Quick Answer: Why Is My Outlook Data File So Large?

Why is my Outlook OST file so large?

OST file contains entire mailbox data which has been gathering since your user account has been created.

From then, none of the data has been deleted and OST files have become oversized creating an error “ OST file too large”.

The large sized OST file contains the components such as: Hidden items..

How do I free up space in Outlook without deleting?

Some ways you can prevent your mailbox from being cluttered include:Archive older items. Put any items you want to keep in an archive to free up space. … Empty the “Deleted Items” folder. … Empty the “Junk Email” folder. … Store attachments outside your mailbox.

How do I know the size of my PST file?

To see the size of your folders in Outlook:Right-click the folder you want to check, and select Data File Properties. In Outlook 2019, select Properties.Select Folder Size.The Folder Size dialog box shows the size of the folder and its subfolders in kilobytes.

How large can an Outlook data file be?

By default, a Unicode pst-file or ost-file can grow as large as 20GB in Outlook 2007 and 50GB in Outlook 2010, 2013, 2016, 2019 and Office 365. However, the technical limit lies at 4194304GB (which is 4096TB or 4PB) and the default limit can be adjusted. The 2GB limit applies to ANSI formatted pst- and ost-files.

Is not Outlook data file?

Well, “PST is not an Outlook data file” error message is signifying that your Outlook PST file is not accessible and has become corrupted. Generally, Outlook users come across this error when PST file corrupted or damaged due to virus attack, header issues, improper import, bad CRC and other similar factors.

Does Outlook have a cache?

Microsoft Outlook stores files you’ve used so that it can easily access them again. These files are known as cached files and can be safely deleted. Clear the Outlook cache if old data remains after you delete it, something that may happen when you remove and reinstall Outlook add-ins.

Is it safe to delete OST file?

Is deleting an OST always 100% safe? As mentioned, the OST file might contain data that hasn’t been synced to the mailbox yet. That will be lost if you delete the file. But: You cannot screw up your mailbox or Outlook by deleting the file.

What do I do when my PST file is too big?

Alternate Solution to Handle Outlook PST Too Large Size Moreover, there is also an alternate way to handle large PST files is to split or divide them. You can try PST Split Tool to split Outlook PST file easily. Hence, by splitting the PST files the problem of a large PST file can be overcome.

How do I fix my Outlook data file?

Repair an Outlook data file (. pst) fileExit Outlook and browse to one of the following file locations: … Open SCANPST. … Select Browse to select the Outlook Data File (. … Choose Start to begin the scan.If the scan finds errors, choose Repair to start the process to fix them.More items…

Is there a size limit on OST files?

OST files are Outlook offline data files. The OST file format has a maximum file size that depends on the version of Outlook you’re running: Outlook 2010 and later support an OST file size of up to fifty gigabytes (50GB) Outlook 2007 and 2003 and earlier support an OST file size of up to twenty gigabytes (20GB)

What is the difference between OST and PST?

Difference b/w Outlook OST and PST file: OST is the offline folder created by the MS Outlook and Server to store offline copies of data whereas PST not created by the Outlook or Exchange Server. … PST files are friendly for the backup, as you can store them anywhere or can easily transfer from one system to another.

How do I reduce the size of my PST file?

Reduce the size of an Outlook Data File (. pst)Click the File tab.Click Account Settings, and then click Account Settings.On the Data Files tab, click the data file that you want to compact, and then click Settings.Click Compact Now.

How can I open a large PST file?

Step 1: Download and install Yodot Outlook PST Repair tool on your computer. Step 2: Launch the software and go for Open PST File (to select the large Outlook PST file) or Find PST File (to find and select the broken/large PST) or Select Outlook Profile (to choose PST file if you have many accounts).

Where is my Outlook data file located?

The offline Outlook Data File (. ost) is also saved at drive:\Users\user\AppData\Local\Microsoft\Outlook….File locationsIn Outlook, click the File tab.In right pane, click Account Settings, and then click Account Settings.On the Data Files tab, click an entry, and then click Open Folder Location.