aspnet_state.exe is a application which is probably legit. So, if aspnet_state.exe is on your PC, it is probably ok, and will NOT cause problems. Even if your system is virus-free, it is still recommended to use a well-known antivirus with a good track record, in order to yourself yourself against threats.
Usually, the default filename and directory where this application is stored is
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_state.exe.
The MD5 fingerprint for this executable is a7bc8002c5a5de2c781203076aaf0dc5.
This program is set up as a Windows service. This means it operates on your PC in background, usually without showing any user interface to you. Most Windows services are useful programs, which provide useful functions to other programs or to the Windows Operating System.
This application runs in 32-bit mode. It can not benefit of the full power of nowadays' PC chips. This ordinarily happens because the publishers did not upgrade it to 64-bit code.
The description written in the file is Microsoft ASP.NET State Server.
File version stored as a property 4.7.2558.0 built by: NET471REL1.
Company Microsoft Corporation.
Intellectual property rights notice © Microsoft Corporation. All rights reserved..
aspnet_state.exe is digitally signed. Today the large majority of clean programs are digitally signed.
The digital signature attached to aspnet_state.exe checks out perfectly. This is most likely a clean, ok program.
Digitally signed by: Microsoft Corporation
Certificate's issuer name: Microsoft Code Signing PCA
It has an uninstall string in registry, which is a good sign. si are uninstall.