What does the DefMgr.exe file do?
The DefMgr.exe process is also known as Microsoft Default Manager and is a part of Default Manager. This software is produced by Microsoft (www.microsoft.com). An obsolete or defective version of DefMgr.exe can cause problems for your computer that can range from slowness to error messages such as these:
- Microsoft Default Manager has stopped working. Windows is checking for a solution to the problem... (Windows 10, 8, 7)
- Microsoft Default Manager has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available. (Windows 10, 8, 7)
- DefMgr.exe has encountered a problem and needs to close.
- Access violation at address FFFFFFFF in module DefMgr.exe. Read of address 00000000.
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What you should know about DefMgr.exe Microsoft Default Manager
DefMgr.exe is not part of Windows, but it is important nonetheless. DefMgr.exe is found in a subdirectory of "C:\Program Files".
Frequently occurring are file sizes such as 288,080 bytes (42% of all these files), 439,568 bytes, 288,088 bytes or, as the case may be, 250,192 bytes.
The application has a visible window, and can be closed by clicking the red X button.. The application is initiated as part of Windows start-up (Registry: MACHINE\Run). The original file has been signed by a trusted signature authority. This lets you check your copy to see if it is a counterfeit. To remove the file and its related software from your computer, click Programs in Control Panel It was developed by a so-called third party provider - and not by Microsoft. For this reason, 3% 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 DefMgr.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 DefMgr?
The file spreads very slowly and does not often make an appearance. Therefore, feedback from other users is not yet available.
Summary: source: file.net
How to uninstall Default Manager
To remove Microsoft Default Manager from your computer, please follow the manual instructions below or use an automatic uninstaller product.
- Click the Windows Start Button. You find it in the lower left corner of the taskbar.
- Type the word uninstall.
- Click Add or remove programs.
- Now locate Default Manager in the list of displayed applications.
- Click the program, and then click Uninstall.
How to tell if DefMgr.exe (Microsoft Default Manager) 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 Microsoft Default Manager. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for Microsoft Default Manager 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 DefMgr.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.