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Cisco Bug: CSCtb50892 - Sending secure messages via VVM only works once per server

Last Modified

Nov 30, 2018

Products (1)

  • Cisco Unity Servers

Known Affected Releases


Description (partial)


On the internal Visual Voice Mail (VVM) deployment, it is only possible to send an ecrypted message once.  Any reply/send after an initial one fail.  The visual interface will show success but the message will not be sent/received.


This problem occurs when the IUSR account in IIS cannot read/write the necessary key container which is in the file system under the location:

C:\Documents and Settings\All Users\Application Data\Microsoft\Crypto

and more specifically:

C:\Documents and Settings\All Users\Application Data\Microsoft\Crypto\RSA\MachineKeys
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