An update is available for the .NET Framework 4.5 in Windows 7, Windows 7 SP1, Windows Server 2008 R2, Windows Server 2008 R2 SP1, Windows Server 2008 SP2, and Windows Vista SP2

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Article ID: 2748645 - View products that this article applies to.
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Introduction

This article describes a hotfix for the Microsoft .NET Framework 4.5 that resolves two issues in the following operating systems:
  • Windows 7
  • Windows 7 Service Pack 1 (SP1)
  • Windows Server 2008 R2
  • Windows Server 2008 R2 Service Pack 1 (SP1)
  • Windows Server 2008 Service Pack 2 (SP2)
  • Windows Vista Service Pack 2 (SP2)

Issue 1

Assume that you upgrade an earlier version of the .NET Framework to the .NET Framework 4.5 on a computer. When you use some third-party controls, you may receive a System.Security.VerificationException exception. This issue occurs if the following conditions are true:
  • The third-party controls use the generic types.
  • The CLR verifier is enabled by declaring an assembly that is marked as security-transparent.

Cause 1

This issue occurs because an update is made in the Just-In-Time (JIT) compiler in the .NET Framework 4.5.

Issue 2

In rare circumstances, the Advanced RISC Machines (ARM) devices crash during garbage collection.

More information

Download information

To download the update, go to the following Microsoft Download Center website:

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Download
Download the x86-based version of the package now.
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Download
Download the x64-based version of the package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Command-line switches for this update

For more information about command-line switches for Windows Installer, go to the following Microsoft Developer Network (MSDN) website:
General information about command-line switches for Windows Installer
For more information about Windows Installer, go to the following MSDN website:
General information about Windows Installer

Prerequisites

To install this update, you must have the following software installed: Windows Installer 3.1 or a later version of Windows Installer

Note To obtain the latest version of Windows Installer, go to the following Microsoft website:
Download information for Windows Installer Redistributable

Restart requirement

After you apply this update, you do not have to restart the computer unless the files that are being updated are locked or are being used.

File information

The global version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
For all supported 32-bit versions of the .NET Framework 4.5 for LDR service branch
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File nameFile versionFile sizeDateTime
clrjit.dll4.0.30319.19008451,54424-Aug-201220:47
peverify.dll4.0.30319.19008167,90424-Aug-201220:47
For all supported 32-bit versions of the .NET Framework 4.5 for GDR service branch
Collapse this tableExpand this table
File nameFile versionFile sizeDateTime
clrjit.dll4.0.30319.18009451,54424-Aug-201217:54
peverify.dll4.0.30319.18009167,90424-Aug-201217:54
For all supported 64-bit versions of the .NET Framework 4.5 for LDR service branch
Collapse this tableExpand this table
File nameFile versionFile sizeDateTime
clrjit.dll4.0.30319.190081,236,44024-Aug-201221:02
clrjit.dll4.0.30319.19008451,54424-Aug-201220:47
peverify.dll4.0.30319.19008228,83224-Aug-201221:02
peverify.dll4.0.30319.19008167,90424-Aug-201220:47
For all supported 64-bit versions of the .NET Framework 4.5 for GDR service branch
Collapse this tableExpand this table
File nameFile versionFile sizeDateTime
clrjit.dll4.0.30319.180091,236,44024-Aug-201218:09
clrjit.dll4.0.30319.18009451,54424-Aug-201217:54
peverify.dll4.0.30319.18009228,83224-Aug-201218:09
peverify.dll4.0.30319.18009167,90424-Aug-201217:54

Properties

Article ID: 2748645 - Last Review: October 12, 2012 - Revision: 2.0
Applies to
  • Microsoft .NET Framework 4.5 Release Candidate
Keywords: 
kbfix atdownload kbexpertiseadvanced kbsurveynew KB2748645

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