Hi,
Would please follow the steps below to try troubleshooting the issue:
1. Please go to Control Panel and try running a repair of your Office installation to check the result.
http://office.microsoft.com/en-in/outlook-help/repair-office-programs-HA010357402.aspx
2. Open task manger and end integratedoffice.exe process, and then test the issue again.
Run the FIX IT from the following article to remove the integratedoffice.exe from the registry as well.
http://support.microsoft.com/kb/2809219
3. Restart the computer in Clean Boot and install Office 365. Follow the steps:
http://support.microsoft.com/kb/929135
Note: After you have finished troubleshooting in clean boot, ensure you restart the computer in normal mode.
You may also refer to the thread links below which discusses about the same issue and check if it helps:
http://answers.microsoft.com/en-us/office/forum/office_2013_release-office_install/something-went-wrong-product-busy-with-other-tasks/841df4ab-a6bb-48f5-96e9-7f4f4a8c4ca6
Thanks.
Steve Fan
TechNet Community Support
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