How to downgrade from Windows 10 to Window's 8.1

How to revert back to Windows 8 from Windows 10

How to revert back to Windows 8 from Windows 10

Windows 10 Specifications

Specifications

These are for a pre-released version of Windows 10 and are subject to change.

System requirements

If you want to upgrade to Windows 10 on your PC or tablet, here’s what it involves.

• Latest OS: Make sure that you are running the latest version,

either Windows 7 SP1 or Windows 8.1 Update.Don’t know which version you are running?

Check here to find out.Need to download the latest version?

Click here for Windows 7 SP1 or Windows 8.1 Update.

• Processor: 1 gigahertz (GHz) or faster processor or SoC
• RAM: 1 gigabyte (GB) for 32-bit or 2 GB for 64-bit
• Hard disk space: 16 GB for 32-bit OS 20 GB for 64-bit OS
• Graphics card: DirectX 9 or later with WDDM 1.0 driver
• Display: 1024x600

Important Notes

• The upgradeability of a device has factors beyond the system specification. This includes driver and firmware support, application compatibility and feature support, regardless of whether or not the device meets the minimum system specification for Windows 10.
• If your PC or tablet is currently running Windows 7 SP1 or Windows 8.1 Update, you can check to see if it meets the requirements by using ‘Check my PC’ in the Get Windows 10 app.
• Applications, files and settings will migrate as part of the upgrade, however some applications or settings may not migrate.
  • For Anti-virus and Anti-malware applications, during upgrade Windows will check to see if your Anti-virus or Anti-malware subscription is current. Windows will uninstall your application while preserving your settings. After upgrade is complete, Windows will install the latest version available with the settings that were set prior to upgrade. If your subscription is not current, upgrade will enable Windows defender.
  • Some applications that came from your OEM may be removed prior to upgrade.
  • For certain third-party applications, the “Get Windows 10” app will scan for application compatibility. If there is a known issue that will prevent the upgrade, you will be notified of the list of applications with known issues. You can choose to accept and the applications will be removed from the system prior to upgrade. Please make sure that you copy the list before you accept the removal of the application.

Feature Deprecation Section

• If you have Windows 7 Home Premium, Windows 7 Professional, Windows 7 Ultimate, Windows 8 Pro with Media Centre or Windows 8.1 Pro with Media Centre and you install Windows 10, Windows Media Centre will be removed.
• Watching DVDs requires separate playback software
• Windows 7 desktop gadgets will be removed as part of installing Windows 10.
• Windows 10 Home users will have updates from Windows Update automatically available.
• Solitaire, Minesweeper and Hearts Games that come pre-installed on Windows 7 will be removed as part of installing the Windows 10 upgrade. Microsoft has released our version of Solitaire and Minesweeper called the “Microsoft Solitaire Collection” and “Microsoft Minesweeper”.
• If you have a USB floppy drive, you will need to download the latest driver from Windows Update or from the manufacturer's website.
• If you have Windows Live Essentials installed on your system, the OneDrive application is removed and replaced with the inbox version of OneDrive.

