This article discusses some errors that are received when using the XmlHttp Object to access a secured url from an unsecured page.

When you attempt to access a secure URL by using the XMLHTTP request object from a script on a non-secure Web page, you may receive one of the following error messages:

Access is Denied

This problem only occurs if a non-secure page attempts to access a secure page. Accessing a secure page from another secure page does not generate an error.

Upgrade the MSXML 3 Parser to Service Pack 5.

Microsoft Knowledgebase article 304420

Figure 1 windowThe database of Microsoft Exchange 2000/2003 is called WebStorageSystem. This database can be accessed via WebDAV, a HTTP related protocol. Mistaya allows you to explore this database with an explorer-like interface. All you need is a connection via port 80 to the exchange server.

0.9.1697.18862

0.9.1640.30106

0.9.1637.39817

0.9.1578.31532

0.9.1568.19126

0.9.1468.41438

0.9.1459.39400

Mistaya published on 08/24/2004

Figure 1 IntroAssembly Assimilator analyzes a given .NET assembly and combines all dependencies into one single assembly.

Assembly Assimilator

WinZIP is a very popular program to manage compressed files. You can get it from http://www.winzip.com.

WinZIP Plugin

This plugin integrates the free anti-virus scanner FreeAV in Bart's PE Builder 3.xx.

FreeAV Plugin

The events within the .NET framework have a severe drawback: If multiple objects have subribed to an event and one subscriber throws an exception, all subsequent subribers are not notified of the event. This is especially true for events used within the remoting framework: If a connection is broken between a event provider and a subscriber, a TargetInvocationException is thrown when the event is invoked.

This class solves this problem by manually invoking each subscriber. All failed notifications are returned to the sender, which in turn can remove the failed subscribers from the list.

Sourcecode

Documentation

MagicPackets are special IP packets that are recognized by Wake-On-LAN capable network adapters. If such a packet is received by a network adapter, it will boot the computer.

The packet contains the MAC address of the destination computer and is sent either sent to the global broadcast address (255.255.255.255) or the broadcast address of the destination subnet (e.g. 192.168.1.255).

Source

Example program

Documentation

The existing threadpool class has several drawbacks:

One example for the latter point is the HttpWebRequest Class, which still goes further and throws an exception when less than two threads are available on the threadpool. (See my article HttpWebRequest fails when several connections are made concurrently).

These drawbacks are evaded with this implementation: Within one process more than one instance can be instantiated and the number of available threads can be adjusted per instances. Additionally, the number of used threads is dynamic, so unused threads will starver over time and will be recreated when load goes up.

Source and documentation

Some of the ideas for this implementation were taken from the CodeProject article Smart Thread Pool by Ami Bar.

The MDAC component is a set of components that allow uniform data access to various data sources. These components can become corrupted. This article outline a way to manually repair the MDAC components.

If a program that accesses databases via ADO (ActiveX Data Objects) or similar displays the error message

The specified Procedure was not found

this indicates, that the MDAC installation is damaged.

Additionally, a new installation of the MDAC components does not solve the solution.

If a reinstallation of the MDAC components does not solve the problem, try the following steps to manually repair the MDAC components:

1. Download the MDAC setup suite in the version that is already installed on your system. It can be found on the Microsoft Download website.

2. Open a command prompt and change to the directory where you saved the file.

3. Type
   MDAC_TYP /c /t:<myfolder>
   where <myfolder> is a folder on your harddisk, e.g. c:\temp\mdac

4. Change the current folder to <myfolder> and type the following:
   md temp

   expand mdacxpak.cab temp -f:*.*

5. Cut-and-paste the following code snippet into a text editor and save it as makedirs.cmd in the <myfolder>\temp directory:
   @echo off

