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Some trivia about Outlook version numbers;

1. How To Find Which Outlook Version
2. How To Find Out My Outlook Version

• What are the version numbers of Outlook and their released names?
• Why does it start with version 8.0?
• Why is there no version 13.0?
• Why isn’t Office 2019 version 17.0?
• What are the build numbers of the Service Pack releases?

Finding out which version of Outlook you are running depends on if you have “Help” from the menu bar. If “Help” is available from the Menu bar: Click “Help” and then “About Microsoft Office Outlook”. Under the “About Microsoft Office Outlook” dialogue box it will display the version of Outlook. If you have an older version of Outlook. If you don't see the Office Account option in the File menu, you are running an older version of Office, and you'll find the updates control in a slightly. View a larger version. Search for the name of the person whose calendar you would like to view in Global Address List. Once you have found the person you are looking for, double-click the individual to select and click OK. Click on File then select Help. Under About Microsoft Outlook, you will see the version number and in parenthesis bit version (either 32 or 64) will be mentioned. Office 2010 is the first version of Outlook with a 64-bit version, but by default, most users will be running the 32-bit version of 2010. Find Outlook version on a Windows PC. Click the File tab, then choose either Office Account or Help. For older versions of Outlook, look for a Help menu containing 'About Microsoft Office Outlook.' Find Outlook version on a Mac. Click on the menu labeled Outlook (next to the apple logo in the top left corner of the.

Version Names and Version Numbers

The version number of Outlook relates to the first 2 numbers of the entire build number as reported in Outlook’s About dialog. side from Outlook 98, this second number is always 0.

You can look up the build number of Outlook in the following way:

• Outlook 2007 and previous
  Help-> About Microsoft Office Outlook
• Outlook 2010
  File-> Help-> About-> Additional Version and Copyright Information
• Outlook 2013, Outlook 2016, Outlook 2019 and Microsoft 365
  File-> Office Account-> About Outlook

An overview of the released versions of Outlook and their version numbers;

This version number is used for stamping the installation files of Outlook and is also used in the Registry, with the most known Registry hive being;
HKEY_CURRENT_USERSoftwareMicrosoftOffice<version>Outlook

Office 2019 is not version 17.0?

As you can see, since Outlook 2016 the version number is stuck at 16.0 and Office 2019 didn’t become version 17.0. This is because Office 2016 and Office 2019 now use the same code-base as Microsoft 365 and your license determines which features are enabled.

At the same time, this change also increases (or to be more technically correct; doesn’t decrease) compatibility with add-ins and external applications which explicitly look at the version number.

Background info

Outlook was first introduced in Office 97 which had the version number 8.0. The version numbering of Office itself skips number 5 and 6. This is because since Office 95 (version 7.0), all Office applications started sharing the same version number. Word at the time was in its 6.0 version and with that it had the highest version number. Its next version for Office 95 would become version Word 7.0 so that version number was taken for the entire Office 95 suite.

Outlook 97 replaced the applications Schedule+ and Exchange Client which were previously bundled with respectively Office and Exchange Server.

Before Outlook 97 there were already clients called Outlook bundled with Exchange. Their names are; Outlook for MS-DOS, Outlook for Windows 3.x, and Outlook for Macintosh. After “Microsoft Outlook 2001 for Macintosh” came Entourage which offered Exchange connectivity for Mac users. All these versions have their own version numbers which have nothing to to with the current versioning scheme.

Outlook 98 was initially a free download and later remained as a free upgrade for Outlook 97 users adding new features – most notably support for non-Exchange accounts. Its availability has been pulled shortly before the release of Outlook 2000. As its release was outside the normal release cycle of the Office suites (to which the version numbers have been tied), the version number of Outlook 98 could not be a full version higher than Outlook 97.

No version 13.0

At the MVP Summit in 2009, Steve Ballmer admitted (to little surprise) that there won’t be a version 13.0 for any of the Office applications because of “plain old superstition”. However, he also said that there is no “company policy for superstition” and that other product groups may release a 13.0 version of their product in the future. Obviously this superstition isn’t going to be localized for other markets where they would fear the number 14.

