cdo.dll file version will not update

trying to update the cdo.dll file on my bes server

even after uninstalling and re-installing the new version it still shows the old version.

any ideas on how to resolve this ?

the OS is server 2008 x64
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After the installation, you may have to manually register Cdo.dll by using Regsrv32 (that is, regsrv32.exe full path and file name of CDO.DLL).
Checkout this link from BB:

If CDO.DLL is not registered in this directory, things won't work as they should.

The steps to fix cdo.dll file:

1. Check Blackberry article 04912
2. Unregister CDO.dll
3. Reboot the BES server
4. Register the version of CDO.DLL in the exchsrvr\bin directory
5. Restart the BlackBerry dispatcher service.

There may be more than one CDO.DLL file on the server.  For instance, you may find one in C:\Windows\System , and another in C:\Exchsrvr\bin

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