deploy RegKeys on Win 10 IoT

Hi,

I will deploy several RegKeys on Wyse Win 10 IoT Clients.

So i create a bat file with the content

@echo off

REM disable Control + Alt + Del
reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v DisableCad /t REG_DWORD /d 1

REM Configure server authentication for client
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /f /v AuthentificationLevel /t REG_DWORD /d 1

[.......]

exit

I've create a Client-App-Policy and a job to deploy the bat to the clients. But the regKeys will not imported.

In the WyseDeviceAgent Log I could see:

Performing File download = settings.bat
Download attempt at 0 minutes
This is App service mode
Trusted repository server..proceed 
Downloads completed settings.bat
Advanced app : Exeption inside checksum validation. Exeption : Checksum failed for app settings.bat
Donwloads completed settings.bat 
revert Temp Location

In WMS -> Job details I could see:

Error - [Name: settings.bat Description:Checksum failed for app settings.bat Status: DOWNLOAD_FAILED]

Is the "checksum error" a default error, when working with bat files?
Have anyone a idea, what the issue could be?
Does it work for you?

Best Regards
Patrick