Other current uses of the Outlook brand

Outlook on the Web is the Web-based e-mail interface of Microsoft Exchange Server. Initially it was called Exchange Web Connect but soon replaced with Outlook Web Access. In Exchange 2010 and Exchange 2013 it is called Outlook Web App and was renamed to Outlook on the Web with Exchange 2016. As it is a part of Exchange, the Outlook Team doesn’t develop it. However, the release cycle of Exchange is synchronous to the Office Suite and shares the same version number since Office 2010.

Since Office for Mac 2011, Outlook replaced Entourage but has a completely different development team (they are even located in a different State!) and originally another development cycle. While it does share the same version number, originally, Office for the Mac is released 1 year after its Windows counterpart. This is no longer the case since Office 2019.

In August 2012, it was been announced that Outlook.com would replace Hotmail. While Outlook.com takes over some design elements of Outlook 2013 and OWA 2013, this was also managed by a completely different team. Taking Outlook.com into production is part of the “Wave 15” project which again matches the version number of the Office releases. As of mid-2017, all Outlook.com mailboxes are hosted by the Microsoft 365 platform and is very similar in look and feel to the corporate Outlook on the Web experience as part of Exchange Online. For various new end-user features and changes, Outlook.com often is used as a test-bed for the corporate version.

Build Numbers

The exact build number of Outlook that is shown in the About dialog relates to which updates have been installed. This often helps with troubleshooting and is also referred to as “patch level”.

Below you’ll find an overview of some of the major build numbers.

MS Outlook it the universally accepted email application by many users. But they don’t know the small and easy things about MS Outlook. Some of the users didn’t know how to check Outlook version 32 bit or 64 bit on a Windows operating system. But I would say that you must know these basic things. There is a major difference between MS Outlook 32 bit and MS Outlook 64 bit.

Advantage of 64 bit over 32 bit

• Smooth working with large data sets of Excel, PowerPoint, and other office files.
• Better handling of large videos and images used in PowerPoint.
• Quick and fast when working with the file over 2 GB.
• Uses more RAM to run the application smoothly.
• Works fast with the large Access Database files.

Well, 64 bit has certain advantages over 32 bit. Still, many users prefer 32 bit because it is easy to install and occupies less space on the system. If you don’t want to handle too large files then I would recommend you to use MS Outlook 32 bit. It works almost as same as 64 bit but you might face a problem when you have to deal with a file size over 2 GB.

The 32-bit Outlook application will not be able to run the file over 2 GB smoothly, therefore find out the version of your Outlook application and change it accordingly.

How to Check Outlook Version 32 bit or 64 bit on various Outlook Application

There are different versions of MS Outlook for Mac and Windows and for every version there are different steps for knowing the Bit version.

For Outlook 2013 & 2016

• Start Microsoft Program and Click on the File tab.

How To Find Which Outlook Version

• Now, Select Office Account option from the List.

• Now, on the right Click on About Outlook option.
  

• You can see the bit on the top paragraph of the box.

Finally, you would be able to know the version of MS Outlook that whether it 32 bit or 64 bit. These options are for MS Outlook 2013 and 2016.

You May Also Read- How to Sync Gmail to Outlook.

Know the Bit Version in Outlook 2010

• Launch Outlook 2010 and Go to the File tab.
• Click on Help option.
• After that Select Microsoft Office Help option.
• The bit will appear on the down right side of the screen.

It is easy to know the bit version in MS Outlook 2010. But many users find convenient using MS Outlook on Mac and most of them don’t know how to determine the version in a bit. Now, the question arises how to check Outlook version 32 bit or 64 bit on Mac.

For Mac Outlook

• Launch MS Outlook on Mac Operating System.
• In the Menu, bar click on Word.
• From the drop-down menu click on About Word.

• A screen will be displayed showing you the version.

How To Find Out My Outlook Version

• If the version is 15.24 and above then Outlook is of 64 bit.

The earlier versions less than 15.24 runs on a 32-bit program.

Note* MS Outlook 2007 only has one version that is 32 bit. There is nothing like a 64-bit program in MS Outlook 2007.

Now, I am quite sure that you will be able to determine Outlook version 64 or 32 by yourself.

Conclusion

Now I would wind up things. I have told you how to find out whether Outlook is running on a 64-bit program or a 32-bit program. You just have to follow the steps and apply them to know the bit version. Outlook 2007 on works in the 32-bit program and therefore there is no need to find out the bit in which it is running and for the rest of the Outlook versions, I have mentioned the steps and solution. I hope now you can see the bit.