Error:- ---------------------------
Email Router Configuration Manager
---------------------------
The Email Router Configuration Manager was unable to retrieve user and queue information from the Microsoft Dynamics CRM server. This may indicate that the Microsoft Dynamics CRM server is busy. Verify that URL 'http://uat/crm/' is correct. Additionally, this problem can occur if specified access credentials are insufficient. To try again, click Load Data. (The decryption key could not be obtained because HTTPS protocol is enforced, but not enabled. Enable HTTPS protocol, and try again.)
---------------------------
OK   
---------------------------

Solution:-
Step 1: Open RegEdit
Step 2: Open the Path HKLM\Software\Microsoft\MSCRM
Step 3: Create a New DWORD
Name:- DisableSecureDecryptionKey
Value data:- 1