App Management Service & Microsoft Sharepoint Foundation Subscription Service are running but it still shows error as follows.
Error message :
Settings or services required to complete this request are not currently available. Try this operation again later. If the problem persists, contact your administrator.
Error in sharepoint log viewer :
Microsoft.SharePoint.SPException: Settings or services required to complete this request are not currently available. Try this operation again later. If the problem persists, contact your administrator.
at Microsoft.SharePoint.SPSubscriptionSettingsServiceApplicationProxy.ProcessCommonExceptions(Exception ex, SPServiceLoadBalancerContext context) at Microsoft.SharePoint.SPSubscriptionSettingsServiceApplicationProxy.ExecuteOnChannel(CodeBlock codeBlock) at Microsoft.SharePoint.SPSubscriptionSettingsServiceApplicationProxy.GetSubscriptionMetadata(Guid subscriptionId) at Microsoft.SharePoint.SPSiteSubscriptionSettingsManager.GetMetadata(SPSiteSubscriptionIdentifier subscriptionIdentifier) at Microsoft.SharePoint.ApplicationPages.ConfigureAppSettingsPage.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)