Summary :

Outlook file size limit

What is Outlook file size limit? How to send large files via email? How to increase Outlook file size limit? In this post, MiniTool will focus on these questions and explore the answers i by one.

Quick Navigation :

  • An Overview of Outlook File Size Limit
  • How to Transport Files over Outlook File Size Limit
  • How to Increment Outlook File Size Limit
  • User Comments

An Overview of Outlook File Size Limit

Since from the Outlook 2010 version, desktop applications tin can open .pst files and create .ost files within 50GB. However, you may receive the following error when you lot are trying to open a .pst file over 50GB.

Tip: Due to mail service server limitation, all the versions of Outlook and Office 365 take the Outlook zipper limits of xx-25MB.

cannot expand the folder

The reason backside the fault is the Outlook file size limit. Nevertheless, you lot can send files over 50GB through Outlook without any issues. How to do that? Move to the next section.

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How to Send Files over Outlook File Size Limit

You have 2 options to send large files in Outlook.

Option ane: Shrink the File Size

A simple way to ship files over Outlook file size limit is to compress the file. Afterwards compressing files inside 50GB, you lot can transport them smoothly. This method is easy to operate. However, some people claim that information technology is hard to shrink files within the Outlook attachment limits.

If then, yous can endeavor the Option 2.

Also read: Height 6 Methods to Fix Error 42125 Nix Archive Is Corrupted

Option two: Apply Secure Transport

With the Secure Send add-in of TitanFile, y'all can bypass the Outlook file size limit with ease and transport larges files in all the versions of Outlook and Office 365. The following steps show y'all how to send large files in Outlook.

Step 1: Sign upward the free trial of TitanFile by clicking here.

Step 2: Download and install Secure Send add together-in.

Step 3: Now, you tin can see two new icons on the Outlook's navigation ribbon (Attach Large File and Secure Ship).

Step four: Add a contact, subject line, and message.

Footstep 5: Click on the Attach Large File to attach files over 25MB.

Step half dozen: After the end of file uploading, click Secure send to send the files in Outlook or Function 365 to your recipient.

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How to Increment Outlook File Size Limit

Y'all can send large files after increasing the Outlook PST file size limit and Outlook OST file size limit. To increase the maximum bachelor size of the .pst and .ost files for Outlook, y'all need to add together or change registry entries below.

The MaxLargeFileSize registry entry (default value is 51,200MB (50GB) decides the maximum size of the .ost and .pst files in Outlook. Files exceeds the limit can't be created and opened.

The WarnLargeFileSize registry entry (default value is 48,640MB (47.5GB) determines the maximum data that both the .pst and .ost files can hold. You can't add whatever more data later reaching the limit. All the same, the size of the physical file may still increment due to internal processes.

Now, you can modify registry entries with the steps below.

Tip: You'd ameliorate ensure that the values between the MaxLargeFileSize registry entry and the WarnLargeFileSize registry entry be at to the lowest degree v% so that internal processes are not hindered from continuing.

Step ane: Press Windows and R keys to open the Run window, then blazon regedit and click OK.

open Registry Editor from Run window

Stride 2: Afterwards opening the Registry Editor, navigate to the destination by following the paths below.

Notation: You need to move to the entry respective to your Outlook version.

  • Outlook 2019 and 2016: HKEY_CURRENT_USER\­Software\­Microsoft\­Office\­sixteen.0\­Outlook\­\PST
  • Outlook 2013: HKEY_CURRENT_USER\­Software\­Microsoft\­Part\­xv.0\­Outlook\­\ PST
  • Outlook 2010: HKEY_CURRENT_USER\­Software\­Microsoft\­Part\­xiv.0\­Outlook\­\ PST

Step 3: Move to the right pane, and then right-click on the MaximumLargeFileSize key and click Change.

Tip: If you don't come across the MaximumLargeFileSize cardinal in the correct pane, y'all can create one. For that, right click on the empty space and click New > DWORD (32-bit) Value or QWORD (64-bit) Value according to your arrangement. Then name the key as MaximumLargeFileSize.

click Modify

Pace 4: In the pop-up window, choose Decimal and type the value data. Finally, click OK to relieve the changes.

Tip:
The value for registry entry should be configured in either bytes or megabytes. Hence, you need to summate information technology before typing. For instance:
The MaxLargeFileSize should be 100GB=102400MB
The WarnLargeFileSize should be 95GB=97280MB

type the value data and click OK

Step 5: Repeat the Step three and Footstep 4 to modify the value data of the WarnLargeFileSize key. Also, if y'all don't run into the WarnLargFileSize cardinal in the right pane, correct click on the empty space and click New > DWORD (32-bit) Value or QWORD (64-bit) Value based on your organization. Later on that, rename the key as the WarnLargeFileSize.

Further reading:

Though you can create and open .ost and .pst files later on increasing the Outlook file size limit with the above steps, the performance of your Outlook will decrease obviously. What'due south more than, information technology is not recommended to increase the Outlook file size limit over 100GB.

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How to increase the Outlook PST file size limit and Outlook OST file size limit? Steps are here. Endeavour them now!