![Bit Bit](/uploads/1/2/5/4/125408500/944335330.png)
Then in April 2018 Mac users running High Sierra started seeing warnings if they tried to open a 32-bit app stating that the app ‘is not optimised for your Mac’. Install Office for Mac now Unmistakably Office, designed for Mac Get started quickly with new, modern versions of Word, Excel, PowerPoint, Outlook and OneNote—combining the familiarity of Office and the unique Mac features you love.
You should be updated to 14.7.7. This is the last updater Office 2011 will ever receive. In October it will officially be End of Life software.
![Outlook for mac 2011 32 bit Outlook for mac 2011 32 bit](http://www.howto-outlook.com/pictures/mdbvu32_openmessagestore.png)
While the apps will continue to work in Sierra, starting in High Sierra 32-bit apps will be depreciated. Office 2011is 32-bit. By default when you open Outlook it creates an Identity called Main Identity. Most likely this is the name of your Identity. Note: rebuilding Outlook has issues.
Make sure you have a backup copy first. Once you try to rebuild and it fails, it can leave you with an Identity that will never rebuild. Outlook needs a lot of free space to rebuild. When rebuilding it duplicates the Identity. Check the size by doing a Get Info on the Identity. Check the amount of free space on your drive in Disk Utility.
Not only do you need additional space the size of the Identity, the system also needs room to work. If your drive is old and fragmented, it will require even more free space. Apple Footer. This site contains user submitted content, comments and opinions and is for informational purposes only. Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Apple can therefore provide no guarantee as to the efficacy of any proposed solutions on the community forums.
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