Additional requirements to use certain features

• Cortana is only currently available on Windows 10 for the United States, United Kingdom, China, France, Italy, Germany and Spain.
• Speech recognition will vary by device microphone. For better speech experiences, you will need a:
  • High fidelity microphone array
  • Hardware driver with Microphone array geometry exposed
• Windows Hello requires specialised illuminated infrared camera for facial recognition or iris detection or a fingerprint reader which supports the Window Biometric Framework.
• Continuum is available on all Windows 10 editions by manually turning “tablet mode” on and off through the Action Centre. Tablets and 2-in-1’s with GPIO indicators or those that have a laptop and slate indicator will be able to be configured to enter “tablet mode” automatically.
• Music and Video stream through the Xbox Music or Xbox video available in certain regions. For the most up to date list of regions, please go to Xbox on Windows website.
• Two factor authentication requires the use of a PIN, Biometric (fingerprint reader or illuminated infrared camera) or a phone with Wi-Fi or Bluetooth capabilities.
• The number of applications that can be snapped will depend upon the minimum resolution for the application.
• To use touch, you need a tablet or a monitor that supports multi-touch (more info)
• Microsoft account required for some features
• Internet access (ISP fees might apply)
• Secure boot requires firmware that supports UEFI v2.3.1 Errata B and has the Microsoft Windows Certification Authority in the UEFI signature database
• Some IT administrators may enable Secure Logon (Ctrl + Alt + Del) before bringing you to the log in screen. On tablets without a keyboard, a tablet with the Windows button maybe required as the key combination on a tablet is Windows button + Power button.
• Some games and programs might require a graphics card compatible with DirectX 10 or higher for optimal performance
• BitLocker To Go requires a USB flash drive (Windows 10 Pro only).
• BitLocker requires either Trusted Platform Module (TPM) 1.2, TPM 2.0 or a USB flash drive (Windows 10 Pro and Windows 10 Enterprise only)
• Client Hyper-V requires a 64-bit system with second level address translation (SLAT) capabilities and additional 2 GB of RAM (Windows 10 Pro and Windows 10 Enterprise only).
• Miracast requires a display adaptor which supports Windows Display Driver Model (WDDM) 1.3, and a Wi-Fi adapter that supports Wi-Fi Direct.
• Wi-Fi Direct Printing requires a Wi-Fi adapter that supports Wi-Fi Direct and a device that supports Wi-Fi Direct Printing.
• To install a 64-bit OS on a 64-bit PC, your processor needs to support CMPXCHG16b, PrefetchW and LAHF/SAHF
• InstantGo works only with computers designed for Connected Standby.
• Device encryption requires a PC with InstantGo and TPM 2.0.

Upgrade Editions

We’ll keep you on like-to-like editions of Windows. For instance, if you are using Windows 7 Home Premium, you’ll upgrade to Windows 10 Home.

Upgrade from Windows 7*

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From Edition	To Edition
Windows 7 Starter	Windows 10 Home
Windows 7 Home Basic
Windows 7 Home Premium
Windows 7 Professional	Windows 10 Pro
Windows 7 Ultimate

Upgrade from Windows 8**

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From Edition	To Edition
Windows 8.1***	Windows 10 Home
Windows 8.1 Pro	Windows 10 Pro
Windows 8.1 Pro Student
Windows 8.1 Pro WMC
Windows Phone 8.1****	Windows 10 Mobile

“N” and “KN” editions follow the upgrade path of the parent edition (e.g. Windows 7 Professional N upgrades to Windows 10 Pro).

Some editions are excluded: Windows 7 Enterprise, Windows 8/8.1 Enterprise and Windows RT/RT 8.1. Active Software Assurance customers in volume licensing have the benefit to upgrade to Windows 10 enterprise offerings outside of this offer.

Windows 10 Full Localisation Languages

Arabic (Saudi Arabia), Bulgarian (Bulgaria), Chinese (Simplified, China), Chinese (Hong Kong), Chinese (Traditional, Taiwan), Croatian (Croatia), Czech (Czech Republic), Danish (Denmark), Dutch (Netherlands), English (United Kingdom), English (United States), Estonian (Estonia), Finnish (Finland), French (France), French (Canada), German (Germany), Greek (Greece), Hebrew (Israel), Hungarian (Hungary), Italian (Italy), Japanese (Japan), Korean (Korea), Latvian (Latvia), Lithuanian (Lithuania), Norwegian, Bokmål (Norway), Polish (Poland), Portuguese (Brazil), Portuguese (Portugal), Romanian (Romania), Russian (Russia), Serbian (Latin, Serbia), Slovak (Slovakia), Slovenian (Slovenia), Spanish (Spain, International Sort), Spanish (Mexico), Swedish (Sweden), Thai (Thailand), Turkish (Turkey), Ukrainian (Ukraine)

Additional languages available as Language Interface Packs

Office 2010 Unable to activate Error : 0x80070005

Cause

Root cause appears to be related to permissions on disk class device objects in the registry – specifically the security descriptors related to the Security value under

HKLM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}\Properties.

