Start Outlook in safe mode to fix "Processing" screenIn Windows 10, choose Start, type Outlook.exe /safe, and press Enter.In Windows 7, choose Start, and in the Search programs and files box, type Outlook /safe, and then press Enter.In Windows 8, on the Apps menu, choose Run, type Outlook /safe, and then choose OK.

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. In this window you can check the status, the number of failed requests (under Req/Fail), and which mailbox is experiencing the issue. Outlook email accounts are provided to employees, students, alumni, retirees, and for generic accounts.

Solutions to Troubleshoot 'Out of Memory or System Resources' ErrorCheck Resource Usage. ...Restart and Update Outlook. ...Optimize System Resources for Outlook. ...Find and Remove Faulty Add-ins from Outlook. ...Increase the Size of the Memory Heap. ...Rebuild the OST File.Apr 7, 2025

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally. Starting Outlook in safe mode, which starts Outlook without add-ins loaded, can tell you if an add-in is the source of the problem. For a short intro about how to access and read the Event Viewer in Windows, see this Quick Tip. If these methods dose not work, you can also try a third party tool, Kernel for Outlook PST Repair tool. If anyone finds a more permanent solution, I would appreciate it.

You can end all office-related processes in task manager to ensure a fresh start. Microsoft Outlook is an excellent application with a wide range of features. With Outlook, you can access email, calendar, contacts, and more in a single app, making it user-friendly.

A vast community of Microsoft Office365 users that are working together to support the product and others. Simran Bhatia is a technical content writer engaged in writing clear, concise, and SEO-optimized content. With a background in computer science and a passion for writing, I thrive to deliver complex technical content in simple layman terms. This method using the SCANPST.EXE will not work if the PST Files are in bulk or they are encrypted.

I’ve since installed a Windows 2016 server with Office 2024 and I don’t have any more connection problems for the moment. Since making this change, I’m not seeing the errors in Microsoft-Windows-AAD/Operational, however it may be too early too tell. Hello all,Same problem here since Outlook 2016 update on January on RDS 2022, all users are not concerned, but we have more and more users impacted. The cache file is likely corrupt or where it is stored is full.

Starting Outlook in Safe Mode will prevent some or all add-ins from being loaded, prevents several settings files from being loaded and turns off the Reading Pane. 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. When reaching this point of the guide, the issue most likely also occurs for other users on the computer. This means that the issue is not caused by a configuration setting but by an Outlook Fix Blog installation error.

If your Outlook hangs up, it might take another close/reopen. See work, group, and personal calendars with ease, wherever you want to be. Note that you can quickly tell how your mail is currently sorted, by the presence of a small triangle on the field headers. Please install the Windows 10 Fall Creators Update to fix this issue.

After updating Office, you may experience a brief flashing window every hour, which triggers the OfficeBackgroundHandlerRegistration task to start running. In this case, sign in to the Microsoft 365 portal by using your administrator credentials, and then select service health to determine whether other customers are experiencing the same issue. If other customers are experiencing the issue, the issue should end when the service-interrupting event is resolved. If you’d like to share any feedback about this article, please let us know.

To sum up, we explored several methods to fix "Outlook won’t open" errors. Whether it’s a profile issue, a corrupted PST file, or faulty add-ins, the methods above can help you get Outlook running again. When Microsoft Outlook refuses to open, it’s incredibly frustrating. This issue often stems from common culprits like a corrupted user profile, a damaged data file (PST or OST), or even a minor conflict within its settings or add-ins.

This is a lightweight app designed to handle multiple accounts and fairly moderate email use. New features like Files and attachment previews let you see your pictures and files without leaving your inbox. If you manually type in the secondary connected account email address Outlook Fix Blog in the "From" field, the email is sent as "On behalf of" your primary Outlook.com account. If you typically use an Outlook.com account for email, this issue can occur if there are multiple aliases on the account and the 3rd party email address is the primary alias. While these Microsoft accounts work in other Microsoft products (e.g. OneDrive, Windows, Xbox), they are non-functional when visiting Outlook.com.