Tips to open OTM file

Can't open the OTM file? You are not the only one. Thousands of users face similar problems every day. Below you will find tips on how to open OTM files as well as a list of programs that support OTM files.

OTM file extension

File Name Outlook Macro Format
File Developer Microsoft
File Category Executable Files

The OTM file is supported on 1 operating systems. Depending on your operating system, you may need different software to handle the OTM files. Below is a summary of the number of programs that support and open the OTM file on each system platform.

Operating systems
  • 2
  • 0
  • 0
  • 0
  • 0
  • 0

What is OTM file?

The file in the OTM format belongs to the Executable Files category. The author of this format is Microsoft. In addition to this file, the Executable Files category includes 140 related files. Outlook Macro Format is supported by 1 operating systems. Although it can be found with greater or lesser success on any operating system, it will only be useful on Windows. The Microsoft Outlook application is recommended to open the file. It was released by Microsoft Corporation. There are also 1 alternative programs to handle the OTM file. The Microsoft Word programs will also handle the file when the Microsoft Outlook program does not fulfill its role.

How to open OTM file?

An often recurring problem with Outlook Macro Format is that OTM is not associated with the correct program file. This causes the file OTM to open by system applications not designed for this purpose, or to display a message that there is no associated program. How to solve such a problem?

The first thing you should do is just "doubleclick" on the OTM file icon you want to open. If the operating system has an appropriate application to support it and there is also an association between the file and the program, the file should be opened.

Step 1. Install Microsoft Outlook

An often overlooked issue is to make sure that Microsoft Outlook is installed on the computer. This can be achieved by typing Microsoft Outlook into the operating system search engine. If we do not have this program, it is worth installing it, as it will help you automatically associate the file OTM with Microsoft Outlook. Below is a list of programs that support the file OTM.

Programs to open OTM file

Remember to download programs supporting OTM files only from verified and safe sources. We suggest using the websites of software developers.

Step 2. Create association of Microsoft Outlook with OTM files

If the application is or has been freshly installed, but the OTM file still does not use the Microsoft Outlook program, it means no association. This option is available from the level of Properties of a specific file available in the context menu. The window will show, among other things, the type of the file and the information by which the program is used to launch the file. Using the "Change" button we can select the desired program. If there is no software on the list, simply select "Browse" and manually select the directory where the application is installed. Checking the "Always use the selected program ..." box will permanently associate the OTM file with the Microsoft Outlook program.

Step 3. Update Microsoft Outlook to the latest version

If, despite the association of the Microsoft Outlook program with the Outlook Macro Format file, the file still does not open, check the program version and possibly update it to the newest version. This can be done using the application (if it provides such options) or from the Microsoft Corporation website and install the latest version.

Step 4. Check for the following problems with the OTM file

The problem may also be with the file itself if the above steps don't work. The most common file problems are:

Very often, the file may be size 0 or incomplete. Usually this applies to OTM files downloaded from the Internet in case the download did not finish properly. Downloading the file again should fix the problem.
The most common cause here is computer viruses. Perform a virus scan using available and up-to-date anti-virus software. If this is not possible, you can use the online scanner. For the best results, we will scan the entire operating system, not just our OTM file. Sometimes virus-infected OTM files cannot be recovered, so make a backup in advance.
This can happen especially when the program is dynamically developed and the structure of the OTM files changes over time. Help should be sought from the software developer, as they usually recommend using free file converters or installing an older version of the program.
There can be many reasons for this. Repairing is very dependent on the file type. Some programs offer the option of recovering data from damaged OTM files. The easiest way is to restore the file from a backup, if there is one, or contact Microsoft
The program indicates that the file is encrypted or corrupted. The encrypted OTM files can be used by the device on which they were encrypted, on any other device it is required to have the appropriate cryptographic key and decrypt the file before its recovery.
Some operating systems do not allow file operations in certain locations, eg in system directories or directly on the system drive. These directories are write-protected to them and it's very hard to fix this problem. It is best to move OTM to a different directory.
This can happen on a file that does not support multiple access. You may find that another program you are using is preventing you from working with the file. Running programs (including those in the background) should be verified. If the error persists after closing other programs, wait for a while. Some anti-virus or backup software may occupy the OTM file for a certain period of time. If the problem persists, restart the machine.