Issue:

Uninstalling DBSync solution package from MSCRM. The DBSync solution package will not uninstall unless: (1) all DBSync custom fields, buttons, or links, are removed from the page layouts of the respective MSCRM objects; or, the imported DBSync package (managed or un-managed) is deleted.

Solution:

Use following procedures to uninstall the DBSync package from the MSCRM instance.

1.Login to your MSCRM Dynamics instance (online or on-premise) where DBSync package is imported - as shown:

2.Go to Settings, Customization, Solutions and open it by clicking on it - as shown:

3.Check DBSync package's checkbox. Then, click Delete in order to delete the DBSync package - as shown:

Once the DBSync package is un-installed, DBSync will no longer exist in your MSCRM.