus

  • 1. It can bring your PC more viruses and malware
  • 2. It also display spam popups to cheat you buy useless products or services
  • 3. It can create a bunch of commercial ads on every webpage you are browsing.
  • 4. It can be installed on your computer slightly.
  • 5. It can alters regsitry files to mess up entire system
  • 6. It may gather your sensitive information you input online with tracking codes
  • 7. It is also used to help cyber criminal infiltrate your system remotely

PUP.Optional.Cassiopessa Removal Instructions

(Windows OS) Plan A – Get Rid of PUP.Optional.Cassiopessa with Manually (Only For PC Experts with Top Techniques)

(Windows OS) Plan B – Delete PUP.Optional.Cassiopessa Automatically from Windows PC (Easy and Safe For All PC Users)

(Mac OS) Plan C – Remove PUP.Optional.Cassiopessa Automatically from Mac OS Computer (Easy and Safe For All Mac OS Users)

(Windows OS) Plan A – Get Rid of PUP.Optional.Cassiopessa with Manual Solution

For the safety of your computer, before you start the PUP.Optional.Cassiopessa manual removal, please confirm the following things: 1. You have rich experience for removing virus and malware manually; 2. Your PC techniques reach the level of PC experts; 3. You are very familiar with Registry and clearly know that what severe consequence may occur for your mistake; 4. You are able to reverse the wrong operations during PUP.Optional.Cassiopessa manual removal. If you do not fulfill the above conditions, Plan A will be risky option for you. Our tech team strongly suggested you to choose Plan B which helps you detect and remove PUP.Optional.Cassiopessa safely and easily with SpyHunter and RegHunter.

Step 1 – Uninstall PUP.Optional.Cassiopessa and all malware from Control Panel.

1. Press “Windows key + R key” together to open Run window:

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2. Input “control panel” in Run window and hit Enter key to open Control Panel:

3. Click Uninstall a program:

PUP.Optional.Cassiopessa complete removal

4. Right-click PUP.Optional.Cassiopessa or other unwanted programs and click Uninstall:

Step 2 – Remove PUP.Optional.Cassiopessa from Chrome, Firefox, IE and Microsoft Edge.

On Chrome: Launch up Google Chrome> click Chrome menu > click Tools> click Extension> select PUP.Optional.Cassiopessa and unwanted extensions> click trash bin

get rid of PUP.Optional.Cassiopessa from chrome

On Firefox: Open Firefox, navigate to browser menu in the top right > select Add-ons > select PUP.Optional.Cassiopessa and unwanted extensions and add-ons > remove it with Disable or Remove button.

delete PUP.Optional.Cassiopessa from firefox

On IE: Open Internet Explorer >click Tools > click Manager Add-on Tools and Extensions> select PUP.Optional.Cassiopessa and unwanted extensions and add-ons > click Remove or Disable button.

get rid of PUP.Optional.Cassiopessa on IE

On Microsoft Edge: (Reset default homepage and search engine to remove PUP.Optional.Cassiopessa associated hijacker)

Reset Edge homepage: Click More (…) > click Settings > select A specific page or pages under “Open with” > select Custom to type your favorite website.

get rid of PUP.Optional.Cassiopessa from Edge

Reset Edge homepage: Click More (…) > click Settings > Click View advanced settings > Click <Add new> under “Search in the address bar with”> type your favorite search engine >click Add as default.

Step 3 – Delete malicious files of PUP.Optional.Cassiopessa from Registry.

1. Press “Windows key + R key” together to open Run window:

2. Input “regedit” in Run window and hit Enter key to open Registry:

PUP.Optional.Cassiopessa easy removal tool

3. Locate and remove registry files created by PUP.Optional.Cassiopessa and other threats as below:

HKEY_CURRENT_USER\software\Microsoft\Internet Explorer\Main\Start Page Redirect=”http://<random>.com”
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\virus name
HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Winlogon “Shell” = “%AppData%\<PUP.Optional.Cassiopessa>.exe”
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run ‘Random’ HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Random

Plan B – Delete PUP.Optional.Cassiopessa with Infections Quick Removal Tool

Part One – Delete PUP.Optional.Cassiopessa Automatically from Windows PC

Step 1 – Start a scan with SpyHunter to remove PUP.Optional.Cassiopessa completely.

1. Click download button below to safely Download SpyHunter :


After SpyHunter is downloaded, your Chrome /Firefox /IE may display such fake security warning This type of file can harm your computer. Do you want to keep Download_Spyhunter-Installer.exe anyway?”, which is generated by virus to cheat you, please just ignore the fake warning and click “Keep” button.

