Posted in General

I have an internal firewall between sections of my network. What ports must I open to allow user and computer account authentication?

Basic authentication on a network consists of several steps. First, the client locates a domain controller (DC), which requires DNS connectivity–port 53 on UDP and TCP. Next, the client performs a connectivity test by using a Lightweight Directory Access Protocol (LDAP) Ping–port 389 over UDP. Then, the client uses Kerberos (port 88 via UDP and […]

How can I determine whether my new Global Catalog is ready to service clients

When you enable a domain controller (DC) as a GC, the DC can’t start offering a GC service immediately. If you have multiple domains, the GC has to replicate information from another GC or for other domains before it can start functioning as a GC. By default, the new GC will wait at least 5 […]

When should I manually defragment a domain controller?

An online defragmentation of the Active Directory (AD) database occurs during the (AD) Garbage Collection process that runs every 12 hours by default. This defragmentation optimizes the database’s structure but doesn’t shrink the database’s size. If you’ve deleted a large number of records from AD or, more likely, you’ve disabled a DC as a Global […]

I recently promoted a server to a domain controller (DC), and now my event log reports an SPNEGO (Negotiator) event. What’s causing this error?

If this event (event ID 40960 or 40961) appears only once in the event log, you can ignore it. The error occurs when the File Replication Service (FRS) starts before the directory service. If the error persists, you most likely have a problem with the directory service and should start troubleshooting Active Directory (AD).

How can I determine which domain controllers (DCs) my Microsoft Exchange Server system is using?

Exchange has an internal process called MSExchangeDSAccess Topology Discovery, which runs every 15 minutes and rediscovers the contents of Active Directory (AD). For each DC it discovers, the process runs a series of tests against the DC and selects one or more DCs that contain the information that Exchange requires (i.e, a configuration DC, a […]

NEC e525

If you have a problem connecting to memory editor try downloading the version from Here select the correct com port by looking in system-hardware-device manager-modems-necmodem Thanks to Paul Lavey for the tip.

NEC 525 Memory Editor

It will allow you to: Upload download pics and mid/mmf Manage your phone book Manage groups Manage your to do list Manage your schedule/reminders Back-up you phone settings Direct Download

How can I connect to MSN messenger if my company block the ports ?

MSN have released a beta of a web based messenger. Connect here: Link

Differences between Windows Messenger and MSN Messenger ?

When you install MSN Messenger 6.1 on your system you will find that it does not remove/update Windows Messenger on your system. This is because MSN Messenger and Windows Messenger are not the same thing; Windows Messenger is the corporate client allowing connection to instant messenger servers on your local network such as Microsoft Exchange […]

How to remove image boarders on the desktop?

This boarder on desktop icons can be created when the desktop items have been locked, to unlock the desktop web items right click on an empty area of your desktop. Now select Arrange icons by and uncheck ‘Lock web items on desktop’ if it has a little tick next to it. If you did not […]