Google 就知道了..
Description: Update64.exe is not essential for Windows and will often cause problems. The file update64.exe is located in the C:\Windows\System32 folder. The file size on Windows 10/8/7/XP is 369,664 bytes.
http://www.file.net/process/update64.exe.html
The application has no file description. Update64.exe is an unknown file in the Windows folder. The program is not visible. Update64.exe is not a Windows system file. Therefore the technical security rating is 72% dangerous.