To the average person this would probably seem like a waste of space but I had some good reasons for doing this. It used to be you could have as many versions as you wanted installed - on my old Snow Leopard system I had 2004, 2009 (or was it 2008? can't remember) and 2011. If not, then you can give the DNS entries a try.I use Office 2011 for about 8-12 hours daily and frankly I'm afraid to upgrade because for the first time, MS is warning of issues with having more than one version of Office on your Mac. Of course, you can always try downloading the AutoUpdate 3.4 update manually first to see if that will work. This solution might not be for everyone, but it’s worth a shot if you’re having a similar problem. That’s it! You should now be back in business and be able to download and install the updates. Launch any of the Office apps, then click Help > Check for Updates, then click Install. Now enter the following addresses: 8.8.8.8 and 8.8.4.4, then click OK. Next, click the DNS tab and then the Add (+) button at the bottom. Launch System Preferences and go to Network > Advanced. The not-so-obvious solution I have found for this is to use Google’s public DNS address. Either it’s a compatibility issue with OS XYosemite’s version, or Microsoft is not aware of the problem yet. It turns out the culprit was the DNS server Microsoft uses to connect to the public Internet. I even tried to download the update manually, but Microsoft’s Support page behaved unresponsive, even in alternative web browsers. Unfortunately, checking for Updates from the Help menu was not working. To download the latest updates for Office 2016, I needed to have AutoUpdate version 3.4 installed. Resolve Office AutoUpdate for Mac, not Working

Ms office mac 2011 or 2016