Version history of the CLR 2.0
In this article
[update 13/3/12 – added 5719]
[update Oct & Nov 2011 – various additions as I find them]
[update 23/9/11 added MS11-044 and MS11-028]
[update 31/5/11 added .5669]
[update 7/4/11 added a load of fixes that I didn’t have listed]
[update 29/12/9 added lots of post SP2 hotfixes, MS09-061 versions and added the note on dual-branch servicing]
[update 8/10/9 added Windows 7 versions and the post-3.5 SP1 app compat update]
[update 5/11/8 added .NET 3.5 SP1, various hotfixes and additional note about "what is the CLR"]
[update 20/11/7 added .NET 2.0 SP1]
[update 15/11/7 added 4 new recent fixes]
Following on from my post about ASP.NET 2.0 fixes , summarised below are the Common Language Runtime (CLR) 2.0 major releases and hotfixes, in version number order. Additional note (5/11/8): the CLR is not synonymous with the .NET Framework as a whole. The CLR is the core runtime engine, including the JIT compiler, metadata management, threadpool, garbage collector etc. The .NET Framework includes the CLR, the base class libraries (BCL), ASP.NET, WCF, WPF and lots more. The below list only relates to CLR fixes.
ASP.NET is a hungry consumer of the CLR services such as threadpool, garbage collection etc. Therefore many of the problems we see customers experience in production ASP.NET applications are the result of issues in the CLR - many of which we have already fixed. So it is always worth considering what patches you currently have installed when something weird happens.
Please read the caveats at the start of the ASP.NET 2.0 fixes post before proceeding.
Following .NET Framework 2.0 SP2, the capability for .NET Framework 2.0 fix packages to carry two different types of fix was introduced. This is referred to as dual branch servicing and is described in this article:
Dual Branch Servicing for the .NET Framework 2.0 Service Pack 2, the .NET Framework 3.0 Service Pack 2, and the .NET Framework 3.5 Service Pack 1
The first occasion I am aware of this capability actually being used is in the MS09-061 release . Therefore it is no longer the case that if the version of mscorwks.dll that you have on your system is higher than the one mentioned in a particular hotfix article that you automatically have the fix described in that article. It depends on what you had on your system prior to installing the dual-branch hotfix package. If you already had a hotfix version of those files installed you would get the LDR version. If you didn’t then you would get the GDR version.
Version 2.0.50727. xxxx
KB
Description
5719
2669522
FIX: Access violation when you use the ICryptoTransform.TransformFinalBlock API to perform a cryptographic operation in a .NET Framework 3.5-based application
5692
2598773
FIX: "Fatal Execution Engine Error" when you call the String.EndWith method in the .NET Framework 2.0 if the string parameter of the method begins with an expansion character
5681
2572075
MS11-078: Description of the security update for the .NET Framework 2.0 SP2 for Windows Vista SP2 and Windows Server 2008 SP2: October 11, 2011 (LDR Version)
5669
2545756
FIX: New Rupee symbol is not displayed when you run a .NET Framework 2.0-based application to obtain the symbol if the user locale is not an Indian locale
5662
2518864 2518869
MS11-044: Description of the security update for the .NET Framework 3.5 Service Pack 1 and .NET Framework 2.0 Service Pack 2 on Windows XP Service Pack 3 and on Windows Server 2003 Service Pack 2: June 14, 2011 and MS11-044: Description of the security update for the .NET Framework 3.5.1 on Windows 7 Service Pack 1 and on Windows Server 2008 R2 Service Pack 1: June 14, 2011 (LDR version)
5656
2504603
FIX: SQL Server process that uses the.NET Framework 2.0 does not make any progress during a garbage collection while CPU usage is high
5653
2446704
MS11-028: Description of the security update for the .NET Framework 3.5 Service Pack 1 and the .NET Framework 2.0 Service Pack 2 on Windows Server 2003 and Windows XP: April 12, 2011 (LDR version)
