[W8.1 Update 1] "Windows Store failed to sync machine licenses. Result code 0x80070490"

I think the problem is the way Microsoft configured the Windows Task.

Microsoft set the task to be launched by users.  However, users have insufficient permissions to run the Windows Task successfully.  This includes users who are members of the Administrators group.

The solution is to configure the Windows Task to be launched by an elevated Windows account (e.g., Local Service or Local System), which has the necessary permissions.  I suggest using the Local Service account since the Local System account would give the Windows Task too many privileges unnecessarily.

Here are the steps:

1. Launch Task Scheduler using an account with administrative privileges.
   1. Click Start, enter “PowerShell”.
   2. Right-click the Windows PowerShell search result entry and then select Run as administrator.
   3. In the console window, enter the following command: “taskschd.msc”.
2. In the Task Scheduler window, on the left pane, navigate to the folder containing the WSRefreshBannedAppsListTask task.  (Note: The path is “Task Scheduler (Local)\Task Scheduler Library\Microsoft\Windows\WS”.  A quick way to reach the task is to double-click the entry representing the task that is located on the list in the Active Tasks pane, which is located at the bottom of the window.)
3. In the right pane, right-click the WSRefreshBannedAppsListTask task and then click Properties.
4. In the WSRefreshBannedAppsListTask Properties window, click Change User or Group…
5. In the Select User or Group window, enter “Local Service” in the “Enter the object name to select” text box and then click OK.
6. In the WSRefreshBannedAppsListTask Properties window, click OK.

I hope this solution helps.

2. In the right pane, right-click the WSRefreshBannedAppsListTask task and then click Properties.
3. In the WSRefreshBannedAppsListTask Properties window, click Change User or Group…
4. In the Select User or Group window, enter “Local Service” in the “Enter the object name to select” text box and then click OK.
5. In the WSRefreshBannedAppsListTask Properties window, click OK.

I hope this solution helps.

Instantly gave me a new error;

Log Name:      System

Source:        Microsoft-Windows-DistributedCOM

Date:          9/16/2014 1:21:35 PM

Event ID:      10016

Task Category: None

Level:         Error

Keywords:      Classic

User:          LOCAL SERVICE

Computer:      LenovoG570

Description:

The machine-default permission settings do not grant Local Activation permission for the COM Server application with CLSID

{82C49192-BE68-467F-BF50-971FD01DABF3}

 and APPID

{82C49192-BE68-467F-BF50-971FD01DABF3}

 to the user NT AUTHORITY\LOCAL SERVICE SID (S-1-5-19) from address LocalHost (Using LRPC) running in the application container Unavailable SID (Unavailable). This security permission can be modified using the Component Services administrative tool.

Event Xml:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">

  <System>

    <Provider Name="Microsoft-Windows-DistributedCOM" Guid="{1B562E86-B7AA-4131-BADC-B6F3A001407E}" EventSourceName="DCOM" />

    <EventID Qualifiers="0">10016</EventID>

    <Version>0</Version>

    <Level>2</Level>

    <Task>0</Task>

    <Opcode>0</Opcode>

    <Keywords>0x8080000000000000</Keywords>

    <TimeCreated SystemTime="2014-09-16T17:21:35.356711000Z" />

    <EventRecordID>75095</EventRecordID>

    <Correlation />

    <Execution ProcessID="760" ThreadID="10148" />

    <Channel>System</Channel>

    <Computer>LenovoG570</Computer>

    <Security UserID="S-1-5-19" />

  </System>

  <EventData>

    <Data Name="param1">machine-default</Data>

    <Data Name="param2">Local</Data>

    <Data Name="param3">Activation</Data>

    <Data Name="param4">{82C49192-BE68-467F-BF50-971FD01DABF3}</Data>

    <Data Name="param5">{82C49192-BE68-467F-BF50-971FD01DABF3}</Data>

    <Data Name="param6">NT AUTHORITY</Data>

    <Data Name="param7">LOCAL SERVICE</Data>

    <Data Name="param8">S-1-5-19</Data>

    <Data Name="param9">LocalHost (Using LRPC)</Data>

    <Data Name="param10">Unavailable</Data>

    <Data Name="param11">Unavailable</Data>

  </EventData>

</Event>

Edit.   Change permission to    System      works just fine .

Fixed the recurring error messages;   

      Windows Store failed to sync machine licenses. Result code 0x80070490

Mike P,

Thanks for pointing this out.  I was able to reproduce the DCOM permissions error on my computers.  So, it looks like the Local Service account has insufficient permissions as well.  Setting the task to launch using the Local System resolved the issue for me.  (For step 5, I entered "System" as the Windows user.)

I've summarized the steps here for completeness.

1. Launch Task Scheduler using an account with administrative privileges.
2. Click Start, enter “PowerShell”.
3. Right-click the Windows PowerShell search result entry and then select Run as administrator.
4. In the console window, enter the following command: “taskschd.msc”.
5. In the Task Scheduler window, on the left pane, navigate to the folder containing the WSRefreshBannedAppsListTask task.  (Note: The path is “Task Scheduler (Local)\Task Scheduler Library\Microsoft\Windows\WS”.  A quick way to reach the task is to double-click the entry representing the task that is located on the list in the Active Tasks pane, which is located at the bottom of the window.)
6. In the right pane, right-click the WSRefreshBannedAppsListTask task and then click Properties.
7. In the WSRefreshBannedAppsListTask Properties window, click Change User or Group…
8. In the Select User or Group window, enter “System” in the “Enter the object name to select” text box and then click OK.
9. In the WSRefreshBannedAppsListTask Properties window, click OK.

Could you please check if the following registry value is updated when the task is run as SYSTEM:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Store\SyncMachineLicenses\LastSyncTime?

It is possible that the task might require to be run as a user. Please note that it requires user to be logged in to run (so user profile is loaded). This is probably needed to get the information which Apps were downloaded/bought by the user for license check. If the task runs as SYSTEM, it may not detect any Apps as nothing was downloaded from Windows Store as SYSTEM. As such the task may just gracefully exit without any information.

This is just my guess, so I may very well be wrong here.

Either way, I believe the best way to go would be to check Windows 8.0 system or Windows 8.1 without Update (KB2919355) to see how the task was setup there - something I cannot do at the moment.

Seems to work for me except step 1 (I have no START in my Windows 8.1 ) but since you are not from Microsoft I hope I have not caused myself any other unintended consequences.   Why has no Microsoft person agreed with you (at least so far??) as to your diagnosis of this problem?  You do seem to make sense.

I did it this way and the error messages stopped:

Right mouse click on my Command Prompt icon on my desktop.

Click 'Run as Administrator'.

Enter: Powershell

Enter: taskschd.msc

In left pane position to folder level: Task Scheduler (Local)\Task Scheduler Library\Microsoft\Windows\WS

In the right pane, right-click the WSRefreshBannedAppsListTask task and then click Properties.

In the WSRefreshBannedAppsListTask Properties window, click Change User or Group…

In the Select User or Group window, enter “Local Service” in the “Enter the object name to select” text box and then click OK.

In the WSRefreshBannedAppsListTask Properties window, click OK and OK.

Exit taskschd

Enter Exit to exit powershell

Enter Exit to exit command prompt