Windows Hotfixes for October 2015

Jeff here from the Windows SDK team. Here is the list of October 2015 Hotfixes [Drum roll, please…] KB3030736   “550 The process cannot access the file” error when you try to download a file in Windows KB3044546   An updated reservation may disappear on a DHCP failover cluster in Windows Server 2012 or Windows Server 2012…

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.NET Hotfix Rollup for August 2015

Jeff here, There is a .NET hotfix rollup for August. 3078646  Issues that this hotfix rollup resolves Issue 1 Assume that you have a Windows Presentation Foundation (WPF) application that creates an XPS file, and this XPS file has an embedded font that is missing some special characters. Assume then that you have another WPF…

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Windows August 2015 Hotfix List

Hey guys. Jeff here from the Windows SDK team. Here are this month’s hotfixes.   KB2966038   Printer managed by custom print providers is not visible in Devices and Printers in Windows KB3071345   Start screen customization is disabled for a Windows Embedded 8.1 Industry Pro-based computer KB3073902   NDES stops working after you restart a Windows Server…

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FileSystemWatcher Fencing(Part 1)

  This post is a follow up to the FileSystemWatcher Follies post.  I received a lot of feedback that it would be useful to highlight what would be appropriate to guide against some of the pitfalls that I mentioned in that post.  I’ll cover several of the issues here over a couple of posts and…


FileSystemWatcher Follies

  System.IO.FileSystemWatcher is a handy class that can be used to monitor directories for some types of changes with very little programming effort for the developer who uses it.  For some situations, it’s incredibly useful.  However, it often gets used in program designs with poor assumptions about how things are going to play out in…


Accidental Denial of Service through Inefficient Program Design Part 1 – Watching WMI Events for Object Creation (e.g. Win32_Process)

  There are few things that are more annoying as a user than to have the performance of a computer which they’re using grind to a halt.  This series will outline program design flaws that I’ve run across, explain what they are, how they impact the system, example scenarios where the impact will be exacerbated,…


C# and Fastcall – How to make them work together without C++/CLI (Shellcode!)

I recently ran into a situation where code had to meet the following requirements: C# language only No dependence on VC++ runtimes Support COM Interop with no ole32 Support delegates for Fastcall calling convention callback functions   The first three were no big deal in and of themselves.  The fourth, however, introduced a big problem. …


WLAN Programming How-To Tips and Tricks Including Using It in C#

 Questions concerning the wireless local area network APIs have been coming up a lot recently often in the context of using them from C#.  You’ll find an example C# WinForms application that allows you to see the almost all of the wireless network APIs in action at the end of this post.  The WLAN APIs facilitate the…


Debugging the PowerShell Debugger

When doing development for PowerShell cmdlets in a managed language such as C#, it can often be convenient to use the PowerShell ISE to test functionality.  Since it has a built-in script debugger, it help with finding some errors.  However, if you need to dig deeper into your own code and how it’s interacting with…


How to interoperate between SSPI and the .NET NegotiateStream Class

Win32 Desktop Applications can take advantage of SSPI to authenticate Windows Users.  In .NET, Windows Authentication can be done using the NegotiateStream Class. http://msdn.microsoft.com/en-us/library/system.net.security.negotiatestream(v=vs.110).aspx We have had several questions in the past on how you can get a Win32 Desktop Client/Server Application using SSPI to authenticate with a .NET Client/Server using the NegotiateStream Class. The…

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