rsProcessingAborted & rsErrorOpeningConnection
1) Open the report manager site
2) Click on data Sources, as per below image.
3) click on Data source name whatever you have
4) Select “Credentials stored securely in the report server”
5) Type user name and password
6) Tick mark required on “Use as windows credentials when connecting to the data source”
7) Click on Test connection, it will get message below test connection “Connection Created Successfully”
Thanks