What does the mcdatrep.exe file do?
The mcdatrep.exe process is also known as Dat built in test and is a part of McAfee DAT built in test. This software is produced by McAfee (www.mcafee.com). An outdated or faulty version of mcdatrep.exe can cause problems for your computer, ranging from slowness to error messages like these:
- Dat built in test has stopped working. Windows is checking for a solution to the problem... (Windows 11, 10, 7)
- Dat built in test 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 11, 10, 7)
- mcdatrep.exe has encountered a problem and needs to close.
- Access violation at address FFFFFFFF in module mcdatrep.exe. Read of address 00000000.
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What you should know about mcdatrep.exe Dat built in test
mcdatrep.exe is not part of Windows, but it is important nonetheless. Mcdatrep.exe is found in a subdirectory of "C:\Program Files\Public Documents".
Frequently occurring are file sizes such as 1,889,696 bytes (50% of all these files), 1,752,216 bytes or, as the case may be, 1,751,192 bytes.
It has a digital signature. This confirms that the producer has been registered with a certificate authority. The application does not have a visible window, and does not appear on the taskbar. The mcdatrep file is not part of the Windows operating system.
Mcdatrep.exe is capable of monitor other applications.
For this reason, 5% 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 mcdatrep.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 mcdatrep?
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 McAfee DAT built in test
To remove Dat built in test from your computer, please follow the manual instructions below.
- Click the Windows Start Button. You can find it in the lower-left corner of the taskbar.
- Type 'uninstall'.
- Click Add or remove programs.
- Now locate McAfee DAT built in test in the list of displayed applications.
- Click the program, and then click Uninstall.


How to check if mcdatrep.exe (Dat built in test) was uninstalled completely
After uninstalling, restart your computer. Then open Windows Explorer and check if a folder with the software name still exists under C:\Program Files. Also, check the Registry for remnants of Dat built in test. To do this, start Regedit, then look under HKEY_LOCAL_MACHINE > Software for: Dat built in test or the name of the producer. Keep in mind that only a computer professional should delete entries in the Windows Registry directly.
Last but not least
If Windows is not working properly, startup is slow, or mcdatrep.exe is causing problems, a good Windows diagnostic tool may 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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