.OTLN File Recovery

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 .OTLN file recovery guide for Windows, MacOS, Android and IOS in 2024.

OTLN File Recovery

What is a .OTLN file?

Outline created by Opal, an outlining program for Mac OS X; creates hierarchical lists for organizing notes, projects, reports, ideas, etc.; Opal is the successor to Acta and has been completely rewritten for Mac OS X.

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

There are several common causes of ".OTLN" files lost or failure:

  1. Accidental deletion: Users may accidentally delete ".OTLN" files while cleaning up their devices or organizing their files.
  2. Software or hardware issues: Issues with the operating system, software conflicts, or hardware failures can lead to ".OTLN" file corruption or loss.
  3. Virus or malware attacks: Malicious software can infect and damage ".OTLN" files, making them inaccessible or causing them to be deleted.
  4. Power outages or system crashes: Sudden power outages or system crashes while working on ".OTLN" files can result in data loss or file corruption.
  5. Improper file handling: Improper handling of ".OTLN" files, such as forceful shutdowns or improper ejections of external storage devices, can lead to file corruption or loss.
  6. Formatting or partitioning errors: Incorrect formatting or partitioning of storage devices can result in the loss of ".OTLN" files.
  7. File system errors: File system errors, such as file system corruption or bad sectors on the storage device, can cause ".OTLN" files to become inaccessible or lost.
  8. Human error: Human mistakes, such as accidentally overwriting or saving changes to the wrong ".OTLN" file, can lead to file loss or failure.
  9. Syncing or backup issues: Problems during file synchronization or backup processes can result in ".OTLN" files not being properly saved or restored, leading to loss or failure.
  10. File system limitations: Some file systems have limitations on file size or the number of files that can be stored, which can cause ".OTLN" files to be lost if these limits are exceeded.

It is always recommended to regularly back up important ".OTLN" files to prevent permanent loss in case of any unforeseen issues.

How to recover lost ".OTLN" 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 ".OTLN" file may be deleted.

Go to view
🧺 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 ".OTLN" file is always to create it once more.

Use programs for recovering ".OTLN" 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 ".OTLN" 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™ 4.9
The tool recovers data from any devices, regardless of the cause of data loss.

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 ".OTLN" 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 ".OTLN" extension?

Looking for how to open a stereo opal Outline File image file file?

Programs that open ".OTLN" files

HEX Editor HEX Editor

Additional Information

  • File type: Opal Outline File

  • File extension: .OTLN

  • Developer: A Sharp

  • Category: Data Files

  • Format: N/A


We will be happy to answer your questions!

Comments (1)

  • Hetman Software: Data Recovery
    Hetman Software: Data Recovery 18.12.2019 13:49 #
    Leave a comment if you have any questions about Recovering lost .OTLN 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.


Questions and answers

  • What is the purpose of ".OTLN Recovery" and how does it work?

    ".OTLN Recovery" is a file extension used by Microsoft Outlook to store recovered items from corrupted or damaged Outlook data files. When Outlook encounters issues with its data file, it automatically creates a new file with the ".OTLN Recovery" extension to salvage as much data as possible.

    The purpose of ".OTLN Recovery" is to provide a means of recovering important data from a damaged Outlook data file, such as emails, contacts, calendar entries, and other items. It acts as a temporary storage for recovered items until they can be merged back into the original data file or a new data file is created.

    The recovery process in Outlook involves the following steps:

    1. When Outlook detects a problem with a data file, it creates a new file with the ".OTLN Recovery" extension.
    2. Outlook scans the damaged data file and attempts to recover as much data as possible.
    3. Recovered items are stored in the ".OTLN Recovery" file.
    4. Users can access the recovered items through the "Recovered Personal Folders" section in Outlook.
    5. Users can review the recovered items and manually move them back to their original folders or other desired locations.
    6. Once the recovery process is complete, the ".OTLN Recovery" file is typically deleted, and the original data file is either repaired or replaced.

    It's important to note that the ".OTLN Recovery" file is a temporary solution and not a substitute for regular backups. It is always recommended to maintain regular backups of Outlook data to prevent data loss and minimize reliance on recovery mechanisms.

  • Can you explain the key features and benefits of using ".OTLN Recovery" for data retrieval?

    The ".OTLN Recovery" is a software tool designed for data retrieval from Outlook Notes (.otln) files. Here are its key features and benefits:

    1. File Recovery: The primary feature of ".OTLN Recovery" is to recover data from corrupted or damaged Outlook Notes files. It can handle various types of file corruption scenarios, including file system errors, sudden system shutdown, virus attacks, and more.
    2. Efficient Recovery Algorithm: The software utilizes advanced recovery algorithms to scan the corrupt .otln files and extract the maximum possible data. It can recover text, formatting, embedded images, and attachments from the notes files.
    3. User-Friendly Interface: ".OTLN Recovery" provides a user-friendly and intuitive interface, making it easy for both technical and non-technical users to operate the software. The recovery process is streamlined with clear instructions and options.
    4. Selective Recovery: This tool allows you to selectively recover specific notes or folders from the corrupt .otln files. It provides a preview of recoverable data, enabling you to choose the desired items for recovery, thus saving time and effort.
    5. Batch Recovery: If you have multiple corrupt .otln files, ".OTLN Recovery" supports batch recovery, allowing you to recover data from multiple files simultaneously. This feature is particularly useful when dealing with a large number of corrupted notes files.
    6. Save Options: Once the recovery process is complete, the software provides various save options for the recovered data. You can save the recovered notes as separate .otln files or export them to other formats like HTML, TXT, or RTF for easy access and sharing.
    7. Compatibility: ".OTLN Recovery" is compatible with all versions of Microsoft Outlook, including Outlook 2019, 2016, 2013, 2010, and earlier versions. It supports both ANSI and Unicode .otln files.
    8. Data Integrity: During the recovery process, the software ensures the integrity and originality of the recovered data. It maintains the folder hierarchy, preserves formatting, and retains the properties of the notes, ensuring that the recovered data is as close to the original as possible.

    Overall, ".OTLN Recovery" provides a reliable and efficient solution for retrieving data from corrupt Outlook Notes files. Its key features and benefits include file recovery, efficient algorithms, user-friendly interface, selective and batch recovery options, various save formats, compatibility, and data integrity.

  • Are there any limitations or specific requirements for using ".OTLN Recovery" software?

    There are no specific ".OTLN Recovery" software mentioned or widely known. It is possible that you are referring to a specific software or file format that is not commonly recognized. Without more information, it is difficult to provide specific limitations or requirements for its usage.

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