After change port for TCPIP PORT for default SQL Server instance (MSSQLSERVER), sql service and sql agent service did not started again

Question

Hi 
-when i install default instance MSSQLSERVER i added a domain account as a service account,
- when i change port for TCPIP PORT , and after sql service and sql agent service did not started again.
it thrown error 
The SQL Server (MSSQLSERVER) service failed to start due to the following error: 
The service did not start due to a logon failure.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" />
    <EventID Qualifiers="49152">7000</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
but when i add domain\sqservice account in administrators group these services started,
1) here  why this change behavior  happened
2i changed the port 1500
adil

Answer 1

HI
the sql instance service is running with domain/sqlservice account , 
- i stopped the sql service service
- when i start it not started again and i found below error message
Domain and account: MOJPORTAL\spsqlservice
This service account does not have the required user right "Log on as a service."
User Action
Assign "Log on as a service" to the service account on this computer. You can use Local Security Settings (Secpol.msc) to do this.
 If this computer is a node in a cluster, check that this user right is assigned to the Cluster service account on all nodes in the cluster.
If you have already assigned this user right to the service account, and the user right appears to be removed, 
check with your domain administrator to find out if a Group Policy object associated with this node might be removing the right.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" />
    <EventID Qualifiers="49152">7041</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8080000000000000</Keywords>
    <TimeCreated SystemTime="2015-04-24T17:12:58.326973300Z" />
    <EventRecordID>2177</EventRecordID>
    <Correlation />
    <Execution ProcessID="520" ThreadID="4044" />
    <Channel>System</Channel>
    <Computer>PORTALSQL1.mojportal.com</Computer>
    <Security />
  </System>
  <EventData>
    <Data Name="param1">MSSQL$xSQL</Data>
    <Data Name="param2">xxxL\spsqlservice</Data>
  </EventData>
</Event>
adil