   md ADO

   copy /b MSADER15.DLL ADO

   copy /b MSADO15.DLL ADO

   copy /b MSADO20.TLB ADO

   copy /b MSADO21.TLB ADO

   copy /b MSADOMD.DLL ADO

   copy /b MSADOR15.DLL ADO

   copy /b MSADOX.DLL ADO

   copy /b MSADRH15.DLL ADO

   copy /b MSJRO.DLL ADO

   md MSADC

   copy /b MSADCE.DLL MSADC

   copy /b MSADCER.DLL MSADC

   copy /b MSADCF.DLL MSADC

   copy /b MSADCFR.DLL MSADC

   copy /b MSADCO.DLL MSADC

   copy /b MSADCOR.DLL MSADC

   copy /b MSADCS.DLL MSADC

   copy /b MSADDS.DLL MSADC

   copy /b MSADDSR.DLL MSADC

   copy /b MSDAPRSR.DLL MSADC

   copy /b MSDAPRST.DLL MSADC

   copy /b MSDAREM.DLL MSADC

   copy /b MSDAREMR.DLL MSADC

   copy /b MSDFMAP.DLL MSADC

   md "OLE DB"

   copy /b MSDADC.DLL "OLE DB"

   copy /b MSDAENUM.DLL "OLE DB"

   copy /b MSDAER.DLL "OLE DB"

   copy /b MSDAORA.DLL "OLE DB"

   copy /b MSDAOSP.DLL "OLE DB"

   copy /b MSDAPS.DLL "OLE DB"

   copy /b MSDASC.DLL "OLE DB"

   copy /b MSDASQL.DLL "OLE DB"

   copy /b MSDASQLR.DLL "OLE DB"

   copy /b MSDATL2.DLL "OLE DB"

   copy /b MSDATT.DLL "OLE DB"

   copy /b MSDAURL.DLL "OLE DB"

   copy /b MSXACTPS.DLL "OLE DB"

   copy /b OLEDB32.DLL "OLE DB"

   copy /b OLEDB32R.DLL "OLE DB"

   copy /b OLEDB32X.DLL "OLE DB"

   echo.

   echo Finished !!

   :eof

6. In your command prompt window, change to the directory where you extracted the cab file.

7. Start the above file by typing
   makedirs.cmd

8. The above batch file has now created three directories within the current directory, , MSADC and OLE DB. These three directories must now be placed under the %CommonProgramFiles%\system directory.

9. Now, cut-and-paste the following snippet into a text editor and save it as RegFiles.cmd in the %CommonProgramFiles%\system directory:
   @echo off

   echo Unregistering DLLs...

   for %%a in (ado\*.dll msadc\*.dll "ole db"\*.dll) do regsvr32 /u /s %%a

   echo Finished.

   echo Reregistering DLLs...

   for %%a in (ado\*.dll msadc\*.dll "ole db"\*.dll) do regsvr32 /s %%a

   echo Finished.

10. Within your command prompt, change the current directory to %CommonProgramFiles%\system and type the following:
    RegFiles.cmd
    This will de-register the MDAC components and the re-registers them.

This solution was taken from the newsgroup microsoft.public.data.ado. The name of the thread was Repair a corrupted MDAC 2.71 installation - the Solution. Many thanks to the author Jens Geyer

Symptoms

The CSRSS process consumes about 100% of the cpu under certain circumstances, such as opening an Outlook mail folder. Additionally, cascading menus open only with a significant delay.

One possible cause for this is the Tweak UI tool from Microsoft. This tool exposes a bug in that it sets the MenuShowDelay to zero. In fact, the lowest valid value for this setting is one. To correct this, follow these steps:

1. Open the registry editor.

2. Navigate to the HKEY_CURRENT_USER\Control Panel\Desktop node.

3. Double-Click the MenuShowDelay entry.

4. Set the value of this entry to 1.

5. Close the registry editor.
   The changes are loaded the next time you log on to your computer.

The Tweak-UI tool from Microsoft is a tool to configure several aspects of the user interface from Windows. One of these settings is the delay for cascading menus.

The status of this problem is unknown.