A collegae asked me for my support with a strange problem using Outlook 2016 (Click 2 Run).. She randomly received errors containing running out of memory resources although there were more then enough resources available… After the default checks (update, scanpst, registry settings max cache value etc) I tried the Office 365 troubleshooting tool (C2R) and that found the solution (issue with video driver and Outlook acceleration).
In this blogpost I describe how easy it is to use this tool and why you want to make use of it! Go to https://portal.office.com/account and go to tools & addins :
Choose the first option to download (and install) the Microsoft support assistant.
You can use this tool for solving issues with Outlook, Office, Onedrive and other Office-apps (forgive the Dutch screenshots)
After installing the executable you can use the tool. Choose where the tool can help you.
I advise you to run the tool on the device you ran into the problem. The tool investigates your environment, specs, eventlogs etc. Depending on the issue the cool could ask you for your (O365) credentials. I choose for the Outlook option and my Outlook stops responding in the second menu. After 2 minutes the tool found the solution and asked me for my approval to fix the issue.
This tool could help you for the first stage of investigation!