# PUP.Optional.Mezza

PUP.Optional.Mezza is a type of potentially unwanted program that may install other threats when run into the computer. This is a name given by Microsoft Security Software to identify computer threat that is linked to adware or PUP. Unwanted programs are software that intends to implicate changes on the computer or browser without asking for user's approval. In this case, PUP.Optional.Mezza may install other adware, toolbars, browser redirect, and hijack the home page of affected browser.

## Threat behavior

### Installation

PUP.Optional.Mezza files and codes can be acquired by user from ranges of sources. Malicious links, spam email messages, or Peer-to-peer connection can lead to the infection. It may also be dropped onto your PC by threats like Trojans, viruses, or malware.

When PUP.Optional.Mezza is present on the computer, it will make various changes. In particular, potentially unwanted programs are targeting Internet browsers like Internet Explorer, Google Chrome, and Mozilla Firefox. Changes will be carried out by PUP.Optional.Mezza by adding add-on, extension, or plug-in. This may result to the integration of toolbar or unknown search engine.

### Symptoms

Aside from mentioned changes on the PC, PUP.Optional.Mezza also installs files and folders. It can also make registry changes to load itself during Windows start-up.

Presence of the following files confirms that computer is infected with PUP.Optional.Mezza:

• C:\Program Files\Mezaa\Mezaa.Service.exe
• C:\Program Files\Mezaa\MezaaControl.exe
• C:\Program Files\Mezaa\MezaaSvc.exe
• C:\Program Files\Mezaa\MezaaTray.exe
• C:\Program Files\Mezaa\MezaaUp.exe
• C:\Program Files\Mezaa\MLSP.exe
• C:\ProgramData\Mezaa\mezaa.log
• C:\ProgramData\Mezaa\config.mezaa
• C:\ProgramData\Mezaa\Logo.ico
• C:\Program Files\Mezaa\install.log
• C:\Program Files\Mezaa\DynLib.dll
• C:\Program Files\Mezaa\Interop.PCProxyLib.dll
• C:\Program Files\Mezaa\Mezaa.Library.dll
• C:\Program Files\Mezaa\MLSP.ini
• C:\Program Files\Mezaa\MLSP64.exe
• C:\Program Files\Mezaa\MZA.dll
• C:\Program Files\Mezaa\MZA.exe
• C:\Program Files\Mezaa\MZA64.dll
• C:\Program Files\Mezaa\Uninstall.exe

## How can you remove PUP.Optional.Mezza?

To totally remove PUP.Optional.Mezza from the computer and get rid of relevant adware, please execute the procedures as stated on this page. Make sure that you have completely scan the system with suggested malware removal tools and virus scanners.

### Windows XP, Windows Vista, and Windows 7 Instructions:

1. Open Microsoft Security Essentials by going to Windows Start > All Programs. If the tool is not yet installed on the computer, please download Microsoft Security Essentials from the link below. Save the file on your hard drive.

Complete installation guide and usage are also provided on the same link. It is essential in removing PUP.Optional.Mezza effectively. If Microsoft Security Essentials is already installed on the PC, please proceed with the steps below.

2. On Microsoft Security Essentials Home screen, please choose Full under Scan Options.

3. Click on Scan Now button to start detecting PUP.Optional.Mezza items, viruses, and malware on the PC. Scan may take a while, please be patient and wait for the process to end.

### Windows 8 Instructions:

Windows Defender is a free tool that was built help you remove PUP.Optional.Mezza, viruses, and other malicious items from Windows 8 system. Follow these procedures to scan your computer with Windows Defender:

1. Tap or click the Search charm, search for defender, and then open Windows Defender.

If Windows Defender is not yet installed on the computer, please proceed to download page using the link below. It also contains detailed instruction to install and use the program effectively. Proper usage is required to totally remove PUP.Optional.Mezza

2. On the Home tab, click Full under Scan Options. Click Scan now to start scanning for presence of PUP.Optional.Mezza. The process may take a while to complete.

3. After the scan, delete/quarantine identified threats wether it is relevant to PUP.Optional.Mezza or not. You may now restart Windows to complete the virus removal process.