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Editorial Team
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Asked: 2026-05-30T15:12:28+00:00

I tried to start my winforms application without the debugger and attach Visual studio

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I tried to start my winforms application without the debugger and attach Visual studio debugger to the process afterwards. At this point my application process shows up as “T-SQL and 4.0 x86”. Searching on google I see that T-SQL is regarding Microsoft SQL Server. I use a third party dll and linq sequences but i dont use any SQL server. I also use the GeckoFX Browser in my application.

When i navigate in Debugger Attach Process there is a message SPAM with content : 0x000006BA: RPC server is unavailable

  1. How come my app is tagged as a T-SQL app?
  2. How can i find if a third party dll uses T-SQL ?
  3. What does “0x000006BA: RPC server is unavailable” means?
  4. How can I get the debugger to correctly attach to my process?

I checked in the Windows Services and RPC server is started.

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1 Answer

  1. Editorial Team
    1. This is always shown — even if your application does nothing with MS SQL Server.
    2. “RPC server” message is not a service name — it means that server you try to make call to is unavailable. I guess VS debugger uses RPC (that is btw remote procedure call) to connect somewhere for its needs.
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