From time to time Microsoft Outlook adopts quite an annoying habit to hang around even if the user persistently attempts to shut it down. This problem existed in earlier versions and it may occur with recent Outlook 2013 and 2010. So for about the past month, my Outlook constantly freezes, the window grays out, and I get a "not responding" error message. I am not quite sure when this started, otherwise I would have rolled back updates and/or removed recently installed apps. I recently uninstalled and reinstalled Office but it only made the issue worse.
Safe Mode loads Outlook with only essential components, allowing you to isolate and disable faulty add-ins. https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ We have tried all things mentioned above (except reconnecting the MS account), but the only solution so far is deleting the users profile. As @ode2joy said, clearing out the user’s profile usually works, which is a more thorough procedure than just deleting .nst and .ost files. You can automatically repair your Office program files to resolve such problems as Outlook freezing or not responding.
If Outlook is performing some operation on hundreds or thousands of messages at once, it might appear to be stuck. Give Outlook a few minutes to finish the process and it should start to work again. To work around the issue, you will need to end all Office processes that are running and disable the presence features. On June 25th, https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ 2019, the Outlook Team made a change to the service to fix this issue.
Outdated software often causes Outlook problems. Microsoft regularly releases fixes for known issues. Power for providing "An Outstanding Customer Service Experience" for its Assisted Technical Support.
This command launches Outlook with a fresh navigation panel, often resolving profile loading hangs. Large cache is often the cause of corruption, reduce the risks by reducing the size of the cache. For more information about performing a clean boot, see How to perform a clean boot in Windows. For https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ a list of antivirus software vendors, see Consumer antivirus software providers for Windows. Outlook stores certain data, such as email signatures and the spelling checker dictionary, in the AppData folder.
The manual https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ solution will uncover the step by step guide on the Inbox Repair Tool (ScanPST.exe). In addition, it turns into leading Outlook errors, which might affect overall productivity and efficiency and can increase downtime. Therefore, users should put some effective solutions into action to deal with inaccessible or damaged PST files as soon as they encounter Outlook issues. OST files in Outlook 365 allow users to access their mailbox data even without an internet connection. But when these files become corrupted—due to system crashes, abrupt shutdowns, or synchronization failures—it can disrupt your workflow and make your mailbox contents inaccessible. This can be particularly problematic for professionals who depend on Outlook for day-to-day communication and scheduling.
It enables you to recover data from damaged OST files and convert them into accessible PST format, preserving the original folder structure and formatting. Moreover, this tool can quickly recover email messages, calendars, tasks and other data from corrupted PST files. It also offers a filter option; users can filter items using different criteria when they want to have only the desired items to process. So, learn how to fix corrupted Outlook data files (PST) without the ScanPST.exe tool. ScanPST mostly validates and corrects errors in the internal data structures of a .pst file.
This alias will be added to their account as a secondary alias, with the original 3rd party alias will continue to be set up as the primary. Once this step is complete, the user will land in their https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ Outlook inbox and be able to use all Outlook functionality with this new email address. To access the calendar shared with your Microsoft 365 for business account, you'll need to accept the invitation from Outlook on the web, iOS, or Android. If you've already clicked the Accept button in Outlook 2016, you won't be able to re-accept the invitation from another Outlook application. The person who sent you the invitation will need to remove your permissions and then send a new invitation.
A lot of times, a user will click on something by accident and change their view and be unsure of how to get it back. If anyone finds a more permanent solution, I would appreciate it. It seems like something went wrong on Microsoft update and they might recall it or fix it, so we might need to wait untill that. If you have Outlook in your startup folder, remove the shortcut from the startup folder. To learn more about how to share your feedback, see How do I give feedback on Microsoft Office.
We run a hybrid solution for our mailservers, some are still on prem and others already in the cloud. The mailbox was initialy an on-prem mailbox and then was moved to Microsoft 365. During this state, i am unable to remove it and i had to delete the old profile and create a new one to access my mails. We have recently seen a huge influx of people getting stuck on the blue outlook loading screen, with "loading profile" at the bottom.