Thu, Apr 21 2005 18:32
Last night I posted about some possible issues with Security patch MS05-019 [KB 893066] and here's a follow up you 'might' want to try.
First off..remember to call into Microsoft Product Support Services so you can make sure to get the latest info, but here's a possible workaround for the Win2k3 machines having issues with FTP: You might want to try this with VPN issues as well.
Again, I have not seen this issue in my network.
First off go find KB 120642 for more details. We're going to be setting the MTU value and this is a per adapter setting so you will need to change the parameter on each interface. With KB893066 in place and not uninstalled, set the MTU on the clients AND the server to 1400 and see if the problem resolves.
Key: /Adapter Name// /\Parameters\Tcpip
**Note **In Windows 2000 and later this value is under the following key:
Key: Tcpip\Parameters\Interfaces\ /ID for Adapter /
Value Type: REG_DWORD Number
Valid Range: 68 - /the MTU of the underlying network /
Description: This parameter overrides the default Maximum Transmission Unit (MTU) for a network interface. The MTU is the maximum packet size in bytes that the transport will transmit over the underlying network. The size includes the transport header. Note that an IP datagram may span multiple packets. Values larger than the default for the underlying network will result in the transport using the network default MTU. Values smaller than 68 will result in the tranport using an MTU of 68.
UPDATE a hotfix has now been released for this, call Microsoft Product Support Services for this FREE HOTFIX:
Network connectivity between clients and servers may not work after the installation of security update MS05-019 or Windows Server 2003 Service Pack 1:
Filed under: Security