Once it’s downloaded, run the file and Office will install.Ī ‘Click to Run’ Office is updated more seamlessly than updating a. MSI is one big download (around 3.5GB for Office 365) which contains both the installer program and all the Office components. That little program then downloads all the parts it needs to load Office onto your computer. Most Office 365 for Windows installations are CtR, that’s the default and it was the only option for some time.ĬtR download a small install program to run. The difference is how Office is installed and updated.Ĭlick to Run (CtR) is the newer and mostly better way to install Office. Office for Windows is the same software whether it’s Click to Run (CtR) or. What’s the difference Click to Run vs MSI? On that happy day, pink elephants will be flying our skies.

Maybe, one of these days, Microsoft will present all the relevant details of an Office install on one screen instead of spread across various places. It shows the version and build (as a combined number) and if it’s 32-bit or 64 bit. It should say ‘MSI’ since that’s the term Microsoft itself uses to describe this type of install! 32-bit vs 64-bitĬlick on the About … button to see the About window. If there’s nothing after the Build number, it’s an MSI install. After the build number it should say either ‘Click-to-Run’ or nothing. Go to File | Account (Office Account in Outlook) then look at the About … section at bottom right. Which Office install you have (Click-to-Run or MSI) should not matter but occasionally a support page or person might ask you. Office for Windows comes in two flavors called Click to Run (CtR) or MSI here’s how to tell which one you have and why it, sometimes, matters.

Office 365 msi installer