The Routing and Remote Access service may crash when there are several connections established concurrently on a computer that is running Windows Server 2008 or Windows Server 2008 R2

Applies to: Windows Server 2008 DatacenterWindows Server 2008 EnterpriseWindows Server 2008 Standard More

Symptoms


Consider the following scenario:
  • You install the Network Policy and Access Services server role on a server that is running Windows Server 2008 or Windows Server 2008 R2. The Routing and Remote Access service is running on this server.
  • You configure the server to accept one or more of the following connections:
    • Point-to-Point Tunneling Protocol (PPTP)
    • Layer 2 Tunneling Protocol (L2TP)
    • Secure Socket Tunneling Protocol (SSTP)
  • Several clients connect to the server concurrently.
In this scenario, the Routing and Remote Access service (RRAS) may crash. When this service crashes, all existing virtual private network (VPN) connections are terminated and no new VPN connections can be established. You have to manually restart the server to recover from the issue.

Cause


This problem is caused by a timing issue in the Route Table Manager (iprtrmgr.dll) of the RRAS. When the timing issue occurs, the RRAS accesses a freed memory space. This behavior triggers an access violation exception that crashes the RRAS.

Resolution


Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

Prerequisites

To apply this hotfix, your computer must be running one of the following operating systems:
  • Windows Server 2008
  • Windows Server 2008 Service Pack 2 (SP2)
  • Windows Server 2008 R2
Additionally, you must have the Network Policy and Access Services server role installed on the computer.

Restart requirement

You must restart the Routing and Remote Access service after you install this hotfix

Registry information

You do not have to make any change to the registry.

