• Windows 10 Activation Servers Not Available
• Windows Activation Servers Not Available Windows 7
• Unable To Reach Windows Activation Servers

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The following information outlines initial planning considerations that you need to review for Key Management Services (KMS) activation involving Windows Server 2016. For information about KMS activation involving operating systems older than those listed here, see Step 1: Review and Select Activation Methods.

Windows 10 Activation Servers Not Available

KMS uses a client-server model to active clients. KMS clients connect to a KMS server, called the KMS host, for activation. The KMS host must reside on your local network.

KMS hosts do not need to be dedicated servers, and KMS can be cohosted with other services. You can run a KMS host on any physical or virtual system that is running Windows 10, Windows Server 2016, Windows Server 2012 R2, Windows 8.1, or Windows Server 2012.

• Hi, I have problem with SBS 2011 on Windows Server 2008 R2. Three days ago I installed updated and the process failed in some reason. The system rolled back itself after couple of hours and it showed me 3 updates were failed.
• Understanding Windows 10 activation. Depending on how you get Windows 10, in some cases you're not supposed to need to type in a product key. If you were running a legitimate copy of Windows 7.

Jan 20, 2016  Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact tnmff@microsoft.com. Fixes for activation errors after Windows 10 installation. Select Go to Store and check if a valid licence is available for your system. If not, you will need to buy Windows from the Store. (Activation server is unavailable)', perform the following actions: 1. Check access to the Internet. To resolve the situation, check if you have Internet access, using the web browser Internet Explorer. If you do not have Internet access, contact your ISP for details. Try to activate the application once again after access to the Internet is.

A KMS host running on Windows 10 or Windows 8.1 can only activate computers running client operating systems.The following table summarizes KMS host and client requirements for networks that include Windows Server 2016 and Windows 10 clients.

Note

Note: Updates might be required on the KMS server to support activation of any of these newer clients. If you receive activation errors, check that you have the appropriate updates listed below this table.

Product key group	KMS can be hosted on	Windows editions activated by this KMS host
Volume License for Windows Server 2016	Windows Server 2012 Windows Server 2012 R2 Windows Server 2016	Windows Server Semi-Annual Channel Windows Server 2016 (all editions) Windows 10 LTSB (2015 and 2016) Windows 10 Professional Windows 10 Enterprise Windows 10 Pro for Workstations Windows 10 Education Windows Server 2012 R2 (all editions) Windows 8.1 Professional Windows 8.1 Enterprise Windows Server 2012 (all editions) Windows Server 2008 R2 (all editions) Windows Server 2008 (all editions) Windows 7 Professional Windows 7 Enterprise
Volume license for Windows 10	Windows 7 Windows 8.1 Windows 10	Windows 10 Professional Windows 10 Professional N Windows 10 Enterprise Windows 10 Enterprise N Windows 10 Education Windows 10 Education N Windows 10 Enterprise LTSB (2015) Windows 10 Enterprise LTSB N (2015) Windows 10 Pro for Workstations Windows 8.1 Professional Windows 8.1 Enterprise Windows 7 Professional Windows 7 Enterprise
Volume license for 'Windows Server 2012 R2 for Windows 10'	Windows Server 2008 R2 Windows Server 2012 Standard Windows Server 2012 Datacenter Windows Server 2012 R2 Standard Windows Server 2012 R2 Datacenter	Windows 10 Professional Windows 10 Enterprise Windows 10 Enterprise LTSB (2015) Windows 10 Pro for Workstations Windows 10 Education Windows Server 2012 R2 (all editions) Windows 8.1 Professional Windows 8.1 Enterprise Windows Server 2012 (all editions) Windows Server 2008 R2 (all editions) Windows Server 2008 (all editions) Windows 7 Professional Windows 7 Enterprise

Note

Windows Activation Servers Not Available Windows 7

Depending on which operating system your KMS server is running and which operating systems you want to activate, you might need to install one or more of these updates:

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• Installations of KMS on Windows 7 or Windows Server 2008 R2 must be updated in order to support activation of clients running Windows 10. For more information, see Update that enables Windows 7 and Windows Server 2008 R2 KMS hosts to activate Windows 10.
• Installations of KMS on Windows Server 2012 must be updated in order to support activation of clients running Windows 10 and Windows Server 2016, or newer client or server operating systems. For more information, see July 2016 update rollup for Windows Server 2012.
• Installations of KMS on Windows 8.1 or Windows Server 2012 R2 must be updated in order to support activation of clients running Windows 10 and Windows Server 2016, or newer client or server operating systems. For more information, see July 2016 update rollup for Windows 8.1 and Windows Server 2012 R2.
• Windows Server 2008 R2 cannot be updated to support activation of clients running Windows Server 2016, or newer operating systems.

