Why is the "Junk" button greyed out in my Outlook 2010 navigation when I select an email from my Junk E-Mail folder?
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Thank you for contacting Microsoft community and We will be glad to assist you with your concern.
As I understand you are unable to use the Junk option for an email. Let me help you with the issue.
You may open Outlook in its application safe following the steps from below:
Click Start, go to
Programs, go to Accessories, click
Run, type outlook /safe.
If the application works fine safe mode, try disabling the add ins for the application and check the result,
If the issue persists, then create new Outlook profile following the steps from the article:
Reply for further assistance.
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