Win7/Win8.1 upgrade Win10 official version of the common problem collection

  
Microsoft on July 29 launched the official version of Win10, a lot of users have been upgraded on the line, especially Win7 and Win8.1 system users, then Win7/Win8 What problems will the .1 system upgrade to Win10 official version? The following will answer the common problems of Win10/Win8.1 system upgrade Win10 official version.

When is Win10 launched?
Win10 will be released on July 29, 2015.
What is the significance of booking a free upgrade to Win10?
We will provide a free upgrade to Win10 for eligible Windows 7 SP1, Windows 8.1 updates and Windows Phone 8.1 devices for a limited time. This allows you to take advantage of this free offer and experience the system first after Win10 is released.
Can you really upgrade for free?
Yes. Win10 is a free upgrade to the qualifying Win7 SP1, Win8.1 update and Windows Phone 8.1 devices. This free upgrade is available for one year after the release of Win10. After the upgrade, you can enjoy Win10.
Which devices meet the free upgrade conditions?
Although our goal is to make most devices running Win7 SP1, Win8.1 updates, and Windows Phone 8.1 meet the upgrade requirements, some hardware/software requirements are set and the availability of features may vary from device to device. The device must be connected to the internet and enable Windows updates.
Note: You may be required to pay for your ISP. Some versions are not included in the upgrade, including Win7 Enterprise, Win8/8.1 Enterprise, and Windows RT/RT 8.1. In addition to this offer, valid software subscriptions for Volume Licensing also guarantee customers the benefits of upgrading to Win10 Enterprise Products/Services. The ability to upgrade Windows Phone 8.1 devices to Win10 may vary by OEM, mobile carrier or host.
How to book a free upgrade?
You can get a free upgrade by purchasing the Win10 app “. To find the app:
• Click the small Windows icon at the far right of the taskbar.
• Click on “Book a free upgrade" in the app window.
• Enter your email address to confirm this reservation.
• Everything is set. You are not responsible for any obligation and can cancel your reservation at any time. Win10 will be released later this year and you will be automatically notified when the system is available for installation.
Do you need to book separately for each of my eligible devices?
Yes, subscriptions are associated with devices, not users, so if you want to book a free upgrade for each device, you'll need to complete this process separately for each device.
“Get Win10 Application”What is it?
 Get Win10 Application" is provided to support free upgrades for PCs and tablets running Win7 Service Pack 1 (SP1) and Win8.1 updates. The app manages subscriptions, provides information about Win10, and an upgrade advisor who can check if your device is compatible with Win10.
Why can't I see the "Win10 app"?
On most PCs running Win7 Service Pack 1 (SP1) and Win8.1 updates, "Get Win10 App" is available on PCs.
You will not see the app in the following cases:
• Your device is not running Win7 SP1 or Win8.1 updates.
• Need to check the version of Windows you are running? View here for related instructions
• You are running the Enterprise Edition of Windows, which does not meet the conditions of this offer.
• Windows AutoUpdate is not enabled on your device.
• Your device does not meet the minimum system requirements.
• Your device is not connected to the internet.
• However, if your device is eligible, we will continue to research updates that improve the device experience (such as releasing new drivers).
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