Hi, How about changing index option? If the issue occurs again, please help me collect the related event logs. Meanwhile, you can contact Adobe support for more insights. 1. Click Start -> type index in the search box -> select Indexing Options 2. Click Modify -> find and check your folder. Meanwhile, you may need to change some configurations in Outlook. Please consult in Office forum. http://social.technet.microsoft.com/Forums/en-US/outlook/threads Here is the similar post for reference: http://social.msdn.microsoft.com/Forums/en-US/windowsdesktopsearchdevelopment/thread/e37ce645-f22d-43dc-895f-bd794f7e1161Niki Han TechNet Community Support

Hello, We are making a software that offers PST file backup. We are creating a copy of PST file on the backup location (usually network), and are working directly with items inside PST file to find the differences from previous backup. In some scenarios (we don't know exactly when) when we are working with PST file on the backup location, Windows Search Indexer starts indexing that file, and that leads to significant performance decrease of the whole process, and in some cases - even PST file locking issues that causes errors in our code. We are not able to disable the indexing for PST files, as there's no way to determine programmatically the MAPI path to that file to make an exception. Stopping the Indexing service during the backup cannot be done either, as service restarts itself after a few seconds. See the details here: http://social.microsoft.com/Forums/en-US/partnerdevvs/thread/0ef1d0ad-f288-4829-8c9e-25d2f9205879/ Any advice would be highly appreciated. Thank you! Denis

Hi, How about changing index option? If the issue occurs again, please help me collect the related event logs. Meanwhile, you can contact Adobe support for more insights. 1. Click Start -> type index in the search box -> select Indexing Options 2. Click Modify -> find and check your folder. Meanwhile, you may need to change some configurations in Outlook. Please consult in Office forum. http://social.technet.microsoft.com/Forums/en-US/outlook/threads Here is the similar post for reference: http://social.msdn.microsoft.com/Forums/en-US/windowsdesktopsearchdevelopment/thread/e37ce645-f22d-43dc-895f-bd794f7e1161Niki Han TechNet Community Support

Hi Niki, I am not sure you've understood me correctly. I know how to set up the Index Options manually. What I need is to set the index options from within the code programmatically. And we don't have any Adobe products involved in this, why should I contact Adobe support?? And we've already tried the sample from the last link you've provided. For some reason it doesn't work currently in our environment. Any other thoughts? Thank you, Denis