"The application attempted to perform an operation not allowed by the security policy" when opening all SendSuite Live webpages

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Products affected: SendSuite® Live

Issue

When opening all SendSuite® Live webpages, the following error is displayed:
 
Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. 

Exception Details: System.Security.SecurityException: The source was not found, but some or all event logs could not be searched. To create the source, you need permission to read all event logs to make sure that the new source name is unique.  Inaccessible logs: Security.

Cause

The SendSuite Live Run As User has been removed from the local Administrators group on the server or computer.

Resolution

  1. Add the SendSuite Live Run As User back into the local Administrators group on the server or computer.
  2. Reset Internet Information Services .

UPDATED: February 17, 2021