Audio & Web Conferencing

I use in my professional live often web conferencing tools. Until now WebEx was the best tool, but it was not free. Now I found a nice tool that does everything I want:

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Pre-requirements installation package VS2008

The pre-requirements you can set when making an installation package in VS2008 can be found in the directory C:\Program Files\Microsoft SDKs\Windows\v6.0A\Bootstrapper\Packages. You need this sometimes if you need the runtime for Crystal Reports for Visual Studio 2008. Only have this directory if you have Visual Studio 2008 installed on your machine.


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Exchange server 2003:
ESM, Servers, <your server>, Protocols, SMTP. Right click on the Default SMTP vs and choose Properties. Click on Delivery and then Advanced. In the FQDN box enter what your server is known as on the internet – for example. 

If you have an exchange server running on dynamic IP address and you domain name is not mapped to this server you can get this error also.

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Shrinking Virtual Machines

I found a very nice tool for shrinking of virtual machines and it’s freeware. The tool does not only shrink the virtual hard drive but can also optimize the virtual machine by deleting games, temp folders, … You don’t need two tools if you both use VMWare and Virtual PC because the tool can optimize the hard drives of both systems.

I could shrink one of my virtual machines from 36GB to 17GB. If you want to use the tool you have to have enough free disk space. First the tool does a cleaup op your drive, then is does a defragmentation and then it makes a new virtual machine and deletes the old one. For doing this he needs a lot of free disk space.

The tool is of Visizioncore and is called vOptimzer freeware.

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Getting a ‘File Security Warning: the publisher could not be verified’ when executing an application from a shared drive

 Sometimes you get a ‘File Security Warning’ with the message that ‘the publisher could not be verified’ when you execute an application from a shared drive. This can easly be solved by doing the following:

  • Control Panel, Internet Options, Security tab, Local Intranet, Sites, Advanced
  • Add \\Server\share as a website to the “zone”

Now the problem should be solved.

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Compacting a Virtual Hard Disk

A nice sample how you have to compact your virtual hard disk can be found on this link.

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ASP.NET Version Switcher

 The ASP.NET Version Switcher is a little utility that can be used to quickly switch the .NET Framework version that the ASPX pages are compiled against. This is helpful for developers who often have to test their web applications for compatibility with different version of the .NET Framework.The program can be downloaded from

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Get security tab in Windows XP Professional

 To get the Security tab back in Windows XP Professional:

  1. In the Control Panel, open the Folder Options applet.
  2. In Folder Options, select the View tab.
  3. In the Advanced settings area, scroll to the bottom of the settings list and locate Use simple file sharing (Recommended).
  4. Uncheck the checkbox. 

Now you can manage the permissions on files and folders using the Security tab that magically shows up.

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Troubleshooting Orphaned Users (users not linked after restore DB in SQL server)

 After restoring a backup in SQL server you can have the problem that the users of you database are not linked anymore to the users of the database.This problem can be solved by running the command: sp_change_users_login ‘update_one’, ‘DBUser’, ‘DBUser’

To see all users that are not linked: go sp_change_users_login ‘report’

More information can be found in the article:


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