Windows Vista :2006
Microsoft hyped Windows Vista after the company spent a lot of resources to develop a more polished appearance. Vista had interesting visual effects but the OS was slow to start and run. The 32-bit version, in particular, didn't enable enough RAM for the memory-hungry OS to operate properly.
Microsoft tightened licensing rights and made it more work to activate Windows. The company also peeled back user control of the operating system's internal workings.
Microsoft lost market share to Apple and Linux variants. Vista's flaws -- coupled with the fact that many older computers lacked the resources to run the system -- led to many home and business users staying with XP.
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