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"Assembly Error: The assembly is built by a runtime newer than the currently loaded runtime, and cannot be loaded."

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While working on a customer case involving a Windows installer based package, we came across an interesting issue that was preventing the installation of the MSI package on a particular computer.

The setup failed with the following error message that we captured from a verbose log.

Error message: Assembly Error: The assembly is built by a runtime newer than the currently loaded runtime, and cannot be loaded.

Log snippet:

MSI (s) (B4:98) [00:42:12:401]: Executing op: SetTargetFolder(Folder=C:\Program Files (x86)\)

MSI (s) (B4:98) [00:42:12:401]: Executing op: SetSourceFolder(Folder=1\ProgramF\boziguka\|Program Files\Global Assembly Cache\)

MSI (s) (B4:98) [00:42:12:401]: Executing op: ChangeMedia(,MediaPrompt=Please insert the disk: [ProductName] ,MediaCabinet=Cabs.m4,BytesPerTick=32768,CopierType=2,ModuleFileName=C:\Windows\Installer\30895a.msi,,,,,IsFirstPhysicalMedia=1)

MSI (s) (B4:98) [00:42:12:401]: Executing op: AssemblyCopy(SourceName=nobzwco5.dll|CustomerPrivate.dll,SourceCabKey=CustomerPrivate.dll.A15E27FB_AF96_4B01_A086_134C0E9A760B,

DestName=CustomerPrivate.dll,Attributes=512,FileSize=108544,PerTick=32768,,VerifyMedia=1,,,,,ComponentId={20D5E9E9-8110-45C3-9320-DA65098CBBA9},IsManifest=1,,,AssemblyMode=0,)

MSI (s) (B4:98) [00:42:12:401]: Source for file 'CustomerPrivate.dll.A15E27FB_AF96_4B01_A086_134C0E9A760B' is compressed

InstallFiles: File: CustomerPrivate.dll,  Directory: ,  Size: 108544

MSI (s) (B4:98) [00:42:12:401]: Note: 1: 2360

MSI (s) (B4:98) [00:42:12:401]: Note: 1: 2360

MSI (s) (B4:98) [00:42:12:401]: Note: 1: 2360

MSI (s) (B4:58) [00:42:12:651]: Assembly Error:The assembly is built by a runtime newer than the currently loaded runtime, and cannot be loaded.

MSI (s) (B4:58) [00:42:12:667]: Note: 1: 1935 2:  3: 0x8013101B 4: IStream 5: Commit 6: 

MSI (s) (B4:98) [00:42:12:667]: Note: 1: 1304 2: CustomerPrivate.dll

DEBUG: Error 2835:  The control ErrorIcon was not found on dialog ErrorDialog

Internal Error 2835. ErrorIcon, ErrorDialog

Error 1304. Error writing to file: CustomerPrivate.dll.  Verify that you have access to that directory.

 

On further investigation, we found that we were getting the error message on a machine that only had .NET Framework 3.5 SP1.

Later, we also found that the component that is installing the DLL file had the following condition

MsiNetAssemblySupport > "2.0"

This means, the application needed a .Net runtime version greater than 2.0 to be installed prior to running this setup package.

Resolution: Installing .NET Framework 4.0 will fix this issue.

Further reference:

https://msdn.microsoft.com/en-us/library/windows/desktop/aa370325(v=vs.85).aspx

 

Content By : Keshav Jain