12M File Extension

What is 12M file?

12M filename suffix is mostly used for Lotus Smartmaster files. Lotus Smartmaster specification was created by IBM. 12M files are supported by software applications available for devices running Windows. Files with 12M extension are categorized as Misc Files files. The Misc Files subset comprises 6033 various file formats. The software recommended for managing 12M files is Lotus 1-2-3. Software named Lotus 1-2-3 was created by IBM. In order to find more detailed information on the software and 12M files, check the developer’s official website.

Programs which support 12M file extension

The following listing features 12M-compatible programs. Files with 12M suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

How to open file with 12M extension?

Being unable to open files with 12M extension can be have various origins. What is important, all common issues related to files with 12M extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Get the Lotus 1-2-3

The main and most frequent cause precluding users form opening 12M files is that no program that can handle 12M files is installed on user’s system. The solution to this problem is very simple. Download Lotus 1-2-3 and install it on your device. Above you will find a complete listing of programs that support 12M files, classified according to system platforms for which they are available. The safest method of downloading Lotus 1-2-3 installed is by going to developer’s website (IBM) and downloading the software using provided links.

Step 2. Verify the you have the latest version of Lotus 1-2-3

If you already have Lotus 1-2-3 installed on your systems and 12M files are still not opened properly, check if you have the latest version of the software. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. If you have an older version of Lotus 1-2-3 installed, it may not support 12M format. The most recent version of Lotus 1-2-3 is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Associate Lotus Smartmaster files with Lotus 1-2-3

After installing Lotus 1-2-3 (the most recent version) make sure that it is set as the default application to open 12M files. The next step should pose no problems. The procedure is straightforward and largely system-independent

Change the default application in Windows

• Clicking the 12M with right mouse button will bring a menu from which you should select the Open with option
• Next, select the Choose another app option and then using More apps open the list of available applications
• Finally select Look for another app on this PC, point to the folder where Lotus 1-2-3 is installed, check the Always use this app to open 12M files box and conform your selection by clicking OK button

Change the default application in Mac OS

• By clicking right mouse button on the selected 12M file open the file menu and choose Information
• Open the Open with section by clicking its name
• Select the appropriate software and save your settings by clicking Change all
• Finally, a This change will be applied to all files with 12M extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Check the 12M for errors

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper 12M file. Problems with opening the file may arise due to various reasons.

1. Verify that the 12M in question is not infected with a computer virus

If the 12M is indeed infected, it is possible that the malware is blocking it from opening. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. If the 12M file is indeed infected follow the instructions below.

2. Verify that the 12M file’s structure is intact

If the 12M file was sent to you by someone else, ask this person to resend the file to you. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. If the 12M file has been downloaded from the internet only partially, try to redownload it.

3. Verify whether your account has administrative rights

There is a possibility that the file in question can only be accessed by users with sufficient system privileges. Log in using an administrative account and see If this solves the problem.

4. Make sure that the system has sufficient resources to run Lotus 1-2-3

The operating systems may note enough free resources to run the application that support 12M files. Close all running programs and try opening the 12M file.

5. Verify that your operating system and drivers are up to date

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with Lotus Smartmaster file. It is possible that one of the available system or driver updates may solve the problems with 12M files affecting older versions of given software.

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