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Error thrown by Flexmonster Data Speed Accelerator for Miscrosoft SSAS

Re-Open
Pablo Schor asked 1 day ago

I installed Flexmonster Data Speed Accelerator for Miscrosoft SSAS according to the instructions on the website. Without changing anything in the configuration, I get this error message. I tried changing the port to a random number and still get the same error. I'm running this on a Windows machine that has installed SQL Server 2022 and SSAS.

 

2025-08-05 16:09:45.5800 | TRACE | Flexmonster Data Speed Accelerator for Miscrosoft SSAS

2025-08-05 16:09:45.6083 | TRACE | Version 2.9.109

2025-08-05 16:09:45.6083 | TRACE | 

2025-08-05 16:09:45.6221 | TRACE | Testing connection...

2025-08-05 16:09:45.8752 | TRACE | Data Source connection [MultidimensionalProject1] - OK

 

2025-08-05 16:09:45.8832 | TRACE | Starting server...

2025-08-05 16:09:45.9684 | ERROR | Starting server - FAILED

2025-08-05 16:09:45.9684 | INFO | ! PLEASE TRY TO USE ANOTHER PORT IN flexmonster.config FILE !

2025-08-05 16:09:45.9684 | ERROR | Exception has been thrown by the target of an invocation.

   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)

   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)

   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

   at Microsoft.Owin.Hosting.ServerFactory.ServerFactoryAdapter.Create(IAppBuilder builder)

   at Microsoft.Owin.Hosting.Engine.HostingEngine.StartServer(StartContext context)

   at Microsoft.Owin.Hosting.Engine.HostingEngine.Start(StartContext context)

   at Microsoft.Owin.Hosting.WebApp.StartImplementation(IServiceProvider services, StartOptions options, Action1 startup)

   at Flexmonster.Proxy.FlexmonsterProxy.StartServer()

2025-08-05 16:11:49.9214 | TRACE | Flexmonster Data Speed Accelerator for Miscrosoft SSAS

2025-08-05 16:11:49.9214 | TRACE | Version 2.9.109

2025-08-05 16:11:49.9214 | TRACE | 

2025-08-05 16:11:49.9214 | TRACE | Testing connection...

2025-08-05 16:11:49.9354 | TRACE | Data Source connection [MultidimensionalProject1] - OK

 

2025-08-05 16:11:49.9354 | TRACE | Starting server...

2025-08-05 16:11:49.9354 | ERROR | Starting server - FAILED

2025-08-05 16:11:49.9435 | INFO | ! PLEASE TRY TO USE ANOTHER PORT IN flexmonster.config FILE !

2025-08-05 16:11:49.9435 | ERROR | Exception has been thrown by the target of an invocation.

   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)

   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)

   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

   at Microsoft.Owin.Hosting.ServerFactory.ServerFactoryAdapter.Create(IAppBuilder builder)

   at Microsoft.Owin.Hosting.Engine.HostingEngine.StartServer(StartContext context)

   at Microsoft.Owin.Hosting.Engine.HostingEngine.Start(StartContext context)

   at Microsoft.Owin.Hosting.WebApp.StartImplementation(IServiceProvider services, StartOptions options, Action1 startup)

   at Flexmonster.Proxy.FlexmonsterProxy.StartServer()

2025-08-05 19:10:23.4257 | TRACE | Flexmonster Data Speed Accelerator for Miscrosoft SSAS

2025-08-05 19:10:23.4257 | TRACE | Version 2.9.109

2025-08-05 19:10:23.4257 | TRACE | 

2025-08-05 19:10:23.4257 | TRACE | Testing connection...

2025-08-05 19:10:23.4323 | TRACE | Data Source connection [MultidimensionalProject1] - OK

 

2025-08-05 19:10:23.4323 | TRACE | Starting server...

2025-08-05 19:10:23.4492 | ERROR | Starting server - FAILED

2025-08-05 19:10:23.4492 | INFO | ! PLEASE TRY TO USE ANOTHER PORT IN flexmonster.config FILE !

2025-08-05 19:10:23.4492 | ERROR | Exception has been thrown by the target of an invocation.

   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)

   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)

   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

   at Microsoft.Owin.Hosting.ServerFactory.ServerFactoryAdapter.Create(IAppBuilder builder)

   at Microsoft.Owin.Hosting.Engine.HostingEngine.StartServer(StartContext context)

   at Microsoft.Owin.Hosting.Engine.HostingEngine.Start(StartContext context)

   at Microsoft.Owin.Hosting.WebApp.StartImplementation(IServiceProvider services, StartOptions options, Action`1 startup)

   at Flexmonster.Proxy.FlexmonsterProxy.StartServer()

 

Attachments:
flexmonster.log.txt

2 answers

Public
Maksym Diachenko Maksym Diachenko Flexmonster 13 hours ago

Hello,

Thank you for reaching out to us and sharing the logs.

This error occurs when the specified port is already used. Even if you have tried changing it, it is worth double-checking if the port is already used by another application or is reserved by the system. We recommend using Windows network diagnostics commands to verify that the port you are trying to set is free. If this does not work, could you please share your config file so we can examine this further?

Looking forward to hearing from you.

Best Regards,
Maksym

Public
Pablo Schor 12 hours ago

Thanks for the answer. The ports are free:

 

 

This is the config, I just changed the port number, the rest is the default that's configured when installing the program.

 

CONNECTION_STRING=Data Source=localhost

PORT=50392

HTTPS=false

CACHE_MEMORY_LIMIT=0

CACHE_ENABLED=true

GZIP=true

ALLOW_ORIGIN=*

WINDOWS_AUTH=false

 

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