THE OPERATION FAILED BECAUSE THE SERVER COULD NOT ACCESS THE DISTRIBUTED CACHE, SHAREPOINT

Problem Statement:

SharePoint returned the following error: The operation failed because the server could not access the distributed cache. Internal type name: Microsoft.Office.Server.Microfeed.MicrofeedException. Internal error code: 55. Contact your system administrator for help in resolving this problem.

Solution:

The common problem here is that, the app pool account hosting User profile service application / Distributed service account  does not have access on the user profile service application.

Make sure the Distributed cache cluster is functioning as required.

First Step, Open the IIS manager and identify the App pool account which is running the User Profile service applications.  

Second Step, Open Central Administration Manage Service Application, Select the User Profile service application, Properties and click “Permissions”. In this prompt, put in your service account that is running your Distributed Cache and User profile app pool account, and grant it full control.

. Note: If the above steps does not work, there is some problem with the distributed cache. Try rebuild Distributed Cache and give permission again.