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cannot be created because the credentials used to run the report are not stored, or if a linked report, the link is no longer valid.

I have looked through everything on my SSRS, and cannot figure out why it won't let me create a subscription. I get a warning sign over top of create link when I try to even create one. I am using Windows Integrated Security on both the data source and the report that I am trying to create a subscription for.

I do have the correct SQL server connection string. I just can't figure out why it won't run.

I tried a a shared data source. A custom data source. I have put in credentials for it to run, and the report runs fine. I've used Windoes integrated security. Not sure what I am missing.

DBA