Windows 7 – TV Archive Does Not Have Permissions to Access This Folder

I recently installed Windows 7 in a virtual machine on VMware vSphere so that I could start recording TV shows again with my HDHomerun.

Everything was working fine and all of a sudden I noticed that my recorded TV shows were not being moved to my Windows Home Server (WHS).

When I checked the activity of the TV achive in my Media Center I found the following status: TV Archive Does Not Have Permissions to Access This Folder.

I checked access to the Recorded TV folder on WHS from my Media Center using Windows Explorer and it worked fine. I double checked the user settings and folder permissions on WHS and they were fine too.

I had accessed WHS from my Media Center using another account and figured that might be the cause of the issue. So I set about removing the cached credentials for the non Media Center account as follows:

Press the Windows key and R to open the run dialogue box and then enter: control userpasswords2

Click the Advanced tab and then click the Manage Passwords button.

Locate the IP address for your WHS and then expand the selection and click Remove from vault.

This resolved the issue for me.

Windows 7 Media Center – How to Take Screenshots

If you try to take a screenshot in Windows 7 Media center by pressing the Print Screen key you will just end up with a black image.

Fortunately the fix is just a quick registry tweak away.

First close the Media Center application and then click the Start Orb, type Regedit and then press Enter and navigate to:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\

Then just add a DWORD called EnablePrintScreen and change its value to 1.

Close Regedit and then restart the Media Center application.

I tested this on Windows 7 x64 Media Center.

Source: Tech Hail

Windows 7 Media Center – Netflix: Authorization Failure

I tried watch a movie tonight on Netflix on my Windows 7 Media Center box only to be greeted with the following error:

Authorization Failure
Our apologies - We could not authenticate your request.

Looking at a couple of threads on The Green Button here and here I am obviously not the only person experiencing the problem.

I tried several of the fixes posted in these threads but the only fix that worked for me was this:

  • Exit Media Center
  • Open Internet Explorer and click Tools and then Internet Options.
  • Click the Delete button – check all of the check-boxes and then click the Delete button. Click OK.
  • Browse to and sign in.
  • Close Internet Explorer

At this point I started Media Center again and when I clicked on the Netflix icon I was prompted for my Netflix credentials. The only problem was that the Netflix application would not allow me to type anything in to the user-name or password fields.

So I closed Media Center and then opened Internet Explorer again and opened the Netflix site again.

I closed Internet Explorer and opened Media Center again – this time I got a pop-up from the Netflix application regarding authentication – so I clicked OK and then it worked.

Apparently Netflix are talking to Microsoft about the issue so lets hope that they sort it out soon.

Windows Home Server – Problem With WHSBackup.exe

Tonight I decided to take a quick look at my Windows Home Server (WHS) because my recorded TV shows (stored on WHS) were stuttering when played through my Media Center PC. This is something that I had already attempted to tackle here, with demigrator.exe.

What I found was that the WHSBackup.exe process was using 50% of my CPU for long periods of time. A client backup was actually running when I looked and then the WHSBackup service failed when it got to 99%.

I rebooted WHS and then took a look in the WHS Console to discover that no machines had been successfully backed up for 6 days. So I manually set a backup running and it did complete, so I am hoping that the reboot has fixed whatever the issue was, at least for now.

Otherwise the WHS Console reports that all my drives are healthy and my system is up-to-date with Windows Update – so fingers crossed for now!

Windows Home Server: Demigrator.exe Interrupts Media Streaming

Up until quite recently I had Windows Home Server (WHS) installed as a virtual machine on VMware vSphere. My Media Center PC was connected to WHS and I would stream High Definition (HD) content between the two without any issues.

The strange thing is, now that WHS is installed on physical hardware, my HD streams are regularly interrupted by Demigrator.exe on WHS – which is very annoying. This could be due to the fact that my media is duplicated on WHS now that it is not virtualized?

I attempted to fix this last night by installing ThreadMaster on WHS and saw some improvements. In about an hour and a half I only noticed two interruptions to a HD steam with ThreadMaster running on WHS – and only one of those interruptions was bad. Previously I might get 3 or 4 interruptions per hour.

ThreadMaster does not have a GUI and must be manually installed and configured. I will include my initial settings as follows, but I will most likely play around with them to see if I can improve things further:

First download ThreadMaster to your WHS and extract it.

Click Start, then Run and type cmd and then click OK. Browse to the location of the extracted files using the cd command, for example:

cd c:\Documents and Settings\Administrator\Desktop\tminst112

Then type install.bat into the command prompt and then press Enter. This will install ThreadMaster.

ThreadMaster is configured through the registry, so click Start and then Run again and type regedit and then click OK. Browse to HKEY_Local_Machine\SYSTEM\CurrentControlSet\Services\ThreadMaster\Parameters. As you can see there are two Parameters that I have set.

  • CPUThresholdPct is the CPU load threshold per application. This is a global setting and affects all applications, unless specified in the “Application” or “Exceptions” sections. Default: 15%, Valid range 3 – 100.
  • MainSampleTime is the time period used for calculating the average CPU utilization for applications. Default: 30 seconds. Values above 10 seconds accepted.

In the Applications section you can see that I have added Demigrator.exe and given it the value of 5. Here 5 represents the CPUThresholdPct for Demigrator.exe.

I will play with these settings over time, and hopefully be able to view media without interruption, but for now these settings have helped fairly well.


Since creating this post I have been regularly been adding HD content to my WHS courtesy of a newly acquired HD Homerun (recording .wtv streams from Comcast). All of this content lands in the Recorded TV folder which is set for duplication – sadly I have still been noticing demigrator.exe interrupting my WHS media streams.

My revised solution for now is simply to schedule when demigrator.exe can run, as per the following scripts by GaPony on the We Got Served forums:


@echo off
sc stop "DriveExtenderMigrator"
sc config  "DriveExtenderMigrator" start=  disabled


@echo off
sc config  "DriveExtenderMigrator" start= demand
sc start "DriveExtenderMigrator"

I scheduled these batch files using Task Scheduler on WHS (Start, All Programs, Accessories, System Tools, Task Scheduler).

How to Mount .iso Files in Windows 7 Media Center

Windows Media Center is gradually evolving but there are still things that it can’t do – such as mounting and un-mounting movies that are .iso files.

To achieve this we need to install two applications that will allow both Windows, and Media Center, to respectively mount and unmount .iso files.

To mount .iso files I downloaded and installed Virtual CloneDrive on my Media Center. Installation was very simple – I just clicked Next through-out the installation to accept the defaults. This enables me to mount and unmount .iso files from the Windows 7 desktop.

To achieve the same functionality in Window 7 Media Center I installed Mount Image (which is available in 32 and 64 bit versions for Windows 7 and Vista Media Centers):

Again, I just accepted the defaults for installation.

Now when I select an .iso in Media Center it is automatically mounted and ready to play.

If you ‘eject’ an .iso file in Media Center it just un-mounts the file for you which should make mounting the next .iso a little quicker.

All in all a quick, painless and free solution!

Related posts: Windows 7 Media Center – Creating Artwork & Metadata for .iso Images With Yammm