RESOLUTION :

Caution

• Incorrectly editing the registry may severely damage your system. Before making changes to the registry, you should back up any valued data on your computer. 

Notes

• To open Registry Editor, click Start, click Run, type regedit, and then click OK.

1) Use regedit and rename the Security value under

HKLM\CurrentControlSet\Control\Class\{4D36E967- E325-11CE-BFC1-08002BE10318}\Properties to Security.OLD

2) Reboot the machine

3) Open a command prompt and browse to C:\Program Files\Microsoft Office\Office14 (or C:\Program Files (x86)... if a 32-bit version of Office has been installed on a 64-bit version of Windows)

4) Run command lines similar to the following:

cscript.exe "C:\Program Files\Microsoft Office\Office14\ospp.vbs" /osppsvcrestart

cscript.exe "C:\Program Files\Microsoft Office\Office14\ospp.vbs" /act

5) If all is well, running the second of the above command lines should result in a successful activation of Office 2010. To confirm this, open an Office 2010 application, go to the File tab/Help, and check for

The installation of Microsoft Office 2010 requires that MSXML version 6.10.1129.0 be installed on your computer. Install the component and re-run the setup.

RESOLUTION:

1. Give permission to the registry key HKEY_CLASSES_ROOT\TypeLib\{F5078F18-C551-11D3-89B9-

0000F81FE221}\6.0\0\win32 and then try installing Office

To assign permissions to a registry key

1. Open Registry Editor.
2. Click the key to which you want to assign permissions.
3. On the Edit menu, click Permissions.
4. Assign an access level to the selected key as follows: 
• To grant the user permission to read the key contents, but not save any changes made to the file, under Permissions for name, for Read, select the Allow check box.
• To grant the user permission to open, edit, and take ownership of the selected key, under Permissions for name, for Full Control, select the Allow check box.
5. To grant the user special permission in the selected key, click Advanced.
6. If you are assigning permissions to a subkey and you want the inheritable permissions assigned to the parent key to apply to the subkey also, click Advanced and select theInherit from parents the permission entries that apply to child objects. Include these with entries explicitly defined here check box.

Caution

• Incorrectly editing the registry may severely damage your system. Before making changes to the registry, you should back up any valued data on your computer. 

Notes

• To open Registry Editor, click Start, click Run, type regedit, and then click OK.
• You must have appropriate permissions to make changes to a registry key. To maintain security when making changes to a registry key for which you need administrative credentials, log in as a member of the Users group and run Regedit as an administrator by right-clicking the Regedit icon, clicking Run as, and clicking an account in the local Administrators group. The Regedit icon does not appear by default from the Start menu. To access the icon, open the Windows or WINNT folder on your computer. 
• If you own a registry key, you can specify the users and groups that can open that key. To determine who can open your registry keys, you need to assign permissions to them. You can add or remove users or groups from those authorized to access your registry keys at any time.
• The Special Permissions check boxes indicate whether custom permissions have been set for this key, but you cannot set special permissions by clicking these check boxes. Click Advanced to set special permissions.

2. Change the reg value from %SystemRoot%\System32\msxml6.dll to

c:\windows\System32\msxml6.dll and try to reinstall

3. Try rebooting the machine and then follow the step 4

4: Then try installing Office

Unable to activate Office 2013 Error :0x8007000

Unable to activate Office 2013 Error :0x8007000

Unable to install Office 2013 : Error : "Something went wrong"

Unable to install Office 2013 :  Error :  "Something went wrong"

Resolution :

Please click on the link mentioned below

http://support.microsoft.com/kb/2827031

If the steps mentioned in the above article does not resolve the issue try the following steps.

1. Enable Hidden admin account

Windows 8/8.1:

Press the Windows key to open the Metro interface. 

