Renowned as the creator of the acclaimed Petri IT Knowledgebase back in 1999 Daniel Petri has become a distinguished figure in the IT realm, recognized for delivering reliable, expertise-driven content. This website - www.petri.com - not only embodies Daniel's extensive technical skills but also stands as a symbol of his dedication to sharing knowledge and guiding professionals through the dynamic world of information technology.
Over the past 25 years, Daniel Petri's career is characterized by his unwavering commitment to quality IT training, provision of diverse solution architectures, and maintaining a customer-first approach that ensures high levels of satisfaction. Daniel's client-centric mindset has always been a cornerstone of his career, delivering concrete results that spur his clients' growth and success. Daniel's strong technical writing skills are evidenced by the thousands of technical documents, help guides, manuals, and articles he has penned, all drawing from his broad IT and security-oriented background.
Daniel is currently Senior Training Manager at Semperis.

Last Update: Sep 24, 2024
These LDAP search strings are good for Saved Queries in Windows Server 2003 AD Users and Computers, Query-based Distribution Groups and Exchange 2000/2003 Recipient Policies and Address Lists. In order to use the LDAP strings please consult your product help. Most regular LDAP searches can be easily done via the provided GUI (such as in a…

Last Update: Sep 24, 2024
In a great blog entry by Michael B. Smith, he has outlined a scripted method of obtaining the Mailbox and Public Folder store sizes on all Exchange servers in your organization. As Michael explains, it is a common request is to find out how much disk space Exchange is using in all of the various…

Last Update: Nov 19, 2024
How can I require Windows 98 clients to logon to the domain instead of pressing “cancel” at the welcome screen? By default Windows 9x doesn’t require a valid network username and password combination for a user to bypass the logon and gain access to the local machine. This functionality can be changed to require validation…

Last Update: Sep 24, 2024
In Exchange 2000/2003 Server, can anyone create new Public Folders? How can I limit the creation of top-level Exchange Public Folders? The highest Public Folder in a hierarchy is called a Top-Level Public Folder. By default, all users in the Exchange Organization can create Top-Level Public Folders; however, you can change the default with the…

Last Update: Nov 19, 2024
What are the network setting required for a computer to join a domain? In order to be able to join a Windows 2000 or Windows Server 2003 domain you must properly configure your XP/W2K computer. Note: XP Home Edition is not designed to join domains; only workgroups. To join domains, use XP Professional version or…

Last Update: Jun 25, 2025
Why does Outlook still show only the basic Public Folders structure although I’ve created additional Public Folder hierarchies? When you install Exchange, a default public folder hierarchy is created. All MAPI clients such as Microsoft Outlook can access this public folder hierarchy to read messages and store documents. You can create subfolders to reflect the…

Last Update: Nov 19, 2024
Forgot the Administrator’s Password? – Reset Domain Admin Password in Windows 2000 AD Note: In order to successfully use this trick you must first use one of the password resetting tools available on the Forgot the Administrator’s Password? page. The reason for that is that you need to have the local administrator’s password in order…

Last Update: Nov 19, 2024
One of the first tasks that one performs right after finishing the installation of a new operating system is to install all the required additional applications and change the system’s settings to match their own requirements. One of the most frequently used applications I install on my machine is Adobe Acrobat Reader (see http://www.adobe.com/products/acrobat/readstep2.html for…

Last Update: Dec 03, 2024
If you like this site, if you like the style, if you like the contents – why not add a link to it? You can choose any of the following link examples (or create your own of course): 151×74 button and description <a title=”Petri.co.il by Daniel Petri is one of the most comprehensive IT and…

Last Update: Nov 19, 2024
Note: In order to successfully use this trick you must first use one of the password resetting tools available on the Forgot the Administrator’s Password? page. The reason for that is that you need to have the local administrator’s password in order to perform the following tip, and if you don’t have it, then the…

Step 1 Restart Windows 2003 in Directory Service Restore Mode. Note: At startup, press F8 and choose Directory Service Restore Mode. It disables Active Directory. When the login screen appears, log on as Local Administrator. You now have full access to the computer resources, but you cannot make any changes to Active Directory. Step 2…

Last Update: Sep 24, 2024
How can I reset the folder views in Windows XP? Sometimes the default folder views in Windows Explorer and My Computer in XP can drive you nuts… The default views in Windows Explorer and My Computer in a out-of-the-box Windows XP computer are not the same as we were used to in W2K and Windows…