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Dynamics 365 Community / Forums / Microsoft Dynamics CRM (Archived) / Request for the permis...
Microsoft Dynamics CRM (Archived)

Request for the permission of type 'System.Security.Permissions.ReflectionPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

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Posted on by Shahbaaz Ansari 6,211

Hi All,

I am getting below error, i have create workflow activity and i have registered it but when it execute it, it is giving error

Request for the permission of type 'System.Security.Permissions.ReflectionPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
Thanks,
Shahbaaz

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  • Michel van den Brink Profile Picture
    Michel van den Brink 4,697 on at

    Hello,

    Can you share the part of the source code where this exception occurs?

    It looks like it's a trust issue with an assembly you are trying to reference.

  • Shahbaaz Ansari Profile Picture
    Shahbaaz Ansari 6,211 on at

    thanks Michel,

    I dont have the code, i just have dll file that i have updated, and while calling that workflow activity i am getting above error. i check many article on community it says register dll on isolation mode :NONE, i tried it but no luck

  • Michel van den Brink Profile Picture
    Michel van den Brink 4,697 on at

    Hello Shahbaaz,

    In Dynamics 365 Online everything runs in Isolation Mode (sandbox)

    There are a lot of assemblies, both third-party and Microsoft owned that are not on the whitelist (trusted) for running in Dynamics 365

     

    For more about this:

    https://docs.microsoft.com/en-us/dynamics365/customer-engagement/developer/plugin-isolation-trusts-statistics

       

    Without the source code it's difficult to pinpoint the exact issue. Do you have a stack trace perhaps?

  • Shahbaaz Ansari Profile Picture
    Shahbaaz Ansari 6,211 on at

    Hi Michel,

    I resolved it by updating the newton soft json dll.

    Thanks for your help.

    Shahbaaz

  • Pawan Nilank Profile Picture
    Pawan Nilank 30 on at

    Hi Shahbaaz,

    What have you done with newton json .dll ? I'm also getting similar error from a registered plugin. Please share the solution.

    Regards,

    Pawan

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