• Click on the bottom of page to access all applications.
• Right click on the Command Prompt > Run as Administrator.
• Enter the following command:

  • net user administrator /active:yes 

• Validate by pressing Enter.

Windows 7/Windows 8/ Windows 9.1 :

• Press the Windows key type CMD 
• Right click on CMD and click on run as administrator
• Enter the following command

• net user administrator /active:yes 

• Validate by pressing Enter.

Try Running the fix it Mentioned in : http://support.microsoft.com/kb/2739501

Reboot the machine in Hidden Admin Account (When you log in it would Say "Administrator")

Once you  log in to administrator account and try to install Office.

Once the installation is successful try opening office application and check if everything is working fine,

Note : Make sure to disable the hidden admin account by  following the instruction mentioned below.

Windows 7/Windows 8/ Windows 8.1 :

• Press the Windows key type CMD 
• Right click on CMD and click on run as administrator
• Enter the following command

• net user administrator /active:No

• Validate by pressing Enter.

"Couldn't install" message when you install Office 2013 or Office 365"

Resolution

Use Disk Cleanup to clear the system of unwanted space, follow these steps:

In Windows 7

1.       Click Start

2.       Type Disk Cleanup in the search box and then, in the list of results, click Disk Cleanup.

3.       If you see a Drives list, choose the hard disk drive you want to clean, and then click OK.

4.       In the Disk Cleanup dialog box, on the Disk Cleanup tab, choose the files to delete, and then click OK.

5.       In the message that appears, click Delete files.

See a video on how to delete files using Disk Cleanup in Windows 7: Delete files using Disk Cleanup.

In Windows 8

1.       With a mouse, move your pointer into the upper-right or lower-right corner, and then move it up or down to clickSearch.
With touch, swipe in from the right edge, and then tap Search.

2.       Type Disk Cleanup in the search box, and then tap or click Settings.

3.       Tap or click Free up disk space by deleting unnecessary files under results.

4.       If you see a Drives list, choose the hard disk drive you want to clean, and then tap or click OK.

5.       In the Disk Cleanup dialog box, on the Disk Cleanup tab, choose the files to delete, and then tap or click OK.

6.       In the message that appears, tap or click Delete Files.

Once the cleanup is done, please try reinstalling Office. If you still get the same message, move some photos or music to another disk drive so that you can install Office successfully.

If the problem continues to occur, temporarily turn off your antivirus software, firewall, and proxy settings.

Temporarily turn off the antivirus software

Turn off the antivirus software on your computer, install Office, and then turn the antivirus software back on. If you need information on how to turn off your antivirus software, check which software is installed on your computer, and then go to the manufacturer’s website for information. If you do not know which antivirus software is installed on the computer, follow these steps.

In Windows 8 or Windows 8.1

1.       Open Control Panel.

2.       Click System and Security.

3.       Under Action Center, click Review your computer’s status and resolve issues.

4.       Click Security to find the name of the antivirus software.

In Windows 7

1.       Open Control Panel.

2.       Click System and Security.

3.       Under Action Center, click Review your computer’s status.

4.       Click Security to find the name of the antivirus software.

Temporarily turn off the firewall

Turn off the firewall on your computer, install Office, and then turn on the firewall again.

If you need any asisstance

In Windows 8 or 8.1, follow these steps to turn Windows Firewall off and on.

In Windows 7, follow these steps to turn Windows Firewall off and on.

If you are using a firewall from another manufacturer, go to their website for information about how to temporarily disable the firewall.

Temporarily turn off proxy settings

If you use your computer both at home and at work, proxy settings might cause problems when you are installing Office. Try disabling proxy settings in Windows by following these steps:

1.       Go to Control Panel, and open Internet Options.

2.       Click the Connections tab, and then click LAN settings.

3.       If the box next to Use a proxy server for your LAN is selected, clear it.

4.       Install Office.

If the problem continues, contact your IT department at work for additional help. Or, you can try to install Office at work instead of at home.