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on December 15, 2025
If it is required, check if there are other Outlook settings that could optimize its performance in Outlook. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. In some cases, an Outlook messaging profile may be misconfigured.
Hello everyone, I'm trying to do online repairs on machines, silently through command line commands. The repair does kick off and run, however I'm convinced, despite the command, it is only doing a quick repair. Here are some of the reliable methods to restore Outlook 365 not working issue. Follow these methods step-by-step to overcome the issue. This software is also laced with advanced features, like filter option, scheduler option, etc.
How to Repair Outlook 2019-2016Select 'Start' menu and go to 'Control Panel'Click on 'Programs' and then select 'Programs & Features'Find and select 'Microsoft Office 2016' from the enlisted programs.Click on 'Change' option.Next, click on 'Quick Repair' or 'Online Repair' and follow instructions.Jan 13, 2025
You can save recovered PST data to DBX, MBOX, MSG, EML, TXT, RTF, HTML, and MHTML formats. It allows users to restore even large-sized PST files that are often not compatible with other tools. If you’ve tried everything and Outlook still isn’t working, it might be time to use a trusted and automated Outlook data file repair tool. It is vital for users to be aware of the reasons why Outlook profiles need to be rebuilt or repaired before jumping into the steps. So, read the points below and learn common reasons behind damaging an Outlook profile.
Once the repair is https://office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html completed, you should launch Outlook to confirm if all the issues with the account have been resolved. If Outlook is still not working correctly even after restarting it, then you could try repairing the program and restart your computer afterward. Outlook is one of the most complex applications of the Microsoft Office suite, which makes it extremely resource-hungry.
You can limit the synchronization window that’s used for calendar folders to reduce the number of items that are stored locally in your calendar folders. Use the Turn on shared calendar improvements option for users who have edit permissions to a shared calendar to improve performance. When you enable this option, calendar actions are sent directly to the server instead of having to be synchronized from local storage. I even reduced mailboxes sizes and that didn't help, I setup a new user (albeit existing PC but new windows profile), and he is having the same issues. If the mailboxes open automatically after removing them and restarting Outlook, they may be auto mapped. This setting can be changed by an Exchange admin by submitting a https://office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html request via Jira and including the usernames of the client and the usernames of the mailboxes that need to be removed.
Microsoft periodically releases Windows updates and service packs. Having the latest updates and service packs can help improve your computer’s overall performance as well as Outlook’s performance. Items moved into new folders will still be located when searching a mailbox. You can use Microsoft Support and Recovery Assistant to diagnose both Calendar and Mail issues that affect Outlook. To download and install the Assistant, see About Microsoft Support and Recovery Assistant.
The easiest way to let the indexing finish is to leave Outlook running overnight.Additionally, you can https://office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html reduce performance issues by running Outlook in Cached Exchange Mode. In this mode, Windows Search or WDS searches the local copy of the mailbox instead of the mailbox content on the server. Adjusting Outlook's Send/Receive schedule can often improve performance. If your send/receive schedule is set to check less-frequently, say, every 30 minutes, try changing it to send/receive every 3 minutes.
The above solutions are easy for all users to repair, rebuild, or recreate Outlook Profile for Office 365 or Exchange accounts. However, when it comes to repairing Outlook PST or OST files, it is necessary for users to rely on a third-party tool, like the https://office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html Shoviv Outlook PST Repair Tool. This software lets users quickly repair Outlook PST from any version, including Outlook 2003, 2007, 2010, 2013, 2016, 2019, or 2021. For a closer look at its functionalities, users can download and try its free trial version in their system. If you are dealing with a broken Outlook, then it doesn’t always mean you need to call tech support or start over from scratch. With the right steps, you can repair Outlook manually and get back to work in no time.
For more information, please see Access to Microsoft 365 email and applications by audience. For information about Microsoft 365 storage quotas, please see Microsoft 365 storage quotas and information. If you have enabled Online Archive Mailbox, archive items to the Online Archive Mailbox.
Or, you can disable any antivirus software add-ins that are installed in Outlook. Be aware that if you are connecting to an Exchange Server mailbox, your mailbox or your email messages are already being scanned by antivirus software on the server. Optionally, if you have a Microsoft Exchange online archive, you can move items to that archive or create retention policies to automatically dispose of older items. For more information, see You may experience application pauses if you have a large Outlook data file. These issues might occur if a mailbox contains https://office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html lots of folders or there are lots of items in any one folder. There's no hard limit to how many folders a mailbox can contain or how many items a folder can contain.