Running Parallel Office installations

My company is running an Office 365 backend.  Most of our users are still on Office 2007, but some have been migrated up to 2010.  We are now planning to do a Office 2013 rollout following our 365 tenant upgrade in a few months.  Management wants to push 2013 out in parallel to the users current office installations, thinking that they will cut back on compatibility issues with other apps.
My question is:  Next year when they come to us and ask that we push an uninstall for the older versions to leave only the 2013 on people's system, Will 2013 need to have it's dlls or anything repaired before it will function normally again?
mjkerrigAsked:
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Michael MachieConnect With a Mentor Full-time technical multi-taskerCommented:
I was recently involved in a Help request regarding running (2) Office suite installations in parallel. This is entirely possible as long as you manually install both versions and manually activate the product key.

As for the .dlls when you perform the uninstall you may get a prompt asking if you want to delete some files that may or may not be used by other programs. You can safely leave those files and if they are duplicates, or used by 2013, leaving them will be fine. If you do not get that prompt then you should be fine.

The best way to know is to install both, then uninstall the older version and see what happens.
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Michael MachieFull-time technical multi-taskerCommented:
thank you and good luck!
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