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What is the msxml4.dll component needed for?

Simply stated, a DLL file is an unnamed executable file. It cannot be directly invoked, but it can be called by any executable Windows program.

The msxml4.dll process is also known as MSXML 4.0 (Version SP 2) and is a part of Microsoft® MSXML (Version 4.0 SP 2). This software is produced by Microsoft (www.microsoft.com). An obsolete or defective version of msxml4.dll 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 msxml4.dll MSXML 4.0

msxml4.dll is not a Windows system file and is known to frequently cause computer problems. Msxml4.dll is found in the C:\Windows\System32 directory. The file size is 1,348,432 bytes.
This so-called dynamic link library (DLL) contains all the functions that have been transferred to a separate file. These transferred functions are available not only to this particular program, but can also be used by other applications. To remove the file and its related software from your computer, click Programs in Control Panel It also can also affect other applications by changing their properties. Such manipulation can cause an application to do things other than what it is intended to do. This particular software does not appear as a visible window, but only in Task Manager. The original file has been signed by a trusted signature authority. This lets you check your copy to see if it is a counterfeit. The service has no characteristics or description of its own. This is unusual. It was developed by a so-called third party provider - and not by Microsoft. For this reason, 46% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

A msxml4.dll file has a 73% certainty of being dangerous if it is found in a subdirectory of C:\Windows. In this case, the file size is usually 1,348,432 bytes (75% of all these files) or, as the case may be, 1,286,152 bytes. This process does not appear as a visible window, but only in Task Manager. The file has a digital signature. This confirms that the producer has been registered with a certificate authority. The service has no characteristics or description of its own. This is unusual. The file does not come from Microsoft and is not part of the operating system.

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 msxml4.dll. 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 msxml4?

Seems to be related PC Tools Performance Toolkit
this .dll is a part of a control setup that allows stabalizing of data flow control
It is shown to be malware by the 'Certified Toolbar Removal Tool'

Summary: One user judges msxml4.dll to be an essential file that should not be touched. However, one user considers this to be a suspicious process and would like to get rid of it. For this reason, one user has already deleted msxml4.dll. source: file.net

How to uninstall Microsoft® MSXML

msxml4.dll MSXML 4.0 fix

To remove MSXML 4.0 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 Microsoft® MSXML in the list of available programs.
  5. Click Uninstall.

How to tell if msxml4.dll (MSXML 4.0) 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 MSXML 4.0. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for MSXML 4.0 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 msxml4.dll 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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