Microsoft Live communication server 2005

Failed to connect to backend database.  Live Communications Server will continuously attempt to reconnect to the backend.  While this condition persists, incoming messages will receive error responses.

Backend Server: (local)\rtc   Database: rtc  Connection string of:
driver={SQL Server};Trusted_Connection=yes;AutoTranslate=no;server=(local)\rtc;database=rtc;network=dbmslpcn;
Cause: Possible issues with backend database.
Resolution:
Ensure the backend is functioning correctly.

Failed to connect to backend database.  Live Communications Server will continuously attempt to reconnect to the backend.  While this condition persists, incoming messages will receive error responses.
 
Backend Server: (local)\rtc   Database: rtc  Connection string of: 
driver={SQL Server};Trusted_Connection=yes;AutoTranslate=no;server=(local)\rtc;database=rtc;network=dbmslpcn;
Cause: Possible issues with backend database.
Resolution:
Ensure the backend is functioning correctly.

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SecureMetersAsked:
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gaanthonyConnect With a Mentor Commented:
Are you running LCS 2005 SP1 Standard Edition or Enterprise Edition?
Standard edition of LCS installs and uses the MSDE 2000 SQL desktop engine locally and installs a SQL instance named RTC.  Verify that SQL services are running locally.
Enterprise Edition of LCS requires a separate stand alone SQL 2005 standard or enterprise  installation to be installed on a separate box from the LCS server.  If it's enteprise edition then your database connection string is wrong as it's pointing to the local server.
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SecureMetersAuthor Commented:
thanks
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