In oder to change the CRM connection credentials for active CRM users for DocumentsCorePack Client and/or TelephoneIntegration Client for MS CRM, please follow the below steps. 

In some rare cases the WScript.Shell ActiveX component is not correctly registered. This causes, that the DocumentsCorePack Print in Word and TelephoneIntegration Call Number buttons are not working properly. To resolve the issue open a command prompt and enter regsvr32.exe wshom.ocx

That’s it! 

CTI does need the server component in a hosted environment as well, but you can launch the CTI Server setup from any Client, as long as you have a user with full access to CRM.

You need to select the hosted options on the Connection dialog. 

To downgrade the KDTele-tools in order to use the previous event-model, simply donwload the downgrade package from:

http://62.99.232.162/TI/downgrade.zip

and extract the package into a “downgrade” folder within the installation directory of the TelephonIntegration (TI) - Client component.