Question: How do I install the Cross Chain Certificates on Microsoft Windows 2008 Server? Answer: 1. In order to install chain certificates into the server, you need to download two chain certificate files from Entrust certificate pickup link. These files are L1K Chain certificate (default file name: L1Kchain.txt) and L1K chain root / Cross certificate (default file name: L1Kchainroot.txt). 2. Click Start > Run. 3. Enter MMC and click OK. 4. Go to File > Add/Remove Snap-in. 5. Click Certificates, and select Add. 6. Select Computer Account, and click Next. 7. Select Local Computer and click Finish. 8. Click OK to close the Snap-ins window. 9. Double-click Certificates (local computer) to expand its view. 10. Right-click Intermediate Certification Authorities and select All Tasks Import. 11. Complete the wizard to import the chain certificate. Browse to locate the chain certificate to be imported (*.cer or *.txt). 12. Select Place all certificates in the following store and select the Intermediate Certificate Authorities store. 13. Click Next; then click Finish to complete the wizard. 14. Repeat these same Steps for the L1K chain root Certificate (L1KChainroot.txt).
15.Go to Trusted Root Certification Authorities, expand Certificates. Locate a certificate called Entrust Root Certification Authority - G2 with expiration date of 12/7/2030 then delete it. If you don't find this particular certificate then you can safely ignore this step.
16. You may continue to Server Certificate installation.