SSRS Subscriptions – Email – Windows File Share

So easy does not need much detail here.
My publish on a schedule to either a file share or by email.
To use Email settings need to set up in SSRS configuration of server.

PROBLEM
Subscriptions cannot be created because the credentials used to run the report are not stored, or if a linked report, the link is no longer valid.

SOLUTION
The report credentails were Windows Authentication. For my scenario it was feasible to save low read-only credentials with the report.