今日安裝smartrf flash programmer失敗得到如下一個錯誤，還以爲是安裝包問題，嘗試了幾個版本，不得其解，後通過查找錯誤碼，發現原來是系統安裝服務沒有開啓導致的，只需將其設爲手動或者自動開啓，然後啓動服務即可。
HRESULT: 0x80070422
Cause
Windows Modules Installer service was not started / does not exist
Resolution
Check Windows Modules Installer service:
Click Start button and type "services.msc" without quotes and hit enter
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In the Services window locate Windows Modules Installer service.
Click right mouse button on Windows Modules Installer service and click Properties.
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Check Service status string in window opened. It should be "Started".
Startup type should be set to "Manual".
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原文地址：http://kb.parallels.com/en/117788
