It’s not absolutely clear which product this file is part of and who is its author. Sometimes files like this can be dangerous. Make sure defender21.exe is a safe file by scanning your computer for viruses.
Defender21.exe is usually located in the C: sub-folder and its usual size is 36,864 bytes.
Important: malware can mask itself as defender21.exe.
The defender21.exe process is safe, and you can safely disable it. Some other processes use the same file name.
We also recommend optimizing your computer.
Common path(s): subfolder in C:Filesize(s): 36,864 bytes
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