Test Connection to the Migrator for Notes to SharePoint Import Service is failing in SharePoint 2013 environment (4331407)

Test Connection to the Migrator for Notes to SharePoint Import Service is failing in SharePoint 2013 environment

Test Connection to the Migrator for Notes to SharePoint Import Service is failing in SharePoint 2013 environment and getting the following error:

Unable to connect to the Migrator for Notes to SharePoint Import Service at 'http://<sharepoint web server>:8888/ImportSession.svc' due to the following error: 'Could not load file or assembly 'Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' or one of its dependencies. The system cannot find the file specified.

Details:
System.ServiceModel.FaultException`1[System.ServiceModel.ExceptionDetail]: Could not load file or assembly 'Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' or one of its dependencies. The system cannot find the file specified. (Fault Detail is equal to An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is:
System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' or one of its dependencies. The system cannot find the file specified

Incorrect .NET CLR version in the Migrator for Notes to SharePoint (MNSP) Import Service Application Pool

Open the Internet Information Services (IIS) Manager where the MNSP Import Service installed

In the IIS Manager Console:

1. Go to the Application Pools, select MNSP Migrator Import Service App Pool
2. Right Click Select "Basic Settings"
3. Change the .NET CLR Version to ".NET CLR Version v4.0.xxxxx
4. Click OK, and restart the Application Pool