Install the eRx Certificate Manager IdenTrust Only Utility
- Double-click the eRxCertificateManagerIdenTrustOnly_Installer_1.0.0.zip file that you downloaded to your computer. 
   You can view the following files in the folder.
- eRxCertificateManagerIdenTrustOnly_Installer_1.0.0.exe
 - eRxCertificateManagerIdentrustOnlyInstallerUserGuide.pdf
 
 - Double-click the eRxCertificateManagerIdenTrustOnly_Installer_1.0.0.exe file.
   The Compressed (zipped) Folders window opens.
 - Select Extract all. 
   The Select a Destination and Extract Files window opens.
 - Do one of the following:
   
- To extract the files to the default directory, select Extract.
 - To extract the files to an alternative directory, select Browse.
 
The eRxCertificateManagerIdenTrustOnly_Installer_1.0.0 folder opens. - Double-click the eRxCertificateManagerIdentrustOnly_Installer_1.0.0.exe file. 
   The Update - eRx Certificate Manager Utility IdentrustOnly Rev.1.0.0 window opens.
 - Select Next. 
   The Location to Save Files section appears.
 - Do one of the following:
   
- To accept the default path, select Next.
 - To select an alternative path, select Change, select a folder from the Change Folder window, and then select OK.
 
Note: If you select an alternative folder location, do not select c:\NextGen as the installation path. - If a message appears indicating that the folder already exists, select Yes to extract the files to that folder.