A single KMS host can support an unlimited number of KMS clients. If you have more than 50 clients, we recommend that you have at least two KMS hosts in case one of your KMS hosts becomes unavailable. Most organizations can operate with as few as two KMS hosts for their entire infrastructure.

KMS can activate physical and virtual computers, but to qualify for KMS activation, a network must have a minimum number of computers (called the activation threshold). KMS clients activate only after this threshold is met. To ensure that the activation threshold is met, a KMS host counts the number of computers that are requesting activation on the network.

KMS hosts count the most recent connections. When a client or server contacts the KMS host, the host adds the machine ID to its count and then returns the current count value in its response. The client or server will activate if the count is high enough. Clients will activate if the count is 25 or higher. Servers and volume editions of Microsoft Office products will activate if the count is five or greater. The KMS only counts unique connections from the past 30 days, and only stores the 50 most recent contacts.

KMS activations are valid for 180 days, a period known as the activation validity interval. KMS clients must renew their activation by connecting to the KMS host at least once every 180 days to stay activated. By default, KMS client computers attempt to renew their activation every seven days. After a client's activation is renewed, the activation validity interval begins again.

KMS activation requires TCP/IP connectivity. KMS hosts and clients are configured by default to use Domain Name System (DNS). By default, KMS hosts use DNS dynamic update to automatically publish the information that KMS clients need to find and connect to them. You can accept these default settings, or if you have special network and security configuration requirements, you can manually configure KMS hosts and clients.

After the first KMS host is activated, the KMS key that is used on the first host can be used to activate up to five more KMS hosts on your network. After a KMS host is activated, administrators can reactivate the same host up to nine times with the same key.

If your organization needs more than six KMS hosts, you should request additional activations for your organization's KMS key—for example, if you have ten physical locations under one volume licensing agreement and you want each location to have a local KMS host.

Note

To request this exception, contact your Activation Call Center. For more information, see Microsoft Volume Licensing.

Computers that are running volume licensing editions of Windows 10, Windows Server 2016, Windows 8.1, Windows Server 2012 R2, Windows Server 2012, Windows 7, Windows Server 2008 R2 are, by default, KMS clients with no additional configuration needed.

If you are converting a computer from a KMS host, MAK, or retail edition of Windows to a KMS client, install the applicable KMS Client Setup Key. For more information, see KMS Client Setup Keys.

Did you upgrade from a retail store bought Windows 7 or Windows 8 license or was a preinstalled Windows 7 or Windows 8 OEM license?

When I upgrade a preinstalled (OEM) or retail version of Windows 7 or Windows 8/8.1 license to Windows 10, does that license remain OEM or become a retail license?

If you upgrade from a OEM or retail version of Windows 7 or Windows 8/8.1 to the free Windows 10 upgrade this summer, the license is consumed into it. Because the free upgrade is derived from the base qualifying license, Windows 10 will carry that licensing too.

If you upgrade from a retail version, it carries the rights of a retail version.

If you upgrade from a OEM version, it carries the rights of a OEM version.

Full version (Retail):

- Includes transfer rights to another computer.

- Doesn't require a previous qualifying version of Windows.

- Expensive

Upgrade version (Retail):

- Includes transfer rights to another computer.

- require a previous qualifying version of Windows.

Unable To Reach Windows Activation Servers

- Expensive, but cheaper than full version

OEM :

OEM versions of Windows are identical to Full License Retail versions except for the following:

- OEM versions do not offer any free Microsoft direct support from Microsoft support personnel

- OEM licenses are tied to the very first computer you install and activate it on

- OEM versions allow all hardware upgrades except for an upgrade to a different model motherboard

- OEM versions cannot be used to directly upgrade from an older Windows operating system

What happens if I change my motherboard?

As it pertains to the OEM license this will invalidate the Windows 10 upgrade license because it will no longer have a previous base qualifying license which is required for the free upgrade. You will then have to purchase a full retail Windows 10 license. If the base qualifying license (Windows 7 or Windows 8.1) was a full retail version, then yes, you can transfer it.

From the Windows 10 end user license agreement:

b. Stand-alone software. If you acquired the software as stand-alone software (and also if you upgraded from software you acquired as stand-alone software), you may transfer the software to another device that belongs to you. You may also transfer the software to a device owned by someone else if (i) you are the first licensed user of the software and (ii) the new user agrees to the terms of this agreement. You may use the backup copy we allow you to make or the media that the software came on to transfer the software. Every time you transfer the software to a new device, you must remove the software from the prior device. You may not transfer the software to share licenses between devices.

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