Upgrade windows 10 home to windows 10 pro

So we buy our pc's from local retailers, they come with windows 10 home.  For the life of me I can't upgrade them, well I can only do 10.  So the way to do it is through the store with your ms account, but it only allows 10 upgrades????  I have to degrade someone to upgrade another?  I can order the OEM disc, but there has to be a way to upgrade more than 10 pcs from windows home to pro.
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JohnBusiness Consultant (Owner)Commented:
If they are OEM (and they are if from a local retailer) you need to pay and upgrade individually.

If you wish to use a volume license, you have to buy the complete license. There is no upgrade from OEM Home to Volume Pro.
bergertimeAuthor Commented:
They are OEM and to upgrade, the only path I can find is to buy it via the store for $99.  Great, I did this on the first 10,but now it says you can only upgrade 10 pc's per account.  So now how do I do the 11th?  Go to new egg and buy an new OEM and wait on it to ship?  

So I guess my question is can you upgrade a window 10 home box to windows 10 pro (I know I have to pay)  another way other than the app store as it only allows 10 upgrades.

I have no interest in volume license's.  I just want to buy from local store and upgrade it from home to pro.

JohnBusiness Consultant (Owner)Commented:
Maybe use a different account for each PC. Register the PC to the user and then upgrade that way.
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bergertimeAuthor Commented:
That would work, but having to keep up with all that...ms account info for all 200 users....IDK, I'll see if anyone else post a solution.
Lee W, MVPTechnology and Business Process AdvisorCommented:
This is the problem you face when you don't do it properly.  

If you purchased Windows 10 Pro systems from the start there would be no wasted time upgrading (time=money) plus the cost of the upgrade.  Plus the cost of managing the upgrades.  You have 200 machines... if you did the properly, buying Pro equipped systems you could simply buy ONE volume license and then use deployment tools making the deployment of the PCs much, much faster - and more uniform.

You have to use separate accounts if you insist on doing it your way.
So you need pro right now? In that case, install it, you can activate it later when your keys arrive.
Any pro ISO could be used for the upgrade installation.
Not only a ten pro entitles you to install 10 pro, but also a 7 pro or 8.x pro key does.

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JohnBusiness Consultant (Owner)Commented:
You can only do 10 at a time, so the only other option is 20 accounts.

For 200 users:

(a) why not buy Pro?  Do not let retailers sell you home. If you have new in boxes, return them.
(b) For 200 computers, volume licensing might be faster and better.
bergertimeAuthor Commented:
Ok, it sounds like one option is to add more accounts. I can only have 10 on my upgraded pc's on my ms account.  So what happens when I delete an account, does the upgrade come illegal?  Am I supposed to remove it even though I paid my 99 bucks?  I can't seem to find the answer to that.  

The reason we do it this way is we have a lot of users who are here for a short time who bring their own pc/laptop.  On windows 7 it was easy, Upgrade them and give them their upgrade key.  We did VL several years ago, but once we moved email to the cloud, Office licenses went away and it just made much more sense to do it this way.  

So, if someone comes in to work for our company that has his own pc and I need to upgrade his windows 10 home version to Pro, I can either do 10 per ms account, or do it the way McKnife suggests.  I guess ms even provides a key to do this.  http://betanews.com/2015/12/21/upgrade-from-windows-10-home-to-pro-using-this-product-key/ .
Yep, that's the legal well-known generic key for pro.
bergertimeAuthor Commented:
So as a follow up question, anyone have any idea what happens if I delete a computer that I upgraded from my ms account?  Will the computer no longer be licensed?
JohnBusiness Consultant (Owner)Commented:
I do not think licensing goes away with your account because accounts can change. Licensing is on the server and uses your machine codes. I have reinstalled Windows 10 without signing in anywhere.
bergertimeAuthor Commented:
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