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This article contains a copy of the Point to Point Tunneling Protocol (PPTP) Performance Update for Microsoft Windows NT Server and Workstation version 4.0 Release Notes. For your convenience, the English version of this post-SP3 hotfix has been posted to the following Internet location. However, Microsoft recommends that you install Windows NT 4.0 Service Pack 4 to correct this problem.
Point to Point Tunneling Protocol (PPTP) performance and security upgrade for Microsoft Windows NT Server 4.0 and Microsoft Windows NT Workstation release notesPlease use this document to address questions that may arise during the installation of this PPTP Performance & Security Upgrade for Microsoft Windows NT 4.0 Server and Workstation.
Installation informationMicrosoft has made improvements to the native Virtual Private Networking (VPN) capabilities of Windows client and server that significantly improve the performance and security PPTP-based VPN connections via the Internet for Windows NT Server and Windows NT Workstation version 4.0.
This upgrade should be applied to both Windows NT Servers and Windows NT Workstations version 4.0. Service Pack 3 for Windows NT 4.0 must also be installed before applying this update.
Note Windows NT Servers running Routing and Remote Access Service (RRAS) must first apply this Windows NT PPTP performance upgrade followed by the RRAS Hotfix 3.0 to benefit from the upgrade (it is important not to reboot your machine in-between installations of the NT PPTP upgrade & the Routing and Remote Access Service upgrade).
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/189594/ )RRAS uUpgrade for WinNT Server 4.0 Hotfix Pack 3.0 release notes
This upgrade is packaged in an auto-install format. It is recommended that you first copy the upgrade to a temporary directory, and then double-click the executable name or type the executable name pptpfixi.exe for x86 or pptpfixa.exe for alpha at a command prompt to install.
The files can also be extracted from the Upgrade pack without installing them. To do this, copy the Upgrade to a temporary directory, and type pptpfixi /x or pptpfixa /x at a command prompt. After extracting the files, the Upgrade can be installed by typing hotfix at a command prompt.
To uninstall this upgrade, extract the files to a directory using the "/x" command as mentioned above and then type HOTFIX -Y from the same directory you copied the files to.
Output of HOTFIX -?:
HOTFIX [-y] [-f] [-n] [-z] [-q] [-m] [-l] -y Perform uninstall (only with -m or -q) -f Force apps closed at shutdown -n Do not create uninstall directory -z Do not reboot when update completes -q Quiet Mode -- no user interface -m Unattended mode -l List installed hotfixes
Security features in this upgradeThis upgrade provides several RAS/PPTP security enhancements for Microsoft Windows NT 4.0. This upgrade also includes the performance improvements and other fixes that were included in previously released PPTP hotfixes for Windows NT Service Pack 3.
Fixes and features included in the 2.0 Hotfix
PPTP performance issues that are addressed in this update
Remote Access Service and PPTP issues
Other Windows NT issues that are addressed in this update
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Article ID: 189595 - Last Review: October 9, 2013 - Revision: 4.2