Could not load file or assembly 'Microsoft.ReportingServices.ProcessingObjectModel'

Question

Hi, I have a custom authentication in the reporting services 2019,

And i'm getting this error whenever trying to open a report :

An internal error has occurred on the report server. For more information, see the error log. (rsInternalError)
Could not load file or assembly 'Microsoft.ReportingServices.ProcessingObjectModel, Version = 2019.11.0.0, Culture = neutral,
PublicKeyToken = 89845dcd8080cc91' or one of its dependencies.
An API call was terminated abnormally. (Exception from HRESULT: 0x800300FA (STG_E_ABNORMALAPIEXIT))

PS : I guaranted Full Access to this folder :

C:\Program Files\Microsoft SQL Server Reporting Services\SSRS\ReportServer\RSTempFiles

Any Help and Thanks.

Answer 1

Hi @khaled ghoul ,
This error message occurs when the process or configured impersonation account does not have permissions access to the ASP.NET temporary files folder. To avoid this issue, please try to specify the Read/Write permission for an account to "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files".
Do you use IIS impersonation, if so, please refer to the following operations:

1. In the features view, under the IIS sections double click on Authentication.
2. Enable ASP.NET Impersonation
3. Select ASP.NET Impersonation and select "Edit..." under the actions pane
4. Select Authenticated user
   And verify whether your SSRS version is consistent with the "Version = 2019.11.0.0" in the error message, if not, try to update your SSRS.

For more information about this issue, please see:
http://social.technet.microsoft.com/Forums/en/sqlreportingservices/thread/1fdce664-ed55-483d-a249-6b84f0615e45
Hope this helps.
Regards,
Joy

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