| Details | |
| Product: | Exchange |
| Event ID: | 12291 |
| Source: | MSExchangeT120 |
| Version: | 6.0 |
| Component: | Conferencing Service |
| Symbolic Name: | MSG_INTERNAL_T120_SECURITY |
| Message: | The Microsoft Exchange Data Conferencing service could not initialize T120 security. You will be unable to create secure conferences. |
| User Action | |
| If the Data Conferencing service is not hosting secure conferences, no action is required. If secure conferencing is necessary, install a certificate authority for the domain, manually issue a certificate authority for this T.120 MCU. | |