What is NST File and How to Open NST File in Outlook?

Introduction: If you are also wondering about NST files and how to open NST files in Outlook, this blog post will help you understand the mystery around them. 

One of the vital components of digital communication is Microsoft Outlook, which provides users with an extensive platform to manage calendars, contacts, emails, and other data. It can be confusing, nevertheless, to come across unknown file extensions, particularly with files that have a “NST” extension. By describing their nature and offering a thorough tutorial on opening NST files in Outlook, our objective with this blog is to solve the enigma surrounding NST files. So, read this blog carefully to know how to open NST file in Outlook application.

What is NST File Extension?

The names “OST” and “PST” (Offline Storage Table) are certainly familiar to you if you use Microsoft Outlook. However, some users of Outlook are unaware of the NST file type. An NST file is automatically created when a user configures their Microsoft Office 365 account using Outlook. Following a successful Office 365 account configuration, Outlook starts synchronizing messages and generating a local cached copy known as a GST (Group Storage Table). After then, users of Microsoft 365 can view other data, including group emails, in an offline mode similar to that of OST files. On the local computer, GST or OST files are kept in the same folder.

Outlook NST File

The slider in Outlook regulates or adjusts the quantity of data that is synced in GST (.nst extension). Only calendars and group discussion messages are stored in Office 365 groups using NST files, also referred to as Office 365 group NST files. In certain situations, it might also keep contacts because some discussions might contain contacts.

What Is an Outlook Connector-Generated NST File?

Furthermore, an NST file generated by the Microsoft Outlook Connector for IBM Notes Add-in can be used to establish a Microsoft Outlook connection to HCL, IBM, or Lotus Notes. On a local computer, Lotus Notes email messages and other important data can be stored in NST files created by Outlook Connector. The OST file format and the NST file format are comparable.

You Might Interested In: How to Convert OST to PST?

How Was the NST Extension Made?

The steps for creating an Outlook Data File NST are as follows.

  • On your PC, launch the Microsoft Outlook Add Account Wizard. In the provided space, type your Microsoft 365 email address, then click the Connect button.
  • Outlook is getting ready to add a new account. The message that is now shown is “We’re Getting Things Ready.”
  • The Office 365 email password is now being requested; provide it and press the “Ok” button.
  • After that, a dialog window regarding the mail delivery location will appear; click OK.
  • Following that, you will receive a notification stating, “Account setup is complete.” To confirm, click “Ok.”
  • Emails have started to arrive in MS Outlook from the setup Office 365 account. The length of time this procedure takes depends on how much data you have stored in your Microsoft 365 account.
  • You can view synced data in Microsoft Outlook after downloading Office 365 emails. NST files are now successfully produced.

What is the location of the NST file?

The NST file is stored in the same directory as the OST file by default. To find the location of an Outlook NST file, you can follow the instructions provided.

Steps to Open NST File in Outlook

  • Open the MS Outlook application, select Data File Properties from the menu by right-clicking on the configured Office 365 account.
  • Next, select the Advanced option from the wizard that has just launched.
  • Next, a new pop-up window will open; select Outlook Data Settings under the Advanced tab.
  • To dismiss the current dialog box, copy the indicated location and select OK. Now, close Microsoft Outlook and hit Windows + R to launch the Run Wizard.
  • In the Run dialog box, enter the copied location path and click the OK button.
  • After that, the NST file’s default storage location will be opened.

Below path can be followed to get the NST files

Windows XP – C:\Documents and Settings\%username%\Local Settings\Application Data\Microsoft\Outlook\

For Windows Vista, 7, 8, 10, and 11 – C:\Users\%username%\AppData\Local\Microsoft\Outlook\

How to Create an NST File in Outlook?

Outlook will automatically create an NST file to store Office365 collaboration data when you set it up with an Office 365 admin account and create a group.

Click on the official Microsoft’s link to learn how to manually configure and create a group in Outlook.

How to Convert NST File to OST File and Why?

As previously mentioned, you can convert.nst files to.ost files, which have the same file formatting and folder hierarchy. Converting the NST file is done when one wants to quit the group, archive NST data, or fix a corrupt NST file.

Thus, to change it, use the procedure listed below.

  • Find the location of your NST file.
  • Right click on the NST file which needs to be changed in OST and choose Properties.
  • Select the OST extension type instead of NST under the general tab.
  • Press the “Ok” button.

This is the procedure for changing NST files to OST files. We now know that OST files cannot be opened in any version of Outlook, so we must convert them to PST files.

The Final Words

What is an NST file is explained here. And the reason why NST import and conversion to Outlook are necessary. Following the aforementioned steps will allow any user to get the knowledge on how to open NST file in Outlook. Every individual user will benefit from this comprehensive guide’s assistance in converting an Office 365 Group mailbox to an Outlook 2019, 2016, 2013, etc.

Deckon Rock

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