微软认证桌面支持专员（MCDST）首次推出是在Windows XP时期，微软发现在桌面操作系统以及应用程式维护的需求增加，而现有的MCSE与MCSA又过于偏向企业级应用环境，因此微软特别为桌面应用环境设计了MCDST认证，持有此认证的专业人员被视为对Windows XP的客户端操作系统以及其上的应用程式的维护与技术支持的能力，能够针对安装Windows XP的电脑执行维护与故障排除工作。
MCDST只需要两科必考科目，无需任何选考科目：
Exam 70-271: Supporting Users and Troubleshooting a Microsoft Windows XP Operating System
Exam 70-272: Supporting Users and Troubleshooting Desktop Applications on a Microsoft Windows XP Operating System
此认证的继承者为：
- MCITP: Enterprise Support Technician
- MCITP: Customer Support Technician
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