-10-08 02:35:45,558 [P4920/D2/T24] ERROR Umbraco.Web.Strategies.ServerRegistrationEventHandler - Failed to update server record in database.
System.Data.SqlServerCe.SqlCeException (0x80004005): There is a file sharing violation. A different process might be using the file. [ D:\home\site\wwwroot\App_Data\Umbraco.sdf ]
   at System.Data.SqlServerCe.SqlCeConnection.Open(Boolean silent)
   at System.Data.SqlServerCe.SqlCeConnection.Open()
   at Umbraco.Core.Persistence.FaultHandling.RetryPolicy.<>c__DisplayClass20_0.<ExecuteAction>b__0()
   at Umbraco.Core.Persistence.FaultHandling.RetryPolicy.ExecuteAction[TResult](Func`1 func)
   at Umbraco.Core.Persistence.FaultHandling.RetryPolicy.ExecuteAction(Action action)
   at Umbraco.Core.Persistence.PetaPocoConnectionExtensions.OpenWithRetry(IDbConnection connection, RetryPolicy retryPolicy)
   at Umbraco.Core.Persistence.PetaPocoConnectionExtensions.OpenWithRetry(IDbConnection connection)
   at Umbraco.Core.Persistence.Database.OpenSharedConnection()
   at Umbraco.Core.Persistence.Database.BeginTransaction(IsolationLevel isolationLevel)
   at Umbraco.Core.Scoping.Scope.get_Database()
   at Umbraco.Core.Persistence.UnitOfWork.ScopeUnitOfWork.get_Database()
   at Umbraco.Core.Persistence.LockingRepository`1.WithWriteLocked(Action`1 action, Boolean autoCommit)
   at Umbraco.Core.Services.ServerRegistrationService.TouchServer(String serverAddress, String serverIdentity, TimeSpan staleTimeout)
   at Umbraco.Web.Strategies.ServerRegistrationEventHandler.TouchServerTask.PerformRun()
 2017-10-08 03:27:08,773 [P4920/D2/T25] ERROR Umbraco.Web.Scheduling.ScheduledPublishing - Failed (see exception).
System.Data.SqlServerCe.SqlCeException (0x80004005): There is a file sharing violation. A different process might be using the file. [ D:\home\site\wwwroot\App_Data\Umbraco.sdf ]
   at System.Data.SqlServerCe.SqlCeConnection.Open(Boolean silent)
   at System.Data.SqlServerCe.SqlCeConnection.Open()
   at Umbraco.Core.Persistence.FaultHandling.RetryPolicy.<>c__DisplayClass20_0.<ExecuteAction>b__0()
   at Umbraco.Core.Persistence.FaultHandling.RetryPolicy.ExecuteAction[TResult](Func`1 func)
   at Umbraco.Core.Persistence.FaultHandling.RetryPolicy.ExecuteAction(Action action)
   at Umbraco.Core.Persistence.PetaPocoConnectionExtensions.OpenWithRetry(IDbConnection connection, RetryPolicy retryPolicy)
   at Umbraco.Core.Persistence.PetaPocoConnectionExtensions.OpenWithRetry(IDbConnection connection)
   at Umbraco.Core.Persistence.Database.OpenSharedConnection()
   at Umbraco.Core.Persistence.Database.BeginTransaction(IsolationLevel isolationLevel)
   at Umbraco.Core.Scoping.Scope.get_Database()
   at Umbraco.Core.Persistence.UnitOfWork.ScopeUnitOfWork.get_Database()
   at Umbraco.Core.Persistence.Repositories.ContentRepository.ProcessQuery(Sql sqlFull, PagingSqlQuery pagingSqlQuery, Boolean withCache, Boolean includeAllVersions)
   at Umbraco.Core.Persistence.Repositories.ContentRepository.PerformGetByQuery(IQuery`1 query)
   at Umbraco.Core.Persistence.Repositories.RepositoryBase`2.GetByQuery(IQuery`1 query)
   at Umbraco.Core.Services.ContentService.GetContentForRelease()
   at Umbraco.Core.Publishing.ScheduledPublisher.CheckPendingAndProcess()
   at Umbraco.Web.Scheduling.ScheduledPublishing.<PerformRunAsync>d__5.MoveNext()