Reduce the size of a data file

A data file is a Personal Folders file (.pst). If you delete items from a data file, the size of the file will not change unless you compact the file. Compacting the file might take several minutes.

  1. On the File menu, click Data File Management.

  2. Click the data file that you want to compact, and then click Settings.

  3. Click Compact Now.

Note:  When you compact a .pst file, you do not have to exit Microsoft Outlook.

Connect with an expert
Contact us
Expand your skills
Explore training

Was this information helpful?

Thank you for your feedback!

Thank you for your feedback! It sounds like it might be helpful to connect you to one of our Office support agents.

×