Outlook unable to search emails downloaded from Google Apps Sync

If you have Google Apps Sync installed to download the emails from Google Mail and you are not able to search the emails, the method below may help you to resolve the problem:

Environment: Windows 7 + Outlook 2010
Problem: Try to use the search box within Outlook to search the emails, it keeps giving nothing and the index status is showing nothing to be indexed

Locate the following registry subkey:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Windows Search

Double-click the PreventIndexingOutlook registry entry.

In the Value data box, type 0, and then click OK.

If the above registry subkey "Windows Search" is not there, please create it and create PreventIndexingOutlook entry in there and set it to 0.

Exit the Registry and try to search now in Outlook.

Reference: http://support.microsoft.com/kb/972814/en-au