How to Restore .SDTID Files from Formatted SD Cards

Have files been deleted due to a user’s error or software error? Have you formatted a disk by accident and need to know how to recover the files? Read our .SDTID file recovery guide for Windows, MacOS, Android and IOS in 2025.

How to Restore .SDTID Files from Formatted SD Cards
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What is a .SDTID file?

An SDTID file is a soft token file used by RSA SecurID Software Token, an application used to authenticate a user's identity and manage their access to a network. It contains token data which includes the token profile name, device type, token code duration, token code digit length, authentication type, delivery method, and device specific attributes. SDTID files are typically encrypted with 128-bit (AES) encryption and distributed in .ZIP files.

What Are Common Causes of ".SDTID" Files Lost or Failure?

There are several common causes of ".SDTID" files being lost or failing:

  1. Accidental deletion: Users may accidentally delete the ".SDTID" file from their device or storage media, resulting in its loss.
  2. File corruption: The ".SDTID" file can become corrupted due to various reasons such as system crashes, power outages, or improper handling of the file.
  3. Malware or virus infection: If the device or storage media containing the ".SDTID" file gets infected by malware or viruses, it can lead to file corruption or loss.
  4. Hardware failure: Hardware failures like hard drive crashes or disk errors can cause ".SDTID" files to become inaccessible or lost.
  5. Software issues: Sometimes, software conflicts or errors can result in the loss or failure of ".SDTID" files. This can occur during file transfers, software updates, or when using incompatible software.
  6. User error: Users may mistakenly rename, move, or overwrite the ".SDTID" file, making it difficult to locate or causing it to fail.
  7. Unsupported file format: If the software or application used to open ".SDTID" files is outdated or incompatible, it may fail to open or read the file properly.
  8. Synchronization issues: If ".SDTID" files are stored or synced across multiple devices or cloud services, synchronization errors can occur, resulting in file loss or failure.

To prevent the loss or failure of ".SDTID" files, it is advisable to regularly backup important files, use reliable antivirus software, avoid mishandling or improper shutdowns, and keep software and systems up to date.

How to recover lost ".SDTID" files?

Sometimes while working with a computer, laptop or other stationary or mobile devices, you may encounter various bugs, freezes, hardware or software failures, even in spite of regular updates and junk cleaning. As a result, an important ".SDTID" file may be deleted.

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🧺 How to Recover Files and Folders After Sending Them to the Recycle Bin and Deleting? (Windows 11)

🧺 How to Recover Files and Folders After Sending Them to the Recycle Bin and Deleting? (Windows 11)

By no means should you think that the only way to recover a ".SDTID" file is always to create it once more.

Use programs for recovering ".SDTID" files if a file was lost after accidental or deliberate deleting, formatting the memory card or the internal storage, cleaning the storage device, after a virus attack or a system failure.

Programs to recover ".SDTID" files

Looking for a way to get files back? In cases when files were deleted and they cannot be restored by using standard operating system tools, use Hetman Partition Recovery.

Partition Recovery™ 5.0
The tool recovers data from any devices, regardless of the cause of data loss.
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Follow the directions below:

  1. Download Hetman Partition Recovery, install and start the program.

  2. The program will automatically scan the computer and display all hard disks and removable drives connected to it, as well as physical and local disks.

    File Recovery Software

  3. Double-click on the disk from which you need to recover ".SDTID" files, and select analysis type.

    Hetman Partition Recovery - Analysis Type

  4. When the scanning is over, you will be shown the files for recovery.

    Hetman Partition Recovery - Files that Can be Restored

  5. To find a file you need, use the program’s interface to open the folder it was deleted from, or go to the folder "Content-Aware Analysis" and select the required file type.

    Hetman Partition Recovery - Deep Scan

  6. Select the files you have been looking for and click "Recovery".

    File Recovery Software - Files List for Recovery

  7. Choose one of the methods for saving the files and recover them.

    Saving recovered files in Hetman Partition Recovery

How to open file with ".SDTID" extension?

