Certainly, everyone Dynamics 365 CE Consultant/Architect must have started importing the solutions and went for dinner, lunch, break or checked the mobile thinking the solution import would take some time. After they come back, the import might be still going on and at that time everyone would be eager to check what exactly the status of the import.
Also sometimes, knowingly or unknowingly you might cancelled/closed import wizard thinking let’s start the import again and when you try again the system must have shown a message saying “The import is in progress.” and you never know when it completes.
We have a solution for this, we can check the progress of the solution from Import Jobs. Open Advance Find and look for import Jobs, add a filter to show the records created on from last one or two hours (I normally apply the filter on Created on, if you want to get the results and sort on CreatedOn column). You will see the results showing percentage.
Hope this helps.