Main article: Development of Windows Vista
Microsoft started the company working on development plans for Windows Vista (also known as “Longhorn”) in 2001, before the introduction of Windows XP. Originally scheduled for release late in 2003 as a minor step between Windows XP (code name “Whistler”) and “Blackcomb” (now known as Windows 7). Gradually, “Longhorn” was assimilating many of the most important and innovative, as well as some of the technologies that were to form “Blackcomb”, so its release date had to be postponed several times. Many Microsoft developers also focused on the task of improving the security of Windows XP. Faced with ongoing delays and concerns about the new features, Microsoft announced on August 27, 2004 that it was necessary to make some adjustments. The original “Longhorn”, based on the source code for Windows XP, was discarded, and the development of Vista begin again based on the code of Windows Server 2003, incorporated only the features required for publication. Some previously announced features such as WinFS were discarded or were postponed, and established a new software development methodology called “Lifecycle of security” in an effort to address concerns about the safety of Windows code.
After that “Longhorn” Windows Vista to become, began an unprecedented number of beta testing program, involving hundreds of thousands of volunteers and companies. In September 2005, Microsoft began to spread the regular Community Technology Previews (CTP) to beta testers. The first of these was distributed at the 2005 Microsoft Professional Developers Conference, and was subsequently released to beta testers and Microsoft Developer Network subscribers. The building followed incorporated most of the features planned for the end product, as well as a number of changes in the user interface, based largely on feedback from beta testers. I believe Windows Vista is typically completed with the publication of the “February CTP”, released on February 22, 2006, and much of the rest of the work focused on stability, performance, implementation and documentation of the final version product. Beta 2, released in late May, was the first building that was made available to the general public through Microsoft’s Customer Preview Program. More than five million people downloaded it.
Advertising Windows Vista at Microsoft building Argentina
Although Microsoft had hoped that the operating system available worldwide for Christmas 2006, it was announced in March that year, the launch date would be postponed until January 2007, to give more time to companies for Construction of new drivers that were compatible with the new operating system. For much of 2006, analysts and bloggers speculated that Windows Vista would be delayed further, due to antitrust concerns raised by the European Commission and South Korea, and due to a lack of progress in the beta version. However, the November 8, 2006 Microsoft announced the completion of Windows Vista, coming to an end the development of longer operating system from that company.
The expectations created by Microsoft regarding Vista, disappointed many users due to the huge demand for services that should have a Vista computer to run normally. Likewise, in its early years were large number of compatibility problems with programs and hardware drivers because they do not work or there are no versions for Windows Vista. Many companies and universities have chosen not to install Vista on their machines for compatibility problems with programs from Windows XP versions, as it requires an investment because of the need to buy new computers to run Vista.

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