Visual Studio
A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.
4,687 questions
Why would MemoryMappedFile.CreateNew in Global space fail with UnauthorizedAccess even with Visual Studio being run as admin?
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Jeff Bailey
0
Reputation points
VS 2019 16.11.24 targeting Framework 4.7.2 Windows 10 Unit tests are failing on a call to MemoryMappedFile.CreateNew("Global/someName") with "System.UnauthorizedAccessException : Access to the path is denied.". Running Visual Studio as admin makes no difference, and this seems to be the only accepted cause for the problem. What else can I look at since that doesn't help? Are there separate privilidges for theUnit Test Session Manager? I can't imagine so. Is there another way for me to isolate the issue? Appreciate any info.
Visual Studio
C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
10,369 questions
Visual Studio Testing
Visual Studio Testing
Visual Studio: A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.Testing: The act or process of applying tests as a means of analysis or diagnosis.
331 questions
{count} votes
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Jeff Bailey 0 Reputation points
2023-04-20T21:21:45.1933333+00:00 Frustrating that all the formatting got stripped when it was posted. How helpful.
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RLWA32 40,946 Reputation points2023-04-20T21:47:32.53+00:00 If you intend to use the Global namespace then the name passed to CreateNew should be "Global\\someName" or @"Global\someName".
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Minxin Yu 10,361 Reputation points Microsoft Vendor2023-04-21T08:49:58.3733333+00:00 Can you provide a minimal reproducible snippet?
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Jeff Bailey 0 Reputation points
2023-04-24T20:29:25.64+00:00 I don't really know how I can create an entirely reproducible snippet. I can provide some of the actual code, but it won't be a complete package - is that helpful?
And yes, we use "Global\someName" - I was just simplifying the description. Sorry about that.
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RLWA32 40,946 Reputation points
2023-04-25T11:11:24.76+00:00 @Jeff Bailey As it stands now the situation is equivalent to saying "I tried X but it didn't work." Without a sample that reproduces the problem or sufficient specific information about the code that results in the exception there's not much that can be done besides guessing. I suggest you attempt to create a sample that reliably reproduces the problem. Many times that process will result in the Questioner identifying the cause of the problem. The ball is in your court.
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RLWA32 40,946 Reputation points
2023-04-26T13:42:00.23+00:00 My own C# Unit test under VS Community 2019 (16.11.26) successfully created shared memory in the Global namespace. Your issue was not reproduced.
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Jeff Bailey 0 Reputation points
2023-04-26T21:30:15.1366667+00:00 OK - appreciate you looking. thanks.
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RLWA32 40,946 Reputation points
2023-04-27T00:01:31.6533333+00:00 @Jeff Bailey You're welcome. Are you going to follow-up with a reproducible snippet?
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