Virtual Machines Do Not Start After the Upgrade of XenServer

After an upgrade of XenServer, Virtual Machines VMs will not start with the following error: Error: Starting VM 'Name-of-VM - This operation cannot be performed because the specified VDI could not be found on the storage substrate...

It is impossible to add SMB ISO SR to XS 8.2 CU1 hosts without user credential info

After upgrading XenServer from 7.1.2 to 8.2 CU1, the customer can't add Windows File Sharing ISO library which does not require user credential...