Monday, February 20, 2012

How to turn off IPv6 router discovery?

My recommendation for servers and workstations that do not need "Stateless Autoconfiguration" is to turn off Router Discovery. You can turn of Router Discovery using netsh. For example, if you want to turn off Router Discovery on Local Area Connection you can type in the following statement from elevated command prompt:
netsh int ipv6 set int "Local Area Connection" routerdiscovery=disabled
To check other interface parameters including Router Discovery type in:
netsh int ipv6 show int "Local Area Connection"
And you'll have to receive something like this:




Monday, February 13, 2012

Upgrade Kemp VLM (hyper v) firmware from 5.1.74 to 6.0.28

If you try to upgrade Hyper-V hosted Kemp nlb vm from firmware version 5.1.74 to 6.0.28, you may experience system hung during reboot :


In order to fix this you'll have to offer Hyper V integration services to the nlb vm, since default hyper v configuration for the VLM with firmware 5 none of the integration services were offered to the VLM. In my case after offering all of the integration services, problem was successfully closed.

Friday, February 3, 2012

The 'Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine

In my case the server hosting the web application was IIS 7.5, and this application was trying to collect some data from excel spreadsheet, but there was an exception message:
The 'Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine.
In order to fix this error I have opened advanced setting of the IIS application pool of affected web application and changed the property of "Enable 32-bit Applications" to True.


 After changing this property, problem has been successfully solved.

Wednesday, February 1, 2012

Restart is required for installation of Forefront Endpoint Protection 2010 to continue

You may experience following error messages when you try to install Microsoft Forefront Endpoint Protection 2010 :



After rebooting the server, installation of FEP 2010 will not continue and will request from you to reboot the server again in endless loop. You can avoid this behavior by first copying the content of the PendingFileRenameOperations key from HKLM\SYSTEM\CurrentControlSet\Control\Session Manager and then remove the content of the suggested PendingFileRenameOperations key. Save the key, and restart the setup of the FEP 2010, it should continue with installation.

EMC Networker backup client failed to backup data on server installed with Microsoft Forefront Endpoint Protection 2010

You may experience following error when you try to backup server with EMC Networker and installed Microsoft Forefront Endpoint Protection 2010 :

ERROR: VSS failed to initialize for directives, error=0x80042308: The specified object does not exist.
The reason for this error is that Forefront VSS writer is missing some of the VSS components that Networker queries before starting backup. Solution for this behavior is to disable FEP 2010 VSS writer. This can be done by commenting FepWriterManager part in AgentComponents.xml used by FEP 2010. More on how this can be accomplished on http://support.microsoft.com/kb/2570654/en-us .