Qlik Web Connector Service does not start even though .NET Framework 4.8.1 is installed

[Maike151]

Hello everyone,

I want to update Qlik Web Connectors to Version July 2025. I did everything according to https://help.qlik.com/en-US/connectors/Subsystems/Web_Connectors_help/Content/Connectors_QWC/Setup-d....

But when trying to start the service, I get the error 

Windows could not start the Qlik Web Connectors service on Local Computer.
Error 1053: The service did not respond to the start or control request in a timely fashion.

Information/Things I've done

• I unblocked the ZIP-File before extracting the files
• The OS is Windows Server 2022
• .NET Framework 4.8.1 is installed (I checked in Registry Editor at HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full, Release = 533325)
  • There are subfolders 1031 and 1033 for German and English language respectively, the Release in 1031 is still 528449, I don't know if that could be a problem
• I reinstalled the service using the batch file of the new version
• Installed current Visual C++ Redistributables (2015-2022)
• Tried to start the QlikWebConnectorsSVC.exe manually

The error messages in Event log are the following:

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

- <System>

  <Provider Name="Application Error" />

  <EventID Qualifiers="0">1000</EventID>

  <Version>0</Version>

  <Level>2</Level>

  <Task>100</Task>

  <Opcode>0</Opcode>

  <Keywords>0x80000000000000</Keywords>

  <TimeCreated SystemTime="2025-11-12T08:49:11.9739821Z" />

  <EventRecordID>1582</EventRecordID>

  <Correlation />

  <Execution ProcessID="0" ThreadID="0" />

  <Channel>Application</Channel>

  <Computer>(computername)</Computer>

  <Security />

  </System>

- <EventData>

  <Data>QlikWebConnectorsSVC.exe</Data>

  <Data>2.179.0.0</Data>

  <Data>6880a6cc</Data>

  <Data>KERNELBASE.dll</Data>

  <Data>10.0.20348.4294</Data>

  <Data>73e9e45d</Data>

  <Data>e0434352</Data>

  <Data>000000000003f33c</Data>

  <Data>36d8</Data>

  <Data>01dc53b137504097</Data>

  <Data>c:\QlikWebConnectors\QlikWebConnectorsSVC.exe</Data>

  <Data>C:\WINDOWS\System32\KERNELBASE.dll</Data>

  <Data>135ad3f6-eb7a-47ad-a84c-b0e188c6d88b</Data>

  <Data />

  <Data />

  </EventData>

  </Event>

and

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

- <System>

  <Provider Name=".NET Runtime" />

  <EventID Qualifiers="0">1026</EventID>

  <Version>0</Version>

  <Level>2</Level>

  <Task>0</Task>

  <Opcode>0</Opcode>

  <Keywords>0x80000000000000</Keywords>

  <TimeCreated SystemTime="2025-11-12T08:49:11.8202887Z" />

  <EventRecordID>1581</EventRecordID>

  <Correlation />

  <Execution ProcessID="0" ThreadID="0" />

  <Channel>Application</Channel>

  <Computer>(computername)</Computer>

  <Security />

  </System>

- <EventData>

  <Data>Application: QlikWebConnectorsSVC.exe Frameworkversion: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception information: APIConnectorInterfaces.Exceptions.QwcException at APIConnectorWeb.Services.Deploy.DeployHelper.CheckAndDoFinalSetup(APIConnectorWeb.Services.Deploy.Deploy) at APIConnectorWeb.Services.Deploy.DeployHelper.Load(System.String) at APIConnectorWeb.Services.Deploy.DeployHelper.LoadConfig(System.Action`1<System.String>, System.String, System.String) at QlikWebConnectorsService.Service..ctor() at QlikWebConnectorsService.Program.Main()</Data>

  </EventData>

  </Event>

Does anyone have an idea what else I could try? 

Thank you and regards

Maike