Outlook Calendar invitation tracking issue

  • Thread starter Demetri Styliaras
  • Start date Views 1,521

Demetri Styliaras


I have a user who created a meeting. The recepients have started to respond and some are accepted and rejected. The weird part is that when the user tries to track the responses, only the rejected ones appear. The accepted ones do not show up in teh tracking. In the inbox you can see the accepted messages. It seems that they are not being processed, but the rejected ones are.

Anybody has any clue?

Thank you,


Sally Tang


What"s the version of your Outlook?

Can you see all the attenders in the attenders list, such as the screenshot below? What"s the status for the attenders who accepted the meeting request in the table?

At this time, I suggest trying the following steps to see if the problem can be resolved.

Step 1:


Run Outlook /cleansniff command to open Outlook.

Note: This command overrides the programmatic lockout that determines which of your computers (when running Outlook simultaneously) processes meeting items. The lockout process helps prevent duplicate reminder messages. This switch clears the lockout on the computer it is used, enabling Outlook to process meeting items.

If the issue persists, please edit the registry key to change the idle time for Sniffer.

Step 2:


1. Start Registry Editor (Regedit.exe).

2. Locate the following key in the registry key:


Note: xxx is the version number of Outlook. If you are using Outlook 2010, it is 14.0. If you are using Outlook 2007, it is 12.0. If it is Outlook 2003, it is 11.0.

3. On the Edit menu, point to New, and then click DWORD Value. Type the name of the new value as AutoProcessIdleTime, and then press ENTER.

4. On the Edit menu, click Modify, and then type the following information:

Value data: 10000

Base: Decimal

5. Click OK. Quit Registry Editor.

6. Restart Outlook and check the issue again. You can create a new meeting request and check the results again.

Hope it helps.

Sally Tang


Sally Tang


I am writing to see how everything is going with this issue. Is the problem resolved? If there is anything I can do for you, please feel free to let me know.

Sally Tang


Sally Tang


As I have not heard from you for several days. I will go ahead and close this thread. If this issue is not resolved or you have any questions, please feel free to reply to us and this thread will be re-opened.

Sally Tang