What is User Principal Name (UPN) ? - Definition from Whatis.com

Definition

User Principal Name (UPN)

In the Windows operating system's Active Directory, a User Principal Name (UPN) is the name of a system user in an e-mail address format. The user name (or "username") is followed by the "at sign" followed by the name of the Internet domain with which the user is associated. An example might look like: bill.yeti@walkingstick.kathmandu.np. The UPN format is based on Internet RFC 822.

Related glossary terms: teergrube, image spam, backscatter spam, spambot, Sender ID, spamblock, whitelist, Vouch by Reference (VBR), KnujOn, spim (instant messaging spam)

This was last updated in September 2005

Editorial Director: Margaret Rouse

Premium Access

Register now for unlimited access to our premium content across our network of over 70 information Technology web sites.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Dig Deeper

An overview of Forefront Protection 2010 for Exchange Server

Take a deep dive into Forefront Protection 2010 for Exchange Server and see how it helps defend Exchange 2010 from spam and malware attacks in multiple types of environments.
Six commonly overlooked Exchange security vulnerabilities

Think you’re taking the steps needed to fully secure Exchange? Think again.
Free Exchange add-on picks up native spam filtering slack

It's no secret that Exchange administrators hate spam. Protect users with a free add-on that bolsters Exchange’s native spam filtering.

People who read this also read...
Resources from around the Web
- Microsoft provides more information.
- SearchWin2000.com provides more about "Active Directory and Network Administration."

Show me more

Do you have something to add to this definition? Let us know.

Send your comments to techterms@whatis.com

Research More Tech Terms

Search thousands of tech definitions
Browse tech definitions
Browse Alphabetically:
- A
- B
- C
- D
- E
- F
- G
- H
- I
- J
- K
- L
- M
- N
- O
- P
- Q
- R
- S
- T
- U
- V
- W
- X
- Y
- Z
- #

Powered by WhatIs.com

File Extensions and File Formats

File Extension and File Formats List:

A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
#

Powered by WhatIs.com

More from Related TechTarget Sites

Windows Server
Enterprise Desktop
Cloud computing
SQL Server
Windows IT

Windows Server
- How P2V tools can help you choose between Hyper-V and VMware
  
  Hyper-V or VMware? The question's not going away, but migration planning products can help you give a more informed answer.
- Why Workflow may be PowerShell v3's most important feature
  
  Your task list is about to be reborn. Our expert explains how Workflow will help you now -- and how it will help guide Microsoft in the future.
- Test your System Center 2012 knowledge
  
  What's new in System Center 2012? See how much you know about a wide variety of topics in System Center.
Enterprise Desktop
- Group Policy settings FAQ: Why they matter
  
  Group Policy settings in Microsoft's Active Directory are useful not only for managing user access and applications, but IT admins can also apply them to desktop and server security.
- What place do biometric passwords have in enterprise security?
  
  Traditional passwords and smart cards alone may not be enough to protect data anymore, so biometric passwords could be the next big thing in enterprise security.
- Tuning and tweaking device drivers on the Windows 8 Consumer Preview
  
  The Windows 8 Consumer Preview recognizes most hardware, but you should keep up on OS and chipset developments and review Windows device drivers. Here's where to start.
Cloud computing
- Download the Private Cloud E-Zine
  
  Get exclusive access to this expert bi-monthly e-zine with essential resources for building your private cloud infrastructure.
- What makes a good cloud provider?
  
  Fair costs and SLAs were once enough to discern top cloud providers. In today’s packed cloud market, vendors must bring more to the table.
- Azure’s identity crisis and other cloud computing sound bites
  
  Microsoft Azure wants to be called Loretta. No, that’s not true. Or is it? Find out that answer and other news overheard in the cloud this past week.
SQL Server
- More T-SQL statements in SQL Server 2012 you need to know about
  
  In this second article of a two-part series on new T-SQL statements, expert Serdar Yegulalp reviews command changes to sequencing, date values and more.
- Three new T-SQL commands in SQL Server 2012 to make your life easier
  
  Each release of SQL Server brings changes to Transact SQL. In this tip, expert Serdar Yegulalp gives a walkthrough of tweaks like WITH RESULT SETS for renaming columns and THROW for catching errors.
- Configuring SSRS the easy way
  
  Demystify the SQL Server Reporting Services (SSRS) configuration process. Get an overview of this tool and guidelines for how to set up each screen in SSRS from industry professional Roman Rehak.
Windows IT
- Windows words of the week: Tired and retired
  
  Windows is dead. Long live Windows! This week, industry experts grappled with the future of Microsoft's venerable operating system, one quote at a time.
- Understanding management gets your IT department what it needs
  
  Crafting the perfect pitch can be difficult in a budget-conscious workplace. Knowing how management will react to proposals can help.
- What's in a name? Azure branding confusion and the meaning of 'badware'
  
  Find out why Microsoft had some questioning its mental health and what mosquitos have to do with the ongoing malware fight.

All Rights Reserved, Copyright - 2012, TechTarget