Install CRM Client 2011 after removing CRM Client 2013
If you have installed CRM 2013 for Outlook and then need to go back to CRM 2011 for Outlook, perform these steps:
- Uninstall CRM 2013 for Outlook
- Delete the program folder, the default location is C:\Program Files\Microsoft Dynamics CRM (or C:\Program Files (x86)\Microsoft Dynamics CRM for a 32-bit install on a 64-bit computer).
- Delete the MSCRM registry keys located at HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft and HKEY_CURRENT_USER\Software\Microsoft. There might be several keys including MSCRMClient, MSCRMIntegration, MSCRM_Setup and MSCRM.
If you are not confident editing the registry, then don't! If you modify the registry incorrectly you can cause programs to fail requiring a reinstall.