Windows 10: No more “out of memory” errors for Windows Phone emulators in W10

Brink · Jan 27, 2017

For those of you who run emulators in Visual Studio, you may be familiar with an annoying error:

It periodically pops up even when task manager reports enough available memory – this is especially true for machines with less than 8GB RAM. Most of the time, it’s because there genuinely isn’t enough memory available but sometimes it’s because of Hyper-V’s root memory reserve (discussed in KB2911380).

This blog will tell you what the root memory reserve is, why it exists, and why you shouldn’t need it on Windows 10 starting in build 15002 (original announcement here). I also wrote a mini script to clear the registry key that controls root memory reserve if you think it may be set on your system.

Invoke-WebRequest -Uri https://raw.githubusercontent.com/Mi...rve-regkey.ps1 -UseBasicParsing -OutFile ./clear-MemoryReserve-regkey.ps1 .\clear-MemoryReserve-regkey.ps1 rm clear-MemoryReserve-regkey.ps1
So, What is the root memory reserve and why is it there?

Root memory reserve is the memory Hyper-V sets aside to make sure there will always be enough available for the host to run well.

We change Hyper-V host memory management periodically based on feedback and new technology (things like dynamic memory and changes in clustering). The root memory reserve is only one piece of that equation and even calculating that piece has several factors. Modifying it is not supported but there is still a registry key available for times when the default isn’t appropriate for one reason or another.

KB2962295 basically describes measuring, monitoring, and modifying the root reserve.

KB2911380 tells you how to manually set it.

And now I’m here to tell you to remove it!

$rootReserveKey = "MemoryReserve" $rootReserveKeyPath = "HKLM:Software\Microsoft\Windows NT\CurrentVersion\Virtualization" # And here's how you remove it *Smile Remove-ItemProperty -Path $rootReserveKeyPath -Name $rootReserveKey
Why you don’t need root memory reserve any more.

We stopped using a root memory reserve in favor of other memory management tools in Windows 10. The things that make it necessary are unique to server environments (clustering, service level agreements…).

However, while the default memory management settings on server are now different from Hyper-V on Windows, if root reserve is set on Windows 10 Hyper-V will respect it — you won’t see any of the memory management changes we made. Which is why now is the time to clear that custom root memory reserve.

Cheers,

Sarah
Click to expand...

Source: https://blogs.technet.microsoft.com/...out-of-memory/

:)

asandino · Jan 27, 2017

n97 out of memory errors

Copyless thanks for the tip. Kudos added

I had the same problem a friend was trying to bluetooth some videos to me and I was getting Memory problem, How embarasing after a few min of my mates being impressed with the phone, and me praising it and talking about so much space and blah blah blah.

I could not receive videos via bluetooth because they were 5MB. WHY on EARTH can they not default this to the E: drive.

Whoever made that decision in NOKIA should be fired what an idiot.

Also when I finally got to get the pictures on the phone via a computer I could not see them via the "Photos" I had to go via the File Manager and see one by one. AARRRRRRRRGHHH I am getting to the point that I am going to return this phone.

lindhve · Jan 27, 2017

n97 out of memory errors

You can always try to do also soft reset instead of hard reset. Soft reset doe not remove any apps. only some settings will go to default settings. Put your phone offline mode and then type *#7780#.

I had some problems with certain web pages. Issue with cookies and that helped me....

Also if you have lack of phone memory you can always make some free space easily by installing all apps to mass memory. Note that existing widgets are all in the phone memory. You can move them to mass memroy by deleting them and then downloading and installing
again via ovi store....

Windows 10: No more “out of memory” errors for Windows Phone emulators in W10

No more “out of memory” errors for Windows Phone emulators in W10

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