File information

The English 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.
Windows Server 2008 file information note
The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are
listed separately. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files (attributes not listed) are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows Server 2008
File nameFile versionFile sizeDateTimePlatformSP requirement
Iprtprio.dll6.0.6001.224738,19216-Jul-200916:19x86SP1
Iprtrmgr.dll6.0.6001.22473252,41616-Jul-200916:19x86SP1
Mprdim.dll6.0.6001.2247368,60816-Jul-200916:19x86SP1
Rasmigplugin.dll7.2.6001.22473115,20016-Jul-200916:21x86SP1
Rtm.dll6.0.6001.22473114,68816-Jul-200916:21x86SP1
Iprtprio.dll6.0.6002.221758,19216-Jul-200914:15x86SP2
Iprtrmgr.dll6.0.6002.22175252,41616-Jul-200914:15x86SP2
Mprdim.dll6.0.6002.2217568,60816-Jul-200914:15x86SP2
Rasmigplugin.dll7.2.6002.22175115,20016-Jul-200914:15x86SP2
Rtm.dll6.0.6002.22175114,68816-Jul-200914:15x86SP2
For all supported x64-based versions of Windows Server 2008
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
Iprtprio.dll6.0.6001.224739,72816-Jul-200916:40x64SP1Not Applicable
Iprtrmgr.dll6.0.6001.22473279,04016-Jul-200916:40x64SP1Not Applicable
Mprdim.dll6.0.6001.2247387,55216-Jul-200916:41x64SP1Not Applicable
Rasmigplugin.dll7.2.6001.22473153,60016-Jul-200916:42x64SP1Not Applicable
Rtm.dll6.0.6001.22473137,72816-Jul-200916:42x64SP1Not Applicable
Iprtprio.dll6.0.6001.224738,19216-Jul-200916:19x86SP1WOW
Iprtrmgr.dll6.0.6001.22473252,41616-Jul-200916:19x86SP1WOW
Mprdim.dll6.0.6001.2247368,60816-Jul-200916:19x86SP1WOW
Rasmigplugin.dll7.2.6001.22473115,20016-Jul-200916:21x86SP1WOW
Rtm.dll6.0.6001.22473114,68816-Jul-200916:21x86SP1WOW
Iprtprio.dll6.0.6002.221759,72816-Jul-200916:16x64SP2Not Applicable
Iprtrmgr.dll6.0.6002.22175279,04016-Jul-200916:16x64SP2Not Applicable
Mprdim.dll6.0.6002.2217587,55216-Jul-200916:16x64SP2Not Applicable
Rasmigplugin.dll7.2.6002.22175153,60016-Jul-200916:18x64SP2Not Applicable
Rtm.dll6.0.6002.22175137,72816-Jul-200916:18x64SP2Not Applicable
Iprtprio.dll6.0.6002.221758,19216-Jul-200914:15x86SP2WOW
Iprtrmgr.dll6.0.6002.22175252,41616-Jul-200914:15x86SP2WOW
Mprdim.dll6.0.6002.2217568,60816-Jul-200914:15x86SP2WOW
Rasmigplugin.dll7.2.6002.22175115,20016-Jul-200914:15x86SP2WOW
Rtm.dll6.0.6002.22175114,68816-Jul-200914:15x86SP2WOW
Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x64-based versions of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Iprtrmgr.dll6.1.7600.20776281,08810-Aug-201005:16x64
Pbkmigr-mig.dll7.2.7600.2077657,85610-Aug-201005:19x64
Rasapi-dl.manNot Applicable2,11817-Jan-201020:53Not Applicable
Rasapi-repl.manNot Applicable5,69817-Jan-201020:53Not Applicable
Rasbase-rassstp-repl.manNot Applicable3,50717-Jan-201020:53Not Applicable
Rasbase-repl.manNot Applicable5,93317-Jan-201020:53Not Applicable
Rasddm-repl.manNot Applicable2,51317-Jan-201020:53Not Applicable
Rasmanservice-dl.manNot Applicable1,70417-Jan-201020:53Not Applicable
Rasmanservice-repl.manNot Applicable2,23217-Jan-201020:53Not Applicable
Rasmigplugin-dl-mig.dll7.2.7600.20776217,08810-Aug-201005:19x64
Rasmigplugin-mig.dll7.2.7600.20776217,08810-Aug-201005:19x64
Rasmigplugin.dll7.2.7600.20776217,08810-Aug-201005:19x64
Rasppp-repl.manNot Applicable2,82517-Jan-201020:53Not Applicable
Rasrqs-repl.manNot Applicable1,79217-Jan-201020:53Not Applicable
Rasserver-repl.manNot Applicable25,44917-Jan-201020:53Not Applicable
Rasservermigplugin-dl.manNot Applicable16,17417-Jan-201020:53Not Applicable