5651
2315412
FIX: Access violation may occur when you run a .NET Framework 2.0 SP2-based application that calls a mixed assembly that is domain-neutral
5446
2518869
MS11-044: Description of the security update for the .NET Framework 3.5.1 on Windows 7 Service Pack 1 and on Windows Server 2008 R2 Service Pack 1: June 14, 2011 (GDR version on Windows 7 SP1 and Windows Server 2008 R2 SP1)
5444
2446710
MS11-028: Description of the security update for the .NET Framework 3.5.1 on Windows 7 Service Pack 1 and on Windows Server 2008 R2 Service Pack 1: April 12, 2011 (GDR version)
5066
2461007
System.ObjectDisposedException may occur when you run a .NET Framework 2.0-based application on a server that has the Chinese (Simplified) or Chinese (Traditional) language pack installed
5060
2450950
Error 0x80070002 in the CoCreateInstance function when you use registration-free COM activation to load a COM object in a .NET Framework 2.0 SP2-based or .NET Framework 3.5 SP1- based application
5058
2260913
FIX: Updating the .NET Framework may fail and some files in the GAC may be deleted
5021
2282372
"Loading this assembly would produce a different grant set from other instances” error message when you run a .NET Framework 2.0-based application on a computer that is running a 64-bit version of Windows
5018
983590
MS10-060: Description of the security update for the Microsoft .NET Framework 3.5 in Windows 7 and in Windows Server 2008 R2: August 10, 2010 (LDR Version)
5008 (download )
981574
The splash screen stays open longer than usual when you try to start Excel on a computer that has the .NET Framework 3.5 SP1 installed
4952
983590
MS10-060: Description of the security update for the Microsoft .NET Framework 3.5 in Windows 7 and in Windows Server 2008 R2: August 10, 2010 (GDR Version)
4927
n/a
Windows 7 and Windows Server 2008 R2 RTM
4918
n/a
Windows 7 RC1
4474
2276255
FIX: An application that is based on the .NET Framework 2.0 stops responding on a computer that has more than 32 processors, and the .NET Framework 2.0 Service Pack 2 or the .NET Framework 3.5 Service Pack 1 is installed
4455
983583
MS10-060: Description of the security update for the .NET Framework 3.5 Service Pack 1 and .NET Framework 2.0 Service Pack 2 on Windows Server 2003 and Windows XP: August 10, 2010 (LDR Version)
4454
983589
MS10-060: Description of the security update for the .NET Framework 2.0 Service Pack 2 and the .NET Framework 3.5 Service Pack 1 on Windows Vista Service Pack 2 and on Windows Server 2008 Service Pack 2: August 10, 2010
4448
981266
Referenced assemblies of a .NET Framework 2.0-based 32-bit application are loaded multiple times
4447
982318
FIX: A .NET Framework 2.0-based application that uses Remoting objects crashes and closes unexpectedly
4446
981878
FIX: A dump file is not generated for a .NET Framework 2.0-based application after the application closes
4431 (download )
979744
A .NET Framework 2.0-based Multi-AppDomain application stops responding when you run the application
4428
978254
FIX: The CLR cannot start the Dr. Watson tool to report errors or to generate dump files when a .NET Framework 2.0-based application process runs in an impersonated user context
4428
978249
FIX: You receive a FatalExecutionEngineError exception when a domain neutral assembly is unloaded and a debugger that uses Just My Code detaches from a .NET Framework 2.0-based process
4417
976898
FIX: After you use the ThreadPool.SetMinThreads method in the Microsoft .NET Framework 3.5, threads maintained by the thread pool do not work as expected
4413
976569
Description of the .NET Framework 2.0 SP2 forward compatibility update for Windows XP and for Windows Server 2003
4408 (download )
975954
FIX: When you run a .NET Framework 2.0-based application, a System.AccessViolationException exception occurs, or a dead-lock occurs on two threads in an application domain
