When using .NET 8.0 for system deployment, there was a problem when operating shared memory. When I am with someone when .NET Framework programs interact with data through shared memory, when I use IIS hosting programs, I cannot perform read and write operations. However, when I directly start exe or use dotnet run .dll, I can achieve read and write functions. In IIS, I tried to switch identifiers, but none of them worked. I consulted various experts for solutions.