74,139,804 programs installed

Should I remove Column Break Workbook?

What percent of users and experts removed it?
78% remove it22% keep it
Overall Sentiment
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How common is it?
Reach 0.0002%


VersionDistribution 100.00%

Column Break Workbook

What is Column Break Workbook?

This is a WinCheck/CMI (variant) adware/browser hijacker variant that injects code into the user's web browser (IE, Chrome and Firefox). It is known as an ad-injector, a malicious process that once inside the web browser will hijack existing advertisements of underlying web sites (not associated with the website itself). It will also inject new ads in white space on the site or images that have standard banner sizes. These ads are typically for promoting shopping discount coupons, ads for PC optimizers or bundled PUP offers, or malvertising since it runs on sketchy ad networks.This runs as a startup process called WinCheck in the user's startup registry (Run key) and will execute each time the computer is restarted and the user logs in.

How do you know if you are infected? First, if you have this program installed then this adware is most likely still running. Next, you see ads in the browser that say something like "Ads by WinCheck".


The main program executable is ansm471b.exe. Typically most users end up uninstalling this just after a few days. The software installer includes 4 files and is usually about 2.12 MB (2,222,895 bytes).
  • Possible malware installed by this program
  • Displays unwanted advertisements
  • The experts agree, you should remove it!
Warning, multiple anti-virus scanners have detected possible malware in Column Break Workbook.
ansm471b.exe (e6784f97fa930208eb16b66fe9a913a7) has been flagged by the following 9 scanners:
Anti-Virus softwareVersionDetection
Lavasoft Ad-Aware 537 Application.Generic.1270347
avast! 2014.9-150816 Win32:Dropper-gen [Drp]
Baidu-International Adware.Win32.ConvertAd.IZ
Bitdefender Application.Generic.1270347
ESET-NOD32 9.11626 a variant of Win32/Adware.ConvertAd.IZ
F-Secure 11.2015-16-08_1 Application.Generic.1270347
G Data 15.8.25 Application.Generic.1270347
McAfee-GW-Edition 7.6671 BehavesLike.Win32.CryptDoma.th
MicroWorld-eScan Application.Generic.1270347

Program detailsProgram details

Installation folder: C:\users\user\appdata\local\272c9dcc-1429893337-11e3-8513-448a5b9b600d
Uninstaller: "C:\users\user\appdata\Local\272C9DCC-1429893337-11E3-8513-448A5B9B600D\uninstall.exe"
Estimated size: 2.12 MB

Program filesFiles installed by Column Break Workbook

Program executable:ansm471b.exe (Malware detected)
Additional files:
  • rnsn49DC.exe
  • Uninstall.exe
  • rnspE0B2.exe

How do I remove Column Break Workbook?

Quickly and completely remove Column Break Workbook from your computer by downloading "Should I Remove It?", its 100% FREE and installs in seconds (click the button below).
Download "Should I Remove It?", it's FREE!Remove Column Break Workbook from your computer.
Or, you can uninstall Column Break Workbook 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: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program Column Break Workbook, click it, and then do one of the following:
    • Windows Vista/7/8: 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 Column Break Workbook.
  4. If for some reason uninstallation fails, please install Microsoft's uninstall fixer utility which will help fix problems with programs that can't be uninstalled at support.microsoft.com.
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Win 8 67%
Win 7 (SP1) 33%
Uninstall it 78%
Keep it 22%
United States

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 8 66.67%
Windows 7 33.33%
Which OS releases does it run on?
Windows 8.1 66.67%
Windows 7 Home Premium 33.33%

Distribution by countryGeography

87.50% of installs come from the United States
Which countries install it?
  United States 87.50%
  DK 12.50%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Toshiba 33.33%
Dell 33.33%
Acer 33.33%
Common models
TOSHIBA Satellite P875 33.33%
Dell Studio 1537 33.33%
Acer Aspire TC-605 33.33%


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