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I have the same issue in Office 2010. I cannot see free/busy in my calendar. &nbsp;I also lose organizer rights so when I delete the invite, the reminder does not remove for the attendee's calendars. &nbsp;I checked OWA and I cannot see the scheduling assistant tab for any calendar entries I have where others have been invited to attend. &nbsp;I tried the solution above Outlook.exe /cleanfreebusy. &nbsp;This did not fix the issue. &nbsp;I checked and there are no other delegates in my Outlook. &nbsp;There is another user that also just have Office 2010 installed that is having the same issue. 
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I have the same issue in Office 2010. I cannot see free/busy in my calendar.  I also lose organizer rights so when I delete the invite, the reminder does not remove for the attendee's calendars.  I checked OWA and I cannot see the scheduling assistant tab for any calendar entries I have where others have been invited to attend.  I tried the solution above Outlook.exe /cleanfreebusy.  This did not fix the issue.  I checked and there are no other delegates in my Outlook.  There is another user that also just have Office 2010 installed that is having the same issue.

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Thank you vinaykrai for your guided resolution path. I have been troubleshooting this very issue with a lone user. I have tried everything, just short of a new profile, which was the next step. Your post confirms my hunch.<br />
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User does, in fact have calendar ease via OWA. That is when it cemented it for me, that the Outlook client was the culprit.<br />
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Thank you again. So often &quot;fix it&quot; steps are not as clear and simple as yours. Very nice.
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Thank you vinaykrai for your guided resolution path. I have been troubleshooting this very issue with a lone user. I have tried everything, just short of a new profile, which was the next step. Your post confirms my hunch.

User does, in fact have calendar ease via OWA. That is when it cemented it for me, that the Outlook client was the culprit.

Thank you again. So often "fix it" steps are not as clear and simple as yours. Very nice.

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I have recently installed an exchange 2010 server and I have one user who cannot see anything from anyones free/busy as shown in the photo below. &nbsp;He is using Outlook 2010 as well.<br />
&nbsp;<a href="https://filedb.experts-exchange.com/incoming/2010/09_w38/349342/Untitled.jpg" target="_blank" title="Calendar (105 KB)"><img alt="Calendar" class="file-block lazyload" style="max-width: 727px;" data-src="https://filedb.experts-exchange.com/incoming/2010/09_w38/349342/Untitled.jpg" /></a>
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Untitled.jpg

I have recently installed an exchange 2010 server and I have one user who cannot see anything from anyones free/busy as shown in the photo below.  He is using Outlook 2010 as well.
 

One user can not see free busy in Outlook 2010

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.