Hi solved doing these steps:
- Select Run from the start menu and enter certlm.msc to open the certificate manager
- Navigate to Personal/Certificates and locate the cert with DeploymentsOnebox.DaxRunnerTokenUserCertificate.pfx as the issuer
- Select this cert and copy the thumbprint from the Details tab
- Open the reporting config file located at C:\Program Files\Microsoft SQL Server Reporting Services\SSRS\ReportServer\bin\ReportPVMConfiguration.xml in a text editor
- Paste the thumbprint as the value for ReportingClientCertificateThumbprint and save the file
- Start the Windows Services app, and find the SQL Server Reporting Services service
- Restart the SQL Server Reporting Services service
- SSRS reports should now work.
I hope that this can help you