Error while setting server report parameters. error message: the permissions granted to user 'Domain\User name' are insufficient for performing this operation. (rsaccessdenied)

For some user when you open the existing or default reports it may show some error which I mentioned below,

Error:

error while setting server report parameters. error message: the permissions granted to user 'Domain\User name' are insufficient for performing this operation. (rsaccessdenied)

Reason:

1) If the specific User is not created in the Reporting services, then it will show this type of error while opening the reports.

2) Errored reports you have to add on the User roles.

3) In case User ID is modified in the AX User on that time it may will get this type of issue.

Now see with the first solution:

Go to the web Reporting Services, navigate to the path http://ssrsreportservername/Reports/Pages/Folder.aspx, Go to Folder setting, then click New Role Assignment. The add the user or else group. Finally give the permission rights like, DynamicsAXBrowser, Reports., etc to the specific user and click OK button.

(or)

Else if the User is already created then delete that user and create the user again and assign the as it is.