John Howard - Senior Program Manager in the Hyper-V team at Microsoft

Senior Program Manager, Hyper-V team, Windows Core Operating System Division.

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  • Blog Post: Post domain migration - removing sidHistory

    After a successful domain migration, you may be in a situation where it is necessary to remove the sidHistory attributes from objects in your new domain. There are many ways to do this, and many migration tools provide that capability straight out of the box. You could of course use something like ADSIEdit...
  • Blog Post: Backing out overdone Software Restriction Policies

    One of the things about playing with Software Restriction Policies is that you can go too far and end up not being able to do anything to rectify the situation. Active Directory Group Policy applied through a link to an OU is easy enough to fix - simply remove the GPO link and reboot the client. However...
  • Blog Post: Managing your windows websites and web services

    If part of your job entails monitoring and management of Windows Websites and Web Services hosted on Windows Servers and are using MOM to manage that environment, take a look at the latest version of the free management pack download "Microsoft Web Sites and Web Services Management Pack for MOM 2005...
  • Blog Post: Windows Server 2003 R2 Event - Tomorrow in Reading

    Just realised I hadn't posted up info about this one before. With Windows Server 2003 R2 "RTM'ing" (Releasing To Manufacture) today, I'll be co-presenting a TechNet event, "An Introduction to Windows Server 2003 R2" with Samm DiStasio, Director of Windows Server Product Marketing Group based in Redmond...
  • Blog Post: Hyperthreading and Microsoft Virtual Server 2005

    Several people internally at Microsoft have commented that you should turn off Hyperthreading when you're running Microsoft Virtual Server 2005, especially under load. It appears that the overhead of scheduling between logical processors gives either no performance gain or even possibly adverse performance...
  • Blog Post: Microsoft Virtual Server 2005 Announcements

    Yesterday was significant for two reasons. Two related announcements were made on microsoft.com regarding the support policy for those of you running microsoft applications in virtual environments. I am asked about this so often, and am frustrated by the answers I have had to previously give. No longer...
  • Blog Post: Small Business Server (SBS) 2003 SP1 availability

    In line with the announcements for Service Pack 1 for Windows Server 2003 today, another important announcement was made regarding SP1 for Small Business Server 2003. SP1 for SBS2003 will be available approximately 60 days from today, and will include a rollup of the latest service packs and updates...
  • Blog Post: Watch those group policy settings carefully

    Many people get caught out with group policy - I stand up and tell people all about some of the gotchas on a regular basis. You know, things like making sure you understand the double negatives such as Disabling "Do not keep history of recently opened documents" to keep the history. It really is worth...
  • Blog Post: Virtual Server Roadmap and Windows Virtualisation (Virtualization) aka Hypervisor

    If you're interested more in the future of Virtualisation (Virtualization if you're from the other side of the Atlantic from me), or where Microsoft is heading in terms of the broad architecture of the Windows "Hypervisor" check out this link to a publicly available slide deck on the Virtual Server roadmap...
  • Blog Post: Do you use blogging software?

    Something which cropped up internally over the past couple of days has been a discussion about how many people at Microsoft must have moved on beyond using the standard HTML interface to their blog engine for posting. I kept quiet at this point once discussions got round to all sorts of software I'd...
  • Blog Post: Part 14: Infrastructure essentials Blogcast - Preparing to receive mail through SMTP transfer

    Continuing the blogcast series on infrastructure essentials. This next blogcast raises the bar in terms of email retrieval. In the previous part, we were using POP3 email retrieval, similar to many home users retrieve email from an ISP hosted mailbox. This solution isn't necessarily ideal for business...
  • Blog Post: ISA Server cannot load the property page 0xc0040357 on export or backup

    How to fix the following error on ISA 2004 backup or export: ISA Server cannot load the property page. Error: 0xc00403557 The Server referenced by Array [ArrayName] does not exist A bit off topic for my usual blogging activities, but I had to share the resolution to this problem with you. I've...
  • Blog Post: Shared Networking (NAT) workaround in Virtual Server 2005

