Office 365: Microsoft Support and Recovery Assistant Tool
Microsoft has this great tool that assists with issues on Office 365. As a test, a newly installed Office 2013 installation was not patched and an attempt to set up a profile for a mailbox hosted on Office 365 occurred. The result was endless credentials boxes being presented. Upon running this tool it identified that there was indeed missing security patches as well as not being on a supported level to open my mailbox.
Another example below is that Outlook failed to start after working fine the previous day. Again the tool was run and here are the steps:
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Once you have downloaded the 1MB file and run it, the tool will check for a newer version before giving you the screen above. Click on Outlook as this is where we are having a problem.
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Once selected, choose the option best suited for your situation. In this case the above was chosen.
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You will be asked the above question. If you choose No the Next button is greyed out so you cannot proceed.
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A few checks are done, connectivity, network, etc.
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Once completed, the tool will try and recover/fix Outlook. Follow the prompts to continue.
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It detected an issue with my current profile which was there and was missing after a reboot. Hence, it asks to create a new one.
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The tool will run and create a new profile for you with the name of the email account. After this you can launch Outlook and all should be fine. If not, click No to go through more troubleshooting steps.
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In this case it fixed the issue so we clicked Yes.
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You will be asked to rate the application and provide feedback at the end.