ExcelServerApp' threw an exception System.IO.FileLoadException: Loading this assembly would produce a different grant set from other instances

ExcelServerApp' threw an exception System.IO.FileLoadException: Loading this assembly would produce a different grant set from other instances

If you already enable to display excel file in browser on SharePoint.

Solution: Ensure to check the below In order to resolve this issue

1.    Verify Excel Services Application is running correctly from central admin

2.    Verify Excel Calculation Services is in Started status

3.     Restart the Excel Calculation Services

 

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Workflow service is not installed or workflow requires a compatible workflow service

Workflow service is not installed or workflow requires a compatible workflow service

When we creating the work flow, we encounter the issue of creating work flow in SharePoint. The error should be” SharePoint 2013 workflow requires a compatible workflow service configured with SharePoint such as workflow manager”

Initially, the Workflow Service in SharePoint 2013 is not connected. it requires a compatible workflow service such as Workflow Manager.

 

Solution:

1.   Ensure that the Service Application configured for the work flow manager

 CA -> Application Management -> Manage service applications ->      Workflow Service Application

Install and configure workflow for SharePoint Server 2013

Follow the below MS article to configure the Work flow in SharePoint 2013.

http://technet.microsoft.com/en-us/library/jj658588.aspx

 

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The Remote server returned an error(503) server unavailable or The HTTP service located at http://localhost:32843/SecurityTokenServiceApplication/securitytoken.svc is too busy

The Remote server returned an error(503) server unavailable 
(or ) The HTTP service located at http://localhost:32843/SecurityTokenServiceApplication/securitytoken.svc is too busy

Issue: when we try to browse the SharePoint site, we should get the error “The Remote server returned an error(503) server unavailable”. 

 or The HTTP service located at http://localhost:32843/SecurityTokenServiceApplication/securitytoken.svc is too busy

Solution: the issue occur is due to the security Token service application pool. Follow the below steps to resolve the issue.

 1.    Ensure that the password provided to the user name for Token application pool is correct.

2.    Ensure that the “security Token service application” is in started state

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