SharePoint Error : The trial period for this product has expired

We encountered this error when we tried to create a new site. However we were able to resolve the issue with the help of  following steps.
  • Navigate to Central Administration -> Operations -> Service Accounts (under Security Configuration)
  • Choose “Web Application pool”
  • Select the correspoding application pool
  • If selected account is Predefined - “Network service”, configure it to your site collection administrator.
  • Try creating the site after switching the account to your site collection administrator.

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