    Following the Virtual Server technical overview event I presented in Manchester yesterday evening, I was asked about Shared Networking (NAT) which is present in Virtual PC 2004, but not in Virtual Server 2005 and whether there was a way to provide this through an alternate mechanism. Here's the answer...
  • Blog Post: Securely Publishing Exchange 2003 using ISA Server 2004 - "Zero to Hero"

    Thanks for everyone who attended todays security event in London. I hope you got a lot out of the demonstration I ran through today, plus of course the other sessions. It was certainly the scariest and possibly "riskiest" session I've ever considered - taking on 90 mins+ of unrehursed demo could have...
  • Blog Post: How to upgrade from SUS to WSUS

    Marc Shepard, a Program Manager for Microsoft in the US held a session at Tech·Ed Orlando this year about how to upgrade from SUS to Windows Server Update Services, the next version of SUS. I know this session was highly rated, and I've already listened to it from the conference website. If you don't...
  • Blog Post: It's Showtime on Technet

    Just gone live are a series of video recordings of live sessions on Technet UK. Come and choose from some of the best recordings of sessions for IT Pro's over the past few months from speakers including John Craddock, Andreas Luther, Jesper Johansson, Rafal Lukawiecki, Steve Riley, and coming soon, you...
  • Blog Post: Hands-on Windows OS Internals and Advanced Troubleshooting

    I received an email from David Solomon - author of Windows Internals this morning. By amazing coincidence, I happened to have a copy of it open and reading it just as the email came in. David & his colleage, Mark Russinovich regularly give courses to folks in the Windows Core OS Division here in...
  • Blog Post: Popup follow-on from yesterday

    Well, there is another difference between the msgbox function and popup method as was pointed out to me by several people. Msgbox only displays the first 1024 characters of a dialog whereas popup displays a lot more (I haven't looked to see what the actual limit is although I can certainly fill the screen...
  • Blog Post: Free Technet IT Forum Highlights all-day event in Birmingham on Jan 13th.

    The registration site for the IT Forum Highlights event in Birmingham Thursday January 13th, 2005 is now open. This event is free of charge and being held at the National Motorcycle Museum . There are 15 70-minute sessions running throughout the day, running in 3 tracks allowing you to pick and choose...
  • Blog Post: Part 18: Infrastructure essentials Blogcast - RPC/HTTP for Outlook & Exchange - Initial Setup

    Continuing the blogcast series on infrastructure essentials. The third part of configuring RPC over HTTP for Outlook 2003 configures the registry on Exchange 2003 and ensures that IIS is correctly configured on our Exchange server. This is a critical step in ensuring that internal problems are non...
  • Blog Post: ISA 2004 Patch Caching - new feature to cache BITS traffic over HTTP

    You may have missed TechEd last week in the US. I did due presenting at the Technical Roadshow, but something rather significant caught my eye just now from an internal email, which I wasn't aware of before. Gordon Mangione in his security keynote mentioned a filter available later this year which would...
  • Blog Post: Windows Server 2003 R2 End-To-End Overview

    If you missed yesterdays webcast exploring the three key areas of the upcoming Microsoft Windows Server 2003 R2: Branch Office, Storage Management and Active Directory Federation Services, it is available "on demand" to listen at your leisure. If you're new to Windows Server 2003 R2, this provides an...
  • Blog Post: Malicious Software Removal Tool

    As much as a bookmark blog as anything else so I know where to find it. You may have seen the malicious software removal tool come down through WindowsUpdate/MicrosoftUpdate. What I didn't know was that a version with the latest updates is released on the second tuesday of every month, and can be run...
  • Blog Post: Silently Removing XP Games

    I'm often sent questions by email about how to do x, how to do y, what does z do etc. This one was a common issue, so I felt it was worth sharing. During their installation, a particular company had included the standard XP games (minesweeper, solitaire and so on). It was a relatively small company ...
  • Blog Post: ADS to deploy Windows XP?

    I have to admit, I'd never thought of this one. Yes, I've looked into using ADS (Automated Deployment Services) for deploying Windows Server 2003 and use it as part of the Virtual Server Migration Toolkit ( VSMT ) solution but never thought of using it to deploy Windows XP. Unsupported it may be, but...