Except if one would assume that code signing as a whole is snake oil because the Certificate Authorities can't be trusted: http://www.h-online.com/security/news/item/Certified-online-banking-trojan-in-the-wild-1808898.html
Maybe you should just go and start reading and following the instructions. Noone is going to reexplain what's already been covered in detail over and over again. Yeah, so we are all doomed.
There is this funny thing called search box. Even more funny, I have the links in my signature (click the Spoiler button).
When i try to activate using above instructions it shows: Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Windows\system32>cd /D "%ProgramFiles%\Microsoft Office\Office15" C:\Program Files\Microsoft Office\Office15>cscript ospp.vbs /sethst:lunar21.no-i p.org Microsoft (R) Windows Script Host Version 5.8 Copyright (C) Microsoft Corporation. All rights reserved. ---Processing-------------------------- --------------------------------------- No Office KMS licenses were found on the system. --------------------------------------- ---Exiting----------------------------- C:\Program Files\Microsoft Office\Office15>cscript ospp.vbs /act Microsoft (R) Windows Script Host Version 5.8 Copyright (C) Microsoft Corporation. All rights reserved. ---Processing-------------------------- --------------------------------------- Installed product key detected - attempting to activate the following product: SKU ID: 1b686580-9fb1-4b88-bfba-eae7c0da31ad LICENSE NAME: Office 15, OfficeProPlusR_Grace edition LICENSE DESCRIPTION: Office 15, RETAIL(Grace) channel Last 5 characters of installed product key: 27GXM ERROR CODE: 0xC004F017 ERROR DESCRIPTION: The Software Licensing Service reported that the license is n ot installed. --------------------------------------- Installed product key detected - attempting to activate the following product: SKU ID: db56dec3-34f2-4bc5-a7b9-ecc3cc51c12a LICENSE NAME: Office 15, OfficeProPlusR_Trial edition LICENSE DESCRIPTION: Office 15, TIMEBASED_EVAL channel Last 5 characters of installed product key: 8FD64 <Product activation successful> --------------------------------------- --------------------------------------- ---Exiting----------------------------- C:\Program Files\Microsoft Office\Office15>cscript ospp.vbs /remhst Microsoft (R) Windows Script Host Version 5.8 Copyright (C) Microsoft Corporation. All rights reserved. ---Processing-------------------------- --------------------------------------- No Office KMS licenses were found on the system. --------------------------------------- ---Exiting----------------------------- C:\Program Files\Microsoft Office\Office15>cscript ospp.vbs /dstatus Microsoft (R) Windows Script Host Version 5.8 Copyright (C) Microsoft Corporation. All rights reserved. ---Processing-------------------------- --------------------------------------- SKU ID: 1b686580-9fb1-4b88-bfba-eae7c0da31ad LICENSE NAME: Office 15, OfficeProPlusR_Grace edition LICENSE DESCRIPTION: Office 15, RETAIL(Grace) channel BETA EXPIRATION: 01-01-1601 LICENSE STATUS: ---OOB_GRACE--- ERROR CODE: 0x4004F00C ERROR DESCRIPTION: The Software Licensing Service reported that the application is running within the valid grace period. REMAINING GRACE: 4 days (7076 minute(s) before expiring) Last 5 characters of installed product key: 27GXM --------------------------------------- SKU ID: db56dec3-34f2-4bc5-a7b9-ecc3cc51c12a LICENSE NAME: Office 15, OfficeProPlusR_Trial edition LICENSE DESCRIPTION: Office 15, TIMEBASED_EVAL channel BETA EXPIRATION: 01-01-1601 LICENSE STATUS: ---LICENSED--- ERROR CODE: 0x4004FC04 (for information purposes only as the status is licensed) ERROR DESCRIPTION: The Software Licensing Service reported that the application is running within the timebased validity period. REMAINING GRACE: 59 days (86333 minute(s) before expiring) Last 5 characters of installed product key: 8FD64 --------------------------------------- --------------------------------------- ---Exiting----------------------------- Pls anyone help me to solve this problem....