
Lastly and since the shared inbox removal, user states a 'MS Blue Banner continues to prompt for sign-in once already signed in'. Get Help has troubleshooters for classic Outlook for Windows you can run for many common scenarios, such as Outlook startup or profile setup problems. These often help resolve issues without the need to contact support. There may be a few more things I've tried and I'll add them to this when I'm back at work to check my documentation. The user states this issue began after I removed them from the shared inbox.
Troubleshooting MS Outlook

Microsoft has its own tool for automatically scanning and correcting Office when things go awry. You can read about it and then run the Microsoft Support and Recovery Assistant to see if that helps. It can automatically diagnose issues, troubleshoot, and fix problems with Outlook. A more general version that can also fix Office, Microsoft 365, and other Outlook problems can be found here. In many organizations, Outlook is one of the most common and core programs that are used from day to day. Many businesses depend on it to keep their operations running, and having it break is a nightmare that usually ends up costing lots of money and causing a lot of frustration.

V. Uninstall and Reinstall Office
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- TrustedTech is dedicated to being a reliable resource for all software and technology support needs.
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- However, this is my first time working in an office position and also with an enterprise network.
Auto-archive, sending and receiving a very large attachment, or running some of the other mailbox tools can all be done in the background. Check the status bar at the bottom of the screen to see if another process is running. If so, wait a short time (usually two or three minutes) to see if Outlook starts working again. If Outlook shows Disconnected at the bottom of the status bar, this issue may occur due to improper Autodiscover resolution.
Does classic Outlook stop running or refuse to start?
Are there currently issues with Outlook?
Use the classic Outlook startup troubleshooter to resolve issues when classic Outlook for Windows is unable to start. Use the classic Outlook authentication check troubleshooter to resolve classic Outlook password authentication issues. Visit the Technology Help Desk Support page to locate your local campus contact information or to submit an online technology support request. The FixTechGuide Office 365 support maximum number of recipients for an individual email through USNH IT mail servers is 300.
View Settings
Run Test E-mail AutoConfiguration to confirm Autodiscover is resolving to Intermedia servers which helps Outlook to connect properly. TrustedTech delivers unbeatable customer service, with experts in licensing and high-level technicians always on-call to answer your tech issues in-depth. You might need to set Windows Update to automatically download and install recommended updates.
Installing any important, recommended, and optional updates can often correct problems by replacing out-of-date files and fixing vulnerabilities. To install the latest Windows and Office updates, click the link below. Use the classic Outlook calendar check troubleshooter to identify classic Outlook calendar issues. Use the classic Outlook connectivity troubleshooter to resolve intermittent connectivity issues.
To conclude this and cut to the chase, I am nervous and I have a ticket I have been troubleshooting since this past week but haven't found a fix yet. I have an end user who had asked me to remove them and one other co worker from a shared Outlook inbox with someone who retired. Well, I did as they asked and removed both end users from the retiree's shared inbox via O365 Admin. Well, ever since then one of them has been having issues with MS Outlook. Outlook will operate for roughly 20 minutes and then freeze and become unresponsive. In the meantime, I have instructed them to utilize Outlook in their browser.