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February 22, 2026
Answered

“Adobe Dreamweaver 2021.app” is damaged and can’t be opened. This file was downloaded on an unknown date.

Dreamweaver suddenly stopped opening on Sequoia 15.6
Getting message: “Adobe Dreamweaver 2021.app” is damaged and can’t be opened. This file was downloaded on an unknown date.”

      Nancy OShea
      Nancy OSheaCorrect answer
      Community Expert
      February 23, 2026

      Try Restoring Preferences. And restart your computer. 

      https://helpx.adobe.com/dreamweaver/kb/restore-preferences-dreamweaver.html

       

      Nancy O'Shea— Product User & Community Expert
      View reply

      1 reply

      Nancy OShea
      Community Expert
      Nancy OSheaCommunity ExpertCorrect answer
      Community Expert
      February 23, 2026

      Try Restoring Preferences. And restart your computer. 

      https://helpx.adobe.com/dreamweaver/kb/restore-preferences-dreamweaver.html

       

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      Nancy O'Shea— Product User & Community Expert
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