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Should I remove a-squared Free?

What percent of users and experts removed it?
8% remove it92% keep it
Overall Sentiment
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How common is it?
Global Rank #30,219
United States Rank #32,974
Reach 0.0047%


4.5 100.00%

a-squared Free 4.5


a-squared Free 4.5 is a program developed by Emsisoft GmbH. It adds a background controller service that is set to automatically run. Delaying the start of this service is possible through the service manager. The main program executable is a2free.exe. The software installer includes 16 files and is usually about 146.55 MB (153,663,975 bytes). a2update.dll is the automatic update component of the software designed to download and apply new updates should new versions be released. In comparison to the total number of users, most PCs are running the OS Windows 7 (SP1) as well as Windows 10. While about 34% of users of a-squared Free come from the United States, it is also popular in Germany and France.

Program detailsProgram details

URL: www.emsisoft.com
Help link: forum.emsisoft.com
Installation folder: C:\Program Files\a-squared Free\
Uninstaller: "C:\Program Files\a-squared Free\unins000.exe"
Estimated size: 146.55 MB

Program filesFiles installed by a-squared Free 4.5

Program executable:a2free.exe
Name:a-squared Free
Path:C:\Program Files\a-squared free\a2free.exe
Additional files:
  • a2cmd.exe (by Emsi Software GmbH) - Emsisoft Anti-Malware (Command Line Scanner)
  • a2framework.dll (by Emsi Software GmbH) - Framework Module
  • a2mor.dll - Emsisoft Anti-Malware move file on reboot library
  • a2update.dll - Updater Module
  • engine.dll - Engine SDK
  • a2freecontmenu.dll - a-squared Free (a-squared Free shell extension)
  • a2freecontmenu64.dll
  • blitzblank.exe - BlitzBlank
  • a2service.exe - a-squared (a-squared Service)
  • a2upd.exe - a-squared replacement tool
  • t3.dll (by IKARUS Security Software) - T3 (T3 Extended Virus Engine (EVE))
  • unins000.exe - Setup/Uninstall

Program behaviorsBehaviors exhibited

  • a2service.exe runs as a service named 'a-squared Free Service' (a2free) "Scans the PC for unwanted software and provides protection from malicious code".

How do I remove a-squared Free?

You can uninstall a-squared Free from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8/10: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program a-squared Free 4.5, click it, and then do one of the following:
    • Windows Vista/7/8/10: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove a-squared Free.

Win 7 (SP1) 48%
Win XP 1%
Windows Service? Yes
(Installs a service)
Uninstall it 8%
Keep it 92%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 52.69%
Windows 10 24.73%
Windows Vista 16.13%
Windows XP 6.45%
Which OS releases does it run on?
Windows 7 Home Premium 32.61%
Windows Vista Home Premiu... 14.13%
Windows 7 Ultimate 9.78%
Windows 7 Professional 8.70%
Windows 8.1 8.70%
Windows 10 Pro 7.61%

Distribution by countryGeography

33.96% of installs come from the United States
Which countries install it?
  United States 33.96%
  Germany 22.64%
  France 14.15%
  Italy 6.60%
  United Kingdom 3.77%
  Canada 2.83%
  Belgium 1.89%
  Netherlands 1.89%
  Austria 0.94%
  Switzerland 0.94%
  Czech Republic 0.94%
  Spain 0.94%
  Finland 0.94%
  Croatia 0.94%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Dell 24.59%
Hewlett-Packard 24.59%
Acer 22.95%
ASUS 18.03%
Toshiba 3.28%
Gateway 1.64%
American Megatrends 1.64%
Common models
HP Pavilion dv9500 Notebo... 3.90%
ASUS All Series 2.60%
Dell Inspiron 530 2.60%
MSI MS-7817 2.60%
HP Pavilion dv7 Notebook ... 2.60%
Viglen VIG580S 1.30%


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