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on January 15, 2026
It will help pinpoint the troublesome add-in you can remove or replace. Sometimes, a weak or unstable internet connection can cause Outlook to misbehave. To check if this is the issue, temporarily disconnect from your Wi-Fi or unplug your LAN cable, and then try opening Outlook again. If you receive a connectivity error, your network might be to blame. You can also connect to a different Wi-Fi source to see if that resolves the problem.
The original .ost file must be converted to a pst file using Recovery Toolbox for Outlook and then opened in Outlook. Conversion from OST to PST using Recovery Toolbox for Outlook doesn't require the availability of Exchange Server or Windows Domain Controller. The full version of Recovery Toolbox for Outlook transforms it from a data loss diagnostic tool into a complete data recovery solution. It empowers you to identify recoverable data and restore it to a usable state within Outlook, giving you a much better chance of retrieving your critical information. You will be able to move on to the next recovery step (the Next button will become available), if the program finds more than one item in the source .pst file. When the search is over, select one of the files from the list in the central part of the search panel and click the OK button.
To edit a shared calendar, go online to your own Outlook.com calendar, open Calendar for Windows 10, or use a mobile device. Read how to Add your Outlook.com account to another mail app. Currently, you can't use Outlook on Windows to edit calendars that are shared with your Outlook.com account, even if you've reconnected your Outlook.com account to Outlook. We're working to make it possible to edit shared calendars in Outlook 2016 for Windows. Hello, I created a case with Microsoft and the answer appears to be unchecking the Turn on shared calendar improvements option in your Outlook. Customers with only a 3rd party email address set up as the username of their Microsoft Account will be asked to add a 1st party Microsoft alias to their account before accessing Outlook.com.
If you need to fix an Outlook file that is corrupted for any reason, then the full version of Recovery Toolbox for Outlook will allow you to do this in a few simple steps. Outlook PST file repair occurs by copying the corrected data from the damaged .pst file to a new PST file on disk. All recovered data transfers to a new PST file with preservation of the folder structure and properties of all objects. My Outlook PST files (30+GB) were still accessible but running off a hard-drive that had started to fail with bad sectors. I was unable to clone the drive or copy the PST files to a new location.
So, make sure you turn off the hardware acceleration option in Outlook. Follow the steps below to reset the navigation panel and fix the loading profile issue. I'm having an issue with one Outlook 365, the program open and get stuck at loading the user profile, any profiles. Outlook won’t work correctly and will not be able to load the profile screen if its files are corrupted. These files can be repaired through an inbuilt program in the Outlook installation directory.
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 Fix Outlook Support usually ends up costing lots of money and causing a lot of frustration. Fortunately, with the right Outlook troubleshooting strategies, many of the most common Outlook problems are quite straightforward to troubleshoot.
For more information about when builds are available for their respective channels, go to Update history for Microsoft 365. We're investigating the issue and will update this page when a fix is available. MAPI does not validate that a provider's DLL that it is requested to load is registered correctly in MapiSVC.inf or even that it comes from the local machine. This can be exploited by creating a file together with an OLE object in such a way to cause MAPI to load a DLL from a network share when the OLE object is activated. If you're using Outlook 2010, Outlook 2013 or Outlook 2016, uninstall and re-install iCloud to resolve this issue.
Incorrect system date or time can prevent Outlook from loading profiles, especially in environments where authentication relies on accurate timestamps. Even a difference of one hour can block Outlook from starting. If I run an online repair and reboot her PC it Fix Outlook Support will usually work for a day or two.
Turn off all the add-ins, close Outlook, and reopen it (not in Safe Mode). If it opens correctly, you can enable the add-ins one by one. After turning on each one, close and reopen Outlook to see if it loads correctly.
If so, wait a short time (usually two or three minutes) to see if Outlook starts working again. Shows contacts or contact lists depending on what you selected in the left pane. Select a contact or contact list to Fix Outlook Support view details in the contact card on the right. You can also select multiple contacts—for example, to send an email to the selected contacts. Keep track of appointments, meetings, or any other event from anywhere.