When you select a solution in Dynamics 365 and then click the Apply Solution Upgrade button, you encounter the following error:
"Action not available.
The [Solution Name] solution doesn’t have an upgrade that is ready to be applied."
If you click Download Log File, the log file includes a reference to error code -2147187397.
This message appears if the solution you selected does not have a solution upgrade to be applied.
The Apply Solution Upgrade button is intended to be used when you have imported an update for another solution that is already installed. When importing the updated solution, there is a "Stage for upgrade" option that appears. If this checkbox is selected, the upgrade action is not performed during solution import. An Apply Solution Upgrade button appears at the end of the import process. If you did not click this button, you can find the parent solution in the solution list and then click Apply Solution Upgrade.
Only use the Apply Solution Upgrade button if you have imported an update for a solution that was already installed and you chose the "Stage for upgrade" option.