Rasserveroc-dl.manNot Applicable1,65917-Jan-201020:53Not Applicable
Iprtrmgr.dll6.1.7600.20776271,36010-Aug-201004:27x86
Pbkmigr-mig.dll7.2.7600.2077667,58410-Aug-201004:29x86
Rasapi-dl.manNot Applicable2,11817-Jan-201020:54Not Applicable
Rasapi-repl.manNot Applicable5,69817-Jan-201020:54Not Applicable
Rasbase-rassstp-repl.manNot Applicable3,50717-Jan-201020:54Not Applicable
Rasbase-repl.manNot Applicable5,93317-Jan-201020:54Not Applicable
Rasddm-repl.manNot Applicable2,51317-Jan-201020:54Not Applicable
Rasmanservice-dl.manNot Applicable1,70417-Jan-201020:54Not Applicable
Rasmanservice-repl.manNot Applicable2,23217-Jan-201020:54Not Applicable
Rasmigplugin-dl-mig.dll7.2.7600.20776172,54410-Aug-201004:29x86
Rasmigplugin-mig.dll7.2.7600.20776172,54410-Aug-201004:29x86
Rasmigplugin.dll7.2.7600.20776172,54410-Aug-201004:29x86
Rasppp-repl.manNot Applicable2,82517-Jan-201020:54Not Applicable
Rasrqs-repl.manNot Applicable1,79217-Jan-201020:54Not Applicable
Rasserver-repl.manNot Applicable25,44917-Jan-201020:54Not Applicable
Rasservermigplugin-dl.manNot Applicable16,17417-Jan-201020:54Not Applicable
Rasserveroc-dl.manNot Applicable1,65917-Jan-201020:54Not Applicable
For all supported IA-64-based versions of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Iprtrmgr.dll6.1.7600.20776591,36010-Aug-201004:03IA-64
Pbkmigr-mig.dll7.2.7600.20776127,48810-Aug-201004:06IA-64
Rasapi-dl.manNot Applicable2,11817-Jan-201020:53Not Applicable
Rasapi-repl.manNot Applicable5,69817-Jan-201020:53Not Applicable
Rasbase-rassstp-repl.manNot Applicable3,50717-Jan-201020:53Not Applicable
Rasbase-repl.manNot Applicable5,93317-Jan-201020:53Not Applicable
Rasddm-repl.manNot Applicable2,51317-Jan-201020:53Not Applicable
Rasmanservice-dl.manNot Applicable1,70417-Jan-201020:53Not Applicable
Rasmanservice-repl.manNot Applicable2,23217-Jan-201020:53Not Applicable
Rasmigplugin-dl-mig.dll7.2.7600.20776387,07210-Aug-201004:06IA-64
Rasmigplugin-mig.dll7.2.7600.20776387,07210-Aug-201004:06IA-64
Rasmigplugin.dll7.2.7600.20776387,07210-Aug-201004:06IA-64
Rasppp-repl.manNot Applicable2,82517-Jan-201020:53Not Applicable
Rasrqs-repl.manNot Applicable1,79217-Jan-201020:53Not Applicable
Rasserver-repl.manNot Applicable25,44917-Jan-201020:53Not Applicable
Rasservermigplugin-dl.manNot Applicable16,17417-Jan-201020:53Not Applicable
Rasserveroc-dl.manNot Applicable1,65917-Jan-201020:53Not Applicable
Iprtrmgr.dll6.1.7600.20776271,36010-Aug-201004:27x86
Pbkmigr-mig.dll7.2.7600.2077667,58410-Aug-201004:29x86
Rasapi-dl.manNot Applicable2,11817-Jan-201020:54Not Applicable
Rasapi-repl.manNot Applicable5,69817-Jan-201020:54Not Applicable
Rasbase-rassstp-repl.manNot Applicable3,50717-Jan-201020:54Not Applicable
Rasbase-repl.manNot Applicable5,93317-Jan-201020:54Not Applicable
Rasddm-repl.manNot Applicable2,51317-Jan-201020:54Not Applicable
Rasmanservice-dl.manNot Applicable1,70417-Jan-201020:54Not Applicable
Rasmanservice-repl.manNot Applicable2,23217-Jan-201020:54Not Applicable
Rasmigplugin-dl-mig.dll7.2.7600.20776172,54410-Aug-201004:29x86
Rasmigplugin-mig.dll7.2.7600.20776172,54410-Aug-201004:29x86
Rasmigplugin.dll7.2.7600.20776172,54410-Aug-201004:29x86
Rasppp-repl.manNot Applicable2,82517-Jan-201020:54Not Applicable
Rasrqs-repl.manNot Applicable1,79217-Jan-201020:54Not Applicable
Rasserver-repl.manNot Applicable25,44917-Jan-201020:54Not Applicable
Rasservermigplugin-dl.manNot Applicable16,17417-Jan-201020:54Not Applicable
Rasserveroc-dl.manNot Applicable1,65917-Jan-201020:54Not Applicable