Note: SpyHunter`s free version will help you detect malicious items on your system for free. Based on the scan results it provides, you can choose to manually locate and remove the threats by yourself if you are computer specialist; And you can choose to let SpyHunter help you automatically remove the virus by purchasing its full version license. FYI, the full version of SpyHunter will offers you unlimited one-on-one professional help for any malware related issue by its official PC expert. If you no longer keep SpyHunter on your computer, follow these steps to uninstall it.

2. Run SpyHunter-Installer.exe to install SpyHunter via its installer:

how do i remove PUP.Optional.Cassiopessa quickly

3. Once the installation finishes, please click Start New Scan to search and remove PUP.Optional.Cassiopessa and hiding threats.

4. Click Fix Threats to remove PUP.Optional.Cassiopessa and other viruses completely.


Step 2 – Maximize performance of your PC with RegHunter.

1. Click download button below to Download RegHunter:

Note: If you no longer want to keep RegHunter on your computer, follow these steps to uninstall it. RegHunter`s free version provides unlimited free scans and detection. After it detects corrupted registry files and system errors files, you can follow the scan results to manually replace them with healthy files copied from healthy PC on your own; or to purchase its full version to automatically fix the Registry and errors with ease. Meanwhile, the full version of RegHunter will offers you great features to optimize your system performance.


2. Run RegHunter-Installer.exe to install RegHunter via its installer:

3. Once the installation finishes, please click Scan for Registry Errors Now! to search damaged registry files and system errors caused by PUP.Optional.Cassiopessa:

4. Once the scan finishes, please click Repair All Errors to fix Registry corrupted by PUP.Optional.Cassiopessa and optimize system to make it run as a new system:

how do i delete PUP.Optional.Cassiopessa completely


Step 3 (Optional) – Re-scan your computer with 100% Free Avast Internet Security:

In case the PUP.Optional.Cassiopessa virus still stays on your computer, please use free version of Avast Internet Security to scan your entire system and remove all detected threats. It can provides overall protection to your computer and secure your online activities and secure your privacy. Now download Avast Internet Security with 60 days free trail here:


Part Two – Remove PUP.Optional.Cassiopessa Automatically from Mac OS Computer (Easy For All Mac OS Users)

In case your system has been attacked by PUP.Optional.Cassiopessa and other infections, MacKeeper will be the easiest and fastest way to clean up them and cure your Mac.Mackeeper is a reliable and powerful Mac protection and optimization software which helps you keep your Mac clean, fast and safe. Mackeeper is one of the best Mac OS security software designed to offer Mac users with best experience. Mackeeper has received great reputations from its users and it is winning trust from more and more users. As a 16 in 1 application is the most advanced way to care for your Mac. It is worth to get it. Follow steps below to delete the threats now:

1. Download and Install MacKeeper by clicking the image below:

2. Once MacKeeper is installed, use the Find & Fix feature to check the status of your Mac and remove all infections and fix all problems:

PUP.Optional.Cassiopessa quick removal tool

3. If the Find & Fix did not solve all issues, you can use the Geek on Demand feature to get a Apple expert to help you as an personal assistant. The Apple Certified Support Professional expert will provide solutions for any technical problem, whether a minor nuisance or a catastrophic failure.

get rid of PUP.Optional.Cassiopessa safely


Mackeeper is a package of 16 applications, you can get almost all necessary tools for your Mac and everything will become easy and convenient on your machine. Here are some powerful tools packed in MacKeeper:

Internet Security – Protect your Mac from identity theft fraud (phishing), malware, spyware, adware, viruses and identity theft while using the Internet.

delete PUP.Optional.Cassiopessa

Files Recovery – Deleting files does not necessarily mean losing them forever. Now you can recover even after they are deleted from the trash.

PUP.Optional.Cassiopessa removal help

Files Finder – Search and quickly find any lost or misplaced file, even without knowing what folder is.

remove PUP.Optional.Cassiopessa

Disk Usage – Look at the size of the folders on your hard drive to see at a glance which folders take up more space.

delete PUP.Optional.Cassiopessa in mac

Anti-theft – If you steal your Mac, theft continues its location and even makes a snapshot of the thief with iSight.




Warm Reminder – Something You Should Know After Removing PUP.Optional.Cassiopessa

To avoid PUP.Optional.Cassiopessa coming back and prevent attacks from other infections, follow these basic rules while using your computer:

– You should always choose Custom Installation no matter what software you are going to install;

– Uncheck hidden options which attempt to install additional programs you never need;

– Scan all downloaded attachments of email before you open them;

– Never open any attachments of unknown or spam emails;

– Do not visit adult / porn websites;

– Do not update any app from nonofficial websites.