After the upgrade is done, you will be redirected back to the login page.
Login to Delphix Setup to make sure that the upgrade succeeded and that the new version is running.
A post-upgrade cleanup job is run automatically after the upgrade is done. This job refreshes environments and re-enables sources to bring objects back into a working state. VDB access will not be available at all until the environments have been refreshed and the objects are re-enabled by the job Perform cleanup tasks following a Delphix Engine upgrade.
If you used Continue Upgrade to force the upgrade as is described in Failure to Quiesce a Dataset, the Report tab will contain the list of pre-upgrade quiesce failures. Upgrade will make a best effort to restore functionality to these datasets, but it may still hit the same errors that prevented the datasets from being quiesced successfully before the upgrade. You may need to manually bring up these datasets on the target hosts.