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information


For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates


Additional file information for Windows Server 2008

Additional files for all supported x86-based versions of Windows Server 2008

File nameFile versionFile sizeDateTimePlatform
Package_for_kb973572_server_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot Applicable1,42517-Jul-200905:01Not Applicable
Package_for_kb973572_server_1~31bf3856ad364e35~x86~~6.0.1.0.mumNot Applicable1,36417-Jul-200905:01Not Applicable
Package_for_kb973572_server~31bf3856ad364e35~x86~~6.0.1.0.mumNot Applicable1,71317-Jul-200905:01Not Applicable
X86_microsoft-windows-rasserver_31bf3856ad364e35_6.0.6001.22473_none_abea2d3e812087ea.manifestNot Applicable72,21316-Jul-200917:56Not Applicable
X86_microsoft-windows-rasserver_31bf3856ad364e35_6.0.6002.22175_none_add29fba7e450fbc.manifestNot Applicable72,21316-Jul-200917:35Not Applicable

Additional files for all supported x64-based versions of Windows Server 2008

File nameFile versionFile sizeDateTimePlatform
Amd64_microsoft-windows-rasserver_31bf3856ad364e35_6.0.6001.22473_none_0808c8c2397df920.manifestNot Applicable72,27516-Jul-200918:18Not Applicable
Amd64_microsoft-windows-rasserver_31bf3856ad364e35_6.0.6002.22175_none_09f13b3e36a280f2.manifestNot Applicable72,27516-Jul-200917:34Not Applicable
Package_for_kb973572_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mumNot Applicable1,43317-Jul-200905:01Not Applicable
Package_for_kb973572_server_1~31bf3856ad364e35~amd64~~6.0.1.0.mumNot Applicable1,37217-Jul-200905:01Not Applicable
Package_for_kb973572_server~31bf3856ad364e35~amd64~~6.0.1.0.mumNot Applicable1,72317-Jul-200905:01Not Applicable
Wow64_microsoft-windows-rasserver_31bf3856ad364e35_6.0.6001.22473_none_125d73146ddebb1b.manifestNot Applicable72,05816-Jul-200917:50Not Applicable
Wow64_microsoft-windows-rasserver_31bf3856ad364e35_6.0.6002.22175_none_1445e5906b0342ed.manifestNot Applicable72,05816-Jul-200917:29Not Applicable

Additional file information for Windows Server 2008 R2

Additional files for all supported x64-based versions of Windows Server 2008 R2
File nameAmd64_ba2f5405af5c268afa9625d78e8f3214_31bf3856ad364e35_6.1.7600.20776_none_2e885750d826de67.manifest
File versionNot Applicable
File size1,044
Date (UTC)10-Aug-2010
Time (UTC)08:32
PlatformNot Applicable
File nameAmd64_microsoft-windows-rasserver_31bf3856ad364e35_6.1.7600.20776_none_08339db19a927c5b.manifest
File versionNot Applicable
File size99,296
Date (UTC)10-Aug-2010
Time (UTC)08:41
PlatformNot Applicable
File namePackage_1_for_kb973572~31bf3856ad364e35~amd64~~6.1.1.0.mum
File versionNot Applicable
File size2,047
Date (UTC)10-Aug-2010
Time (UTC)08:32
PlatformNot Applicable
File namePackage_2_for_kb973572~31bf3856ad364e35~amd64~~6.1.1.0.mum
File versionNot Applicable
File size2,010
Date (UTC)10-Aug-2010
Time (UTC)08:32
PlatformNot Applicable
File namePackage_for_kb973572_rtm~31bf3856ad364e35~amd64~~6.1.1.0.mum
File versionNot Applicable
File size1,927
Date (UTC)10-Aug-2010
Time (UTC)08:32
PlatformNot Applicable
File nameWow64_microsoft-windows-rasserver_31bf3856ad364e35_6.1.7600.20776_none_12884803cef33e56.manifest
File versionNot Applicable
File size93,313
Date (UTC)10-Aug-2010
Time (UTC)08:41
PlatformNot Applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
File nameIa64_bf2ced6a84f8e22cd4f4d7fbbb1d5d3a_31bf3856ad364e35_6.1.7600.20776_none_7924be4ed185bd05.manifest
File versionNot Applicable
File size1,042
Date (UTC)10-Aug-2010
Time (UTC)08:32
PlatformNot Applicable
File nameIa64_microsoft-windows-rasserver_31bf3856ad364e35_6.1.7600.20776_none_ac16a623e2331421.manifest
File versionNot Applicable
File size99,293
Date (UTC)10-Aug-2010
Time (UTC)08:32
PlatformNot Applicable
File namePackage_1_for_kb973572~31bf3856ad364e35~ia64~~6.1.1.0.mum
File versionNot Applicable
File size2,042
Date (UTC)10-Aug-2010
Time (UTC)08:32
PlatformNot Applicable
File namePackage_for_kb973572_rtm~31bf3856ad364e35~ia64~~6.1.1.0.mum
File versionNot Applicable
File size1,462
Date (UTC)10-Aug-2010
Time (UTC)08:32
PlatformNot Applicable
File nameWow64_microsoft-windows-rasserver_31bf3856ad364e35_6.1.7600.20776_none_12884803cef33e56.manifest
File versionNot Applicable
File size93,313
Date (UTC)10-Aug-2010
Time (UTC)08:32
PlatformNot Applicable