MMCOLLECTION File Extension

What is MMCOLLECTION file?

Full format name of files that use MMCOLLECTION extension is Microsoft Outlook Mail Manager Plug-in Collection Format. Microsoft Outlook Mail Manager Plug-in Collection Format specification was created by Microsoft. Files with MMCOLLECTION extension may be used by programs distributed for Windows platform. MMCOLLECTION file belongs to the Data Files category just like 1326 other filename extensions listed in our database. Mail Manager is by far the most used program for working with MMCOLLECTION files. Mail Manager software was developed by Oasys Software, and on its official website you may find more information about MMCOLLECTION files or the Mail Manager software program.

Programs which support MMCOLLECTION file extension

Below is a table that list programs that support MMCOLLECTION files. Files with MMCOLLECTION 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 MMCOLLECTION extension?

There can be multiple causes why you have problems with opening MMCOLLECTION files on given system. Fortunately, most common problems with MMCOLLECTION files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. The list below will guide you through the process of addressing the encountered problem.

Step 1. Install Mail Manager software

Problems with opening and working with MMCOLLECTION files are most probably having to do with no proper software compatible with MMCOLLECTION files being present on your machine. The solution to this problem is very simple. Download Mail Manager and install it on your device. On the top of the page a list that contains all programs grouped based on operating systems supported can be found. If you want to download Mail Manager installer in the most secured manner, we suggest you visit Oasys Software website and download from their official repositories.

Step 2. Update Mail Manager to the latest version

If the problems with opening MMCOLLECTION files still occur even after installing Mail Manager, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Mail Manager is available. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. If you have an older version of Mail Manager installed, it may not support MMCOLLECTION format. The most recent version of Mail Manager is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Set the default application to open MMCOLLECTION files to Mail Manager

If you have the latest version of Mail Manager installed and the problem persists, select it as the default program to be used to manage MMCOLLECTION on your device. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

Change the default application in Windows

• Choose the Open with entry from the file menu accessed by right-mouse clicking on the MMCOLLECTION file
• Select Choose another app → More apps
• The last step is to select Look for another app on this PC option supply the directory path to the folder where Mail Manager is installed. Now all that is left is to confirm your choice by selecting Always use this app to open MMCOLLECTION files and clicking OK.

Change the default application in Mac OS

• By clicking right mouse button on the selected MMCOLLECTION file open the file menu and choose Information
• Find the Open with option – click the title if its hidden
• Select Mail Manager and click Change for all...
• If you followed the previous steps a message should appear: This change will be applied to all files with MMCOLLECTION extension. Next, click the Continue button to finalize the process.

Step 4. Verify that the MMCOLLECTION is not faulty

Should the problem still occur after following steps 1-3, check if the MMCOLLECTION file is valid. Being unable to access the file can be related to various issues.

1. The MMCOLLECTION may be infected with malware – make sure to scan it with an antivirus tool.

If the MMCOLLECTION is indeed infected, it is possible that the malware is blocking it from opening. Scan the MMCOLLECTION file as well as your computer for malware or viruses. If the MMCOLLECTION file is indeed infected follow the instructions below.

2. Check whether the file is corrupted or damaged

If the MMCOLLECTION file was sent to you by someone else, ask this person to resend the file to you. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. If the MMCOLLECTION file has been downloaded from the internet only partially, try to redownload it.

3. Verify whether your account has administrative rights

Sometimes in order to access files user need to have administrative privileges. Switch to an account that has required privileges and try opening the Microsoft Outlook Mail Manager Plug-in Collection Format file again.

4. Check whether your system can handle Mail Manager

If the systems has insufficient resources to open MMCOLLECTION files, try closing all currently running applications and try again.

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

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with Microsoft Outlook Mail Manager Plug-in Collection Format files. It is possible that one of the available system or driver updates may solve the problems with MMCOLLECTION files affecting older versions of given software.

Do you want to help?

If you have additional information about the MMCOLLECTION file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on MMCOLLECTION file.