4400
974470
MS09-061: Description of the security update for the Microsoft .NET Framework 2.0 Service Pack 2 on Windows Vista Service Pack 2 and Windows Server 2008 Service Pack 2: October 13, 2009
4216
2572075
MS11-078: Description of the security update for the .NET Framework 2.0 SP2 for Windows Vista SP2 and Windows Server 2008 SP2: October 11, 2011 (GDR Version)
4214
2518866
MS11-044: Description of the security update for the .NET Framework 3.5 Service Pack 1, Windows Vista Service Pack 2 and Windows Server 2008 Service Pack 2: June 14, 2011 (GDR Version)
4206
983589
MS10-060: Description of the security update for the .NET Framework 2.0 Service Pack 2 and the .NET Framework 3.5 Service Pack 1 on Windows Vista Service Pack 2 and on Windows Server 2008 Service Pack 2: August 10, 2010 (GDR Version)
4200
974470
MS09-061: Description of the security update for the Microsoft .NET Framework 2.0 Service Pack 2 on Windows Vista Service Pack 2 and Windows Server 2008 Service Pack 2: October 13, 2009
4062
974417
MS09-061: Description of the security update for the Microsoft .NET Framework 2.0 Service Pack 2 and the Microsoft .NET Framework 3.5 Service Pack 1: October 13, 2009 (LDR version)
4062
974065
FIX: A System.InsufficientMemoryException exception occurs when you are running a .NET Framework 2.0-based application
4062
974372
FIX: The top of the call stack shows the mscorwks!WKS::gc_heap::mark_object_simple function after an exception occurs in a .NET Framework 2.0-based application
4060
974168
FIX: An access violation occurs when you pass structs as parameters through remoting or reflection in 64-bit applications in the .NET Framework 3.5 SP1 or the .NET Framework 2.0 SP2
4051
972259
FIX: The threads of a .NET Framework 2.0 SP2-based program pause for a very long time when concurrent garbage collection is enabled
4051
972848
FIX: A minidump file generation is slow and the size of the file is larger than expected when the information that the file collects is not of the MiniDumpWithFullMemory type in the .NET Framework 2.0
4044
970924
FIX: The performance of applications that use the CreateType method decrease as you add more type objects to a dynamic assembly module in the .NET Framework 2.0 SP2
4043
971988
FIX: The CPU usage increases significantly when you run a .NET Framework 2.0-based Multi-AppDomain application that uses objects whose finalizers start ThreadPool methods
4036
971030
FIX: An access violation occurs when you run a .NET Framework 2.0-based application that has a virtual call the IList<T>, IEnumerable<T>, or ICollection<T> interface in an LCG method
4034
970510
FIX: A TypeLoadException exception occurs when you run a .NET Framework 3.5 SP1-based application
4022
968760
A managed application has a high number of thread handles and of event handles in the Microsoft .NET Framework 2.0
4018
968249
FIX: An incorrect instance size is generated when you use the Type Library Exporter to generate a type library from a CLR assembly in the .NET Framework 2.0 Service Pack 2
4016
967812
A hotfix is available that updates some properties in the System.Globalization.RegionInfo class for Slovakia, for Slovenia, and for Turkey
4013
967615
FIX: A .NET Framework 2.0 SP2-based application or a .NET Framework 3.5 SP1-based application does not correctly dispose of safe handle objects that were created by the WindowsIdentity object
4005
963676
FIX: The CLR fails with a fatal execution engine error, and a crash occurs when you run an application by using the .NET Framework 2.0 Service Pack 2
4001
961881
FIX: An access violation occurs when you start an application that runs on the CLR
4001
961870
FIX: A memory leak occurs when you run an application that requires the CLR to load a mixed-mode assembly in the .NET Framework 2.0 Service Pack 2
4001
961885
FIX: You receive an Access Violation error when you run a CLR application that calls the XslCompiledTransform.Transform method
3623