Date:2013-05-12
Safety:Kaspersky McAfee Noton BitDefender AVG

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Microsoft Update Custom Component Locator

·Go to the download page

Using the zip or rar file
1.Download A0001721.dll 5.3.16.5
2.Extract A0001721.dll 5.3.16.5 from .zip. We recommend that you extract A0001721.dll 5.3.16.5 to the installation directory of the program that is requesting A0001721.dll 5.3.16.5.
3.If that doesn't work, you will have to extract A0001721.dll 5.3.16.5 to your system directory. By default, this is:
C:\Windows\System32 (Windows XP, Vista, 7, 8)
C:\WINNT\System32 (Windows NT/2000)
C:\Windows\System (Windows 95/98/Me)
4.If you use a 64-bit version of Windows, you should also place A0001721.dll 5.3.16.5 in C:\Windows\SysWOW64\
5.Make sure overwrite any existing files (but make a backup copy of the original file).
6.Reboot your computer.
7.If the problem still occurs, try the following:
8.Open Windows Start menu and select "Run...".
9.Type CMD and press Enter (or if you use Windows ME, type COMMAND)).
10.Type regsvr32 A0001721.dll 5.3.16.5 and press Enter.