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After I added new connection string into ConnectionStrings.config file, I cannot log into Sitecore and getting this exception:

enter image description here

Exception textually:

> Server Error in '/' Application.

> One or more exceptions occurred while processing the subscribers to the 'property:changed' event.
> Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

> Exception Details: System.AggregateException: One or more exceptions occurred while processing the subscribers to the 'property:changed' event.

> Source Error: 

> An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

> Stack Trace: 


> [AggregateException: One or more exceptions occurred while processing the subscribers to the 'property:changed' event.]
   Sitecore.Events.EventSubscribers.RaiseEvent(String eventName, Object[] parameters, EventResult result) +1849
   Sitecore.Events.Event.RaiseEvent(String eventName, Object[] parameters) +422
   Sitecore.Data.Properties.PropertyStore.RaiseEvent(String name, Object[] parameters) +85
   Sitecore.Web.Authentication.DefaultTicketManager.IsTicketExpired(Ticket ticket, Boolean useProlongation) +357
   Sitecore.Web.Authentication.DefaultTicketManager.GetTicket(String ticketId, Boolean returnExpired) +118
   Sitecore.Web.Authentication.DefaultTicketManager.IsTicketValid(String ticketId) +49
   Sitecore.Shell.Web.ShellPage.IsLoggedIn(Boolean returnAfterLogin) +314
   Sitecore.Shell.Web.UI.SecurePage.OnLoad(EventArgs e) +22
   System.Web.UI.Control.LoadRecursive() +154
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4088

> Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.2623.0

2 Answers 2

2

I have found root cause of this issue.

Database that should correspond to connection string was not present on SQL Server.

I was trying to add new publishing target to my Sitecore instance, therefore I have added new connection string for secondary web database.

I have forgotten to attach database into SQL Server and hence exception from Question.

Unfortunately, exception shown to the Sitecore user is not so descriptive and lead me nowhere. Indication for resolution was found in these exceptions in Sitecore error log:

ManagedPoolThread #2 12:56:18 ERROR Exception processing remote events from database: web_secondary Exception: System.Data.SqlClient.SqlException Message: Login failed for user 'webuser'. Source: .Net SqlClient Data Provider at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource1 retry, DbConnectionOptions userOptions) at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource1 retry) at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource1 retry) at System.Data.SqlClient.SqlConnection.Open() at Sitecore.Data.DataProviders.Sql.DataProviderCommand..ctor(IDbCommand command, DataProviderTransaction transaction, Boolean openConnection) at Sitecore.Data.DataProviders.Sql.SqlDataApi.<>c__DisplayClass26_0.<CreateCommand>b__0() at Sitecore.Data.DataProviders.NullRetryer.Execute[T](Func1 action, Action recover) at Sitecore.Data.DataProviders.Sql.SqlDataApi.<>c__DisplayClass29_0.b__0() at Sitecore.Data.DataProviders.NullRetryer.Execute[T](Func1 action, Action recover) at Sitecore.Data.DataProviders.Sql.SqlDataApi.CreateReader(String sql, Object[] parameters) at Sitecore.Data.DataProviders.Sql.SqlDataApi.<CreateObjectReader>d__271.MoveNext() at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable1 source) at Sitecore.Eventing.EventQueue.ProcessEvents(Action2 handler) at Sitecore.Eventing.EventProvider.RaiseQueuedEvents()

Hopefully this will help somebody with same exception. This is possible solution for you :)

2

i had this when i restored my PROD master DB to my local DEV environment.

ensure that your DB user masteruser

has both DataReader and DataWriter permissions.

once allocated you should be able to log into the experience platform

GRANT EXECUTE TO [masteruser];

ALTER ROLE db_datareader ADD MEMBER [masteruser]
GO
ALTER ROLE db_datawriter ADD MEMBER [masteruser]

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