Looking for how to open a stereo securID Soft Token File image file file?

Programs that open ".SDTID" files

Windows
RSA SecurID Software Token RSA SecurID Software Token
RSA SecurID Software Token Converter RSA SecurID Software Token Converter
Mac
RSA SecurID Software Token RSA SecurID Software Token
RSA SecurID Software Token Converter RSA SecurID Software Token Converter
iOS
RSA SecurID Software Token RSA SecurID Software Token
Android
RSA SecurID Software Token RSA SecurID Software Token

Additional Information

  • File type: SecurID Soft Token File

  • File extension: .SDTID

  • Developer: RSA

  • Category: Encoded Files

  • Format: N/A

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Comments (1)

  • Hetman Software: Data Recovery
    Hetman Software: Data Recovery 18.12.2019 12:58 #
    Leave a comment if you have any questions about Recovering lost .SDTID files after deleting, cleaning or formatting!
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Vladimir Artiukh

Author: Vladimir Artiukh, Technical Writer

Vladimir Artiukh is a technical writer for Hetman Software, as well as the voice and face of their English-speaking YouTube channel, Hetman Software: Data Recovery for Windows. He handles tutorials, how-tos, and detailed reviews on how the company’s tools work with all kinds of data storage devices.

Oleg Afonin

Editor: Oleg Afonin, Technical Writer

Oleg Afonin is an expert in mobile forensics, data recovery and computer systems. He often attends large data security conferences, and writes several blogs for such resources as xaker.ru, Elcomsoft and Habr. In addition to his online activities, Oleg’s articles are also published in professional magazines. Also, Oleg Afonin is the co-author of a well-known book, Mobile Forensics - Advanced Investigative Strategies.

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Questions and answers

  • What is a .SDTID file and what is its purpose?

    A .SDTID file is a file format used by RSA SecurID software tokens. It stands for Software Token Import Data, and it contains the necessary information to import a software token into the RSA SecurID application.

    The purpose of a .SDTID file is to securely distribute software tokens to users. Software tokens are used for two-factor authentication, where users need to provide something they know (password) and something they have (software token) to authenticate themselves. The .SDTID file contains the token's unique identifier, encryption key, and other necessary data for importing the token into the RSA SecurID app on a user's device.

    By distributing .SDTID files to users, organizations can easily provide them with software tokens without the need for physical devices. Users can import the tokens into their RSA SecurID app by opening the .SDTID file, allowing them to generate time-based or event-based authentication codes for secure access to systems and applications.

  • How can I open a .SDTID file and access its contents?

    To open and access the contents of a .SDTID file, you can follow these steps:

    1. Download the RSA SecurID Software Token application on your computer or mobile device. It is available for Windows, macOS, iOS, and Android.
    2. Install the RSA SecurID Software Token application and launch it.
    3. In the application, choose the option to import a token. The exact steps may vary depending on the platform you are using.
    4. Locate the .SDTID file on your computer or device. You can usually find it in your Downloads folder or wherever you saved it.
    5. Select the .SDTID file and import it into the RSA SecurID Software Token application. Again, the steps may differ slightly based on the platform.
    6. Once imported, the application will generate a unique security code or token based on the contents of the .SDTID file.
    7. You can now use this security code or token for authentication purposes, depending on the specific system or service that requires it.

    Note: .SDTID files are typically used for two-factor authentication, specifically with RSA SecurID tokens. The contents of the file include information such as the token's serial number, expiration date, and other necessary data for generating authentication codes.

  • Are there any specific software or tools required to open and view the contents of a .SDTID file?

    Yes, to open and view the contents of a .SDTID file, you need a specific software called RSA SecurID Software Token. This software is provided by RSA, a cybersecurity company, and is used to generate and manage software tokens for two-factor authentication. The .SDTID file contains the necessary information to import the software token into the RSA SecurID Software Token application.
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