Under Step 3: Request, Install, or Assign Certificates, click Run.
In the Certificate Wizard, select External Edge certificate (public internet) and then click Request.
On the Name and Security Settings page, enter the following information, and then click Next.
Friendly Name: Enter a friendly name for the certificate (i.e. My Lync Edge Server).
Bit Length: In the drop-down list, select 2048.
Mark the certificate’s... If you have multiple servers in the edge cluster, check this box.
On the Organization Information page, enter the following information, and then click Next.
Organization: Enter your organization’s name.
Organizational Unit: Enter your organizational unit’s name.
On the Geographical Information page, enter the following information and then click Next.
Country/Region: In the drop-down list, select your country or region.
State/Province: Enter the name of your state or province.
City/Locality: Enter the name of your city or locality.
On the Certificate Request File page, click View to open the CSR request file.
You can also find the CSR request file in the folder where you saved it (i.e. C:\csr.text).
To close the Certificate Request wizard, click Finish.
Congratulations, you have successfully created a CSR on Lync Server 2010!