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Adobe makes 31+ desktop applications. 

• Which one are you asking about?
• Which operating system?
• Did this app ever work or is this a new installation?
• Please ensure your computer meets or exceeds the minimum system requirements to run Creative Cloud + all other apps you intend to use.
  https://helpx.adobe.com/creative-cloud/system-requirements.html

When you ask a question you need to provide some basic information
-Forum quick start https://community.adobe.com/t5/Community-Help/ASK-Forum-Success-Guide-Efficiently-using-the-forums/td-p/4791542
-https://community.adobe.com/t5/Get-Started/Questions-you-need-to-answer-to-receive-better-help/td-p/6199470
-https://community.adobe.com/t5/get-started/how-to-post-and-get-your-issue-resolved-or-what-do-you-need-to-know-to-solve-my-issue/td-p/11178657?page=1