Server 2008 Error: The IP address  you have entered for this network adapter is already assigned to another adapter Name of adapter. Name of adapter is hidden from the network and Dial-up Connections folder because it is not physically in the computer or is a legacy adapter that is not working. If the same address is assigned to both adapters and they become active, only one of them will use this address. This may result in incorrect system configuration. Do you want to enter a different IP address for this adapter in the list of IP addresses in the advanced dialog box?

Solution:

1.Run, "set devmgr_show_nonpresent_devices=1" from command line
2.Start "Device Manager", Right click and choose "Show Hidden Devices"
3.Browse to Network Adapters, then remove all the old adpaters.

I get the following error message when i try to join  Windows 2003 R2 SP2 to domain:
The following error occurred attempting to join the domain "mydomain": The account is not authorized to login from this station.

Solution: On the Window 2003 Server go to Control Panel - Administrative Tools
Open Local Security Policy.  Expand Local Policies to select Security Options.  Change the following setting to DISABLED:
Microsoft network server: Digitally signed Communications (if server agrees)

Also see MS KB281648

Error: When running perfmon, Perfmon performance objects are showing as numbers

The only solution is  to rebuild Perfmon performance objects. This is simply done by running lodctr /r

Below is the LODCTR help file

LODCTR

    Updates Performance Monitor counter names and explain text for an extensible

 counter

Usage:

    LODCTR [\\computername] filename

        computername is the name of the remote computer. Currently computername

is

            ignored until remote installation is supported.

            Local machine is used if computername is not specified.

        filename is the name of the initialization file that contains

            the counter name definitions and explain text for an extensible

            counter DLL.

    LODCTR /S:<FileName>

        save current perf registry strings and info to <FileName>

    LODCTR /R:<FileName>

        restore perf registry strings and info using <FileName>

Note: any arguments with spaces in the names must be enclosed within

Double Quotation marks.

SQL 2005 Error: login failed for user sa the user is not associated with a trusted sql server connection

Solution: Make sure mix authentication is on (SQL / Windows), make sure SA account is enabled and restart SQL Server service.

1. Run netstat on RRAS server to make sure it is listening on port 443
2. Run “netsh http show sslcert” command to check SSL bindings.
3. Confirm application ID {ba195980-cd49-458b-9e23-c84ee0adcd75}is in each of the bindings.
4. Confirm certificate hash match the certificate has of the valid SSL certificate.