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What does the ct.exe file do?

The ct.exe process is also known as Windows Manager Service or, as the case may be, SmartService and is a part of Windows Management Service or, as the case may be, REOptimizer. This software is produced by Google (toolbar.google.com) or, as the case may be, SmartService. An obsolete or defective version of ct.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 ct.exe Windows Manager service

ct.exe is not a Windows system file and is known to frequently cause computer problems. Ct.exe is found in a subdirectory of "C:\Users\USERNAME". Frequently occurring are file sizes such as 689,152 bytes (30% of all these files), 851,968 bytes as well as 5 other variants.
It is the service "windowsmanagementservice".
There is no embedded description in this file. These days, this is rather unusual This process does not appear as a visible window, but only in Task Manager. The ct file is no part of Microsoft Windows. Ct.exe is capable of supervise programs. For this reason, 83% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

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 ct.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 ct?

Cool Timer 3.6 also uses "ct.exe" as the name of the executable for the program. (further information...)
Dr. T.
Ashampoo Core Tuner also uses ct.exe. Sometimes shows in Process List as ct.exe *32
Gnome

Summary: source: file.net

How to uninstall Windows Management Service or REOptimizer

To remove Windows Manager service from your computer, please follow the manual instructions below or use an automatic uninstaller product.

  1. Click the Windows Start Button. You find it in the lower left corner of the taskbar.
  2. Type the word uninstall.
  3. Click Add or remove programs.
  4. Now locate Windows Management Service or REOptimizer in the list of displayed applications.
  5. Click the program, and then click Uninstall.
Remove software in Windows 10
ct.exe Windows Manager service fix

How to tell if ct.exe (Windows Manager service) 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 Windows Manager service. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for Windows Manager service 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 ct.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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