On a power user's computer, the Indexer might index up to , items. If the Indexer indexes more than , items, you may begin to see performance issues. For more information, go to Size of the index database. The Indexer can index up to 1 million items. If the Indexer tries to index beyond that limit, it may fail or cause resource problems on the computer such as high usage of CPU, memory, or disk space.
By default, the Indexer indexes any Outlook mailboxes on the computer. If a mailbox contains more than 6 million items, the performance of the Indexer may degrade. For more information, go to the "Change Outlook settings" section.
As the number of indexed items grows beyond ,, the index database grows considerably regardless of the size of those items. The size of the items also affects database size. A database that contains either a few large files or a large number of smaller files can affect performance. Both factors together can compound the problem. The Indexer tries to compress the index data. However, this approach becomes less effective as the index database grows. To check the size of the index database, use the Size on disk property of the Windows.
Additionally, this Size value might include space that was used by or allocated to the file in the past, instead of using the current size. By default, Windows. To check the size of the file, follow these steps:. Check the Size on disk value. This property reflects the actual disk space that the database uses. You can use any of several approaches to improve the performance of Search and the Search Indexer. You can use this approach to reduce the number of items that are indexed and to reduce the size of the index database.
And then select a folder to exclude. For a more granular method to include or exclude items, open Searching Windows , and select Advanced Search Indexer Settings. In Indexing Options , select Modify , and then select or deselect locations to index. You can change how the Indexer treats specific file types identified by file extension or add and configure new file types.
Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Please rate your experience Yes No. This might take a while! Outlook indexing relies on the Windows Search Service, Run services. Sometimes it wont start, or you simply want to flush its contents and start again. I detest PST files with a passion! If you are not going to use the Windows Search feature or you think that it causes the slow performance of your computer, you can choose to disable it in your computer.
As what we have talked above, Windows Search service helps you get a faster result when you are searching particular content in your computer. Generally speaking, if you use the Windows Search feature very often and this feature makes no difference to your computer performance, you can keep the Windows Search service enabled in your computer. However, it is recommended to turn off the feature of Windows Search indexing if you don't use it often.
Sometimes, it might become the culprit of your computer's slow performance. If you discover that it is one of the causes of your computer poor performance, you can boost the running speed of your computer by turning off the Windows Search service.
By the way, turning off this feature does not mean that Windows Search won't work at all. You'll still have access to search. But the truth is that searches will take longer to finish. Don't know how to turn on or turn off Windows Search service in your Windows 10 computer? You can use a tool to do that for you.
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