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What does the BttnServ.exe file do?

The BttnServ.exe process is also known as Button Server or, as the case may be, Image Compiler and is a part of Easy Access Button Support or, as the case may be, BttnServ Module. This software is produced by Compaq Computer (www.compaq.com) or, as the case may be, Ahead Software AG (www.nero.com). An obsolete or defective version of BttnServ.exe can cause problems for your computer that can range from slowness to error messages such as these:

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What you should know about BttnServ.exe Button Server

BttnServ.exe is not part of Windows, but it is important nonetheless. BttnServ.exe is found in a subdirectory of "C:\Program Files" - e.g. C:\Program Files\compaq\easy access button support\. Frequently occurring are file sizes such as 122,880 bytes (85% of all these files) or, as the case may be, 106,496 bytes.
This BttnServ program does not have a visible window, and does not appear on the taskbar. The file was developed by a so-called third party provider - and not by Microsoft. For this reason, 42% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

A BttnServ.exe file has a 22% certainty of being dangerous if it is found in the C:\Windows\System32 directory. In this case, the file size is usually 65,536 bytes. The application has a visible window, and can be closed by clicking the red X button.. When Windows starts, this process is automatically started at the same time (Registry: MACHINE\Run). The BttnServ file is not part of the Windows operating system. BttnServ.exe appears to be a file that was compressed by an EXE-Packer. This technique is often used by trojans to keep the file size small and also hamper debugging efforts. However, this in itself is not sufficient reason to presume malicious intent, since even well-intentioned, professional software producers take advantage of compressed files.

If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves BttnServ.exe. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.

What do other computer users say about BttnServ?

fix it
Jamie Thompson
I cannot kill this process! Even Process Explorer(from www.sysinternals.com) could not kill it. I cannot delete the file. The key combination "Ctrl-Alt-Delete" is no longer recognised! Hence, I can no longer lock my workstation or logon to a Windows!!!
Anand Shekhar
Compaq Easy Access Button Driver
bttnserv.exe provides support for Compaq EasyAccess buttons on their range of multimedia keyboards. Without this service, the additional buttons will cease to function. This is a non-essential process. Disabling or enabling this is down to user preference

Summary: 3 users judge BttnServ.exe to be an essential file that should not be touched. source: file.net

How to uninstall Easy Access Button Support or BttnServ Module

BttnServ.exe Button Server fix

To remove Button Server from your computer, please follow the manual instructions below or use an automatic uninstaller product.

  1. Click the Windows Start Button. In Windows 8, look for Control Panel.
  2. Click Control Panel.
  3. Click Uninstall a program.
  4. Look for Easy Access Button Support or BttnServ Module in the list of available programs.
  5. Click Uninstall.

How to tell if BttnServ.exe (Button Server) was uninstalled cleanly

After uninstalling, restart your computer. Then start Windows Explorer and see if there is still a folder with the name of the software under C:\Program Files. Be sure to check the Registry as well for remnants of Button Server. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for Button Server or the name of the producer. Always keep in mind that only a computer professional should ever directly delete entries in the Windows Registry.

What to do if a program does not uninstall

The easiest way to remove any kind of software cleanly and accurately is to use an uninstaller tool. Because the uninstaller automatically creates a backup, there is no risk of anything going wrong.

Last but not least

If Windows not working quite right for you, or if startup is taking a long time, or BttnServ.exe is causing problems for you, a good Windows diagnostic tool may very well help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.

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