workflow manager backend service automatically stops

workflow manager backend service works properly before after updating the credentials its created the issue.

The issue is workflow manager backend service is automatically stops

In my local machine password will expire for every 45 days, this is the reason for updated the password in the services. I am stuck over here.

I checked the event logs, its gives me

eventviewer -> windows logs -> application (two errors)

Log Name: Application
Source: Application Error
Date: 10/14/2016 12:57:45 PM
Event ID: 1000
Task Category: (100)
Level: Error
Keywords: Classic
User: N/A
Description:
Faulting application name: Microsoft.Workflow.ServiceHost.exe, version: 1.0.20922.0, time stamp: 0x505e1b24
Faulting module name: KERNELBASE.dll, version: 6.1.7601.23539, time stamp: 0x57c99bd4
Exception code: 0xe0434352
Fault offset: 0x000000000001a06d
Faulting process id: 0x25f8
Faulting application start time: 0x01d225ec6be601b8
Faulting application path: C:\Program Files\Workflow Manager\1.0\Workflow\Artifacts\Microsoft.Workflow.ServiceHost.exe
Faulting module path: C:\WINDOWS\system32\KERNELBASE.dll
Report Id: b2875a17-91df-11e6-98e1-d4bed9bae812

Next one

Log Name: Application
Source: .NET Runtime
Date: 10/14/2016 12:57:44 PM
Event ID: 1026
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Description:
Application: Microsoft.Workflow.ServiceHost.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.Runtime.Serialization.SerializationException
at System.Runtime.Serialization.XmlObjectSerializerReadContext.GetExistingObject(System.String, System.Type, System.String, System.String)
at DynamicClass.ReadVariable.VariableLocationOfstringk9wYX3t0FromXml(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext, System.Xml.XmlDictionaryString[], System.Xml.XmlDictionaryString[])
at System.Runtime.Serialization.ClassDataContract.ReadXmlValue(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.Type, System.String, System.String)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.RuntimeTypeHandle, System.String, System.String)
at DynamicClass.ReadArrayOfLocationFromXml(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext, System.Xml.XmlDictionaryString, System.Xml.XmlDictionaryString, System.Runtime.Serialization.CollectionDataContract)
at System.Runtime.Serialization.CollectionDataContract.ReadXmlValue(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.Type, System.String, System.String)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.RuntimeTypeHandle, System.String, System.String)
at DynamicClass.ReadLocationEnvironmentFromXml(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext, System.Xml.XmlDictionaryString[], System.Xml.XmlDictionaryString[])
at System.Runtime.Serialization.ClassDataContract.ReadXmlValue(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.Type, System.String, System.String)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.RuntimeTypeHandle, System.String, System.String)
at DynamicClass.ReadActivityInstanceFromXml(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext, System.Xml.XmlDictionaryString[], System.Xml.XmlDictionaryString[])
at System.Runtime.Serialization.ClassDataContract.ReadXmlValue(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.Type, System.String, System.String)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.RuntimeTypeHandle, System.String, System.String)
at DynamicClass.ReadActivityInstance.ChildListFromXml(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext, System.Xml.XmlDictionaryString[], System.Xml.XmlDictionaryString[])
at System.Runtime.Serialization.ClassDataContract.ReadXmlValue(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.Type, System.String, System.String)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.RuntimeTypeHandle, System.String, System.String)
at DynamicClass.ReadActivityInstanceFromXml(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext, System.Xml.XmlDictionaryString[], System.Xml.XmlDictionaryString[])
at System.Runtime.Serialization.ClassDataContract.ReadXmlValue(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.Type, System.String, System.String)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.RuntimeTypeHandle, System.String, System.String)
at DynamicClass.ReadActivityInstanceMap.InstanceListFromXml(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext, System.Xml.XmlDictionaryString[], System.Xml.XmlDictionaryString[])
at System.Runtime.Serialization.ClassDataContract.ReadXmlValue(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.Type, System.String, System.String)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.RuntimeTypeHandle, System.String, System.String)
at DynamicClass.ReadArrayOfActivityInstanceMap.InstanceListFromXml(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext, System.Xml.XmlDictionaryString, System.Xml.XmlDictionaryString, System.Runtime.Serialization.CollectionDataContract)
at System.Runtime.Serialization.CollectionDataContract.ReadXmlValue(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.Type, System.String, System.String)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.RuntimeTypeHandle, System.String, System.String)
at DynamicClass.ReadInstanceMapFromXml(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext, System.Xml.XmlDictionaryString[], System.Xml.XmlDictionaryString[])
at System.Runtime.Serialization.ClassDataContract.ReadXmlValue(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.Type, System.String, System.String)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.RuntimeTypeHandle, System.String, System.String)
at DynamicClass.ReadExecutorFromXml(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext, System.Xml.XmlDictionaryString[], System.Xml.XmlDictionaryString[])
at System.Runtime.Serialization.ClassDataContract.ReadXmlValue(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.Type, System.String, System.String)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.RuntimeTypeHandle, System.String, System.String)
at DynamicClass.ReadWorkflowSessionStateFromXml(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext, System.Xml.XmlDictionaryString[], System.Xml.XmlDictionaryString[])
at System.Runtime.Serialization.ClassDataContract.ReadXmlValue(System.Runtime.Serialization.XmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(System.Runtime.Serialization.XmlReaderDelegator, Int32, System.Type, System.String, System.String)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(System.Runtime.Serialization.XmlReaderDelegator, System.Type, System.String, System.String)
at System.Runtime.Serialization.NetDataContractSerializer.InternalReadObject(System.Runtime.Serialization.XmlReaderDelegator, Boolean)
at System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions(System.Runtime.Serialization.XmlReaderDelegator, Boolean, System.Runtime.Serialization.DataContractResolver)
at System.Runtime.Serialization.XmlObjectSerializer.ReadObject(System.Xml.XmlDictionaryReader)
at Microsoft.Activities.Dispatcher.WorkflowSessionSerializer.DeserializeWorkflowSessionState(System.IO.Stream)
at Microsoft.Activities.Dispatcher.DispatchLoopInstanceAsyncResult.SessionAccepted(System.IAsyncResult)
at Microsoft.Activities.Dispatcher.DispatchLoopInstanceAsyncResult.Isolate(AsyncCompletion, System.IAsyncResult)
at Microsoft.Activities.Dispatcher.DispatchLoopInstanceAsyncResult.ExceptionHandlingFrame(System.IAsyncResult)

It looks like a problem with the Serialisation of the workflow to or from the Persistence database. You mention changed credentials. Perhaps your database is not set up with these new credentials?