An error occurred during the pool backend detection: Pool backend discovery failed. Failed to start SQL service or invalid SQL instance (Solved)

)Issue

When you try to create an enterprise pool by using the Microsoft Lync Server 2010 or Microsoft Office Communications Server deployment wizard, you receive the following error message:

"An error occurred during the pool backend detection

Pool backend discovery failed

Failed to start SQL service or invalid SQL instance.

This can happen due to network or credential problems. Please make sure networks is good and logon has sufficient permissions."

Solution

·         Task 1

In the FE  configuration wizard ,in SQL Server instance box try to use FQDN rather than its netbios name

Eg: MYSQLSERVER.mydomain.com\OCSINSTANCE

If OCS is using default instance do the change accordingly

·         Task-2

Check the DNS in the AD whether OCS Pool name is added or not

·         Task 3

Check the windows firewall is configured properly so that it wont stop any communication between OCS front end server and SQL backend servers .Preferably stop the firewall and check first , if it is working fine then try to add the relevant rules for security standpoint

·         Task 4

Check whether SQL server, SQL browser and SQL agent services are running in the SQL server. If this is a freshly installed SQL server, try to open the SQL management studio and connect to the SQL DB to check it is working fine.

·         Task 4

Install the latest service pack for the installed SQL version and reboot the server

·         Task 5

Check whether the user is having sufficient privilege  in both SQL and OCS (for OCS the user must be a member of  RTCUniversalServerAdmins group) and in SQL user preferably should be in sysadmin group (I am not sure whether any other privilege is sufficient or not )

·         Task -6

Check whether the SQL server is configured to accept remote connections.

o    Click Start, Programs, Microsoft SQL Server 2005/2008 and select SQL Server Configuration Manager.

o    Select “SQL Server Network Configuration “

o    Double click on “Protocols for SQLEXPRESS”

o    Check whether TCP/IP is enabled or not, if not enabled and select Yes to enable it .

o    In the next tab “ IP address “,check whether the port number is same for all the TCP port field, (default port is 1433) and change accordingly ,for me it is 1433 itself for all .

o    Check whether IP address of the SQLserver is added into the IP address field under IPA2 heading.

o    Restart the SQL server services from services.msc and

·         Task -7

Click “Retry “option in the FE server.

communicator cannot connect to the server because the required security is not in place (Solved)

OCS client is  not able to expand users in any of the AD group lists . It is showing error as below

“Communicator cannot connect to the server because the required security is not in place”

Solution:

The issue was with the certificate which is not providing a secure channel between the user computer and the server

I tries the below links from the user system and found it was showing a certificate error

https://ocspool.yourdomain.com/abs/int/files/Sample_Company_Phone_Number_Normalization_Rules.txt
https://ocspool.yourdomain.com/conf/ext/Tshoot.html

Note: where ocspool.yourdomain.com is the FQDN of the OCS pool

Then I installed the certificate from the IE itself and the issue resolved

Desktop Share Icon not in OCS and Lync client (Solved)

desktop sharing icon  not in MOC
OR
Desktop share option is not in OCS

I was installing  OCS and Lync in the same domain for testing purpose. After installing the complete infrastructure I realized that “Desktop Sharing “option was not available on both OCS and Lync clients. It was disappeared in the client window L . After googling for some time I realized that it is because “Global policy “was not configured yet on both OCS and Lync
Enable Desktop share in OCS
To enable this open OCS R2 administration console, select Global Properties, Meetings tab, locate Default Policy (under Policy Definition) and click Edit.  Check “Enable Program and Desktop Sharing” and “Allow control of shared programs and desktop”
For anonymous desktop sharing use, select “Allow users to invite anonymous participants” within the OCS global properties

Enable Desktop share in Lync

Open “Lync server Control panel” and select “Conferencing “in the left side pane. Edit “Global” settings. And select “enable Application sharing “ and Enable Application sharing and Desktop “

After these settings preferably do a service restart which will enable “Desktop Share” window in the clients communicator client

Prerequisite installation failed: Wmf2008R2 (Solved)

Error

Prerequisite installation failed: Wmf2008R2  is the error while I tried to install  “Setup or remove Lync Components”

Cause

This error is due to the prerequisite check for the Media-Format-Package and returns the following information back to the Setup Lync Server components page: And the installation file couldn’t find the 2008R2 version of Windows Media Format.

Resolution

Open the server manager and open features and check whether “Desktop experience “option is selected or not. If not, check the box and install it.

Note: This installation requires a reboot