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Sometimes, Outlook fails to open when it can’t load your view settings in the app. In this case, you can reset your view settings before opening the app. Select your Microsoft Office installation on the list and choose "Change" at the top. In this case, open Outlook in safe mode where your add-ins aren’t loaded and remove any suspicious add-ins. Due to underlying system or PST issues, Outlook may crash, freeze, or not function properly.  
  
Simply https://office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html that Outlook will be loaded without your add-ins and customization files. Exit Outlook, go to AppData, and manually delete cache folders. If your Outlook keeps freezing, despite all your effort, it’s time to bring in the professionals.  
  
For example, the first time you try to Dismiss All on a list of reminders, Outlook asks you if you're sure you want to do that. If you don't choose an option on that dialog box, Outlook won't let you do anything else. Pressing Alt+Tab will help you switch from window to window and help you see what dialog boxes might be stopping Outlook from responding. When you start Windows normally, several applications and services start automatically and then run in the background. These applications and services can interfere with Outlook.  
  
A virus or antivirus software issue can wreak havoc on your system, and Outlook won’t escape unscathed. Originally, the freezing would only occur when I actually tried to do something. So, if I tried to open a message, search my inbox, write a new email, go to the calendar, etc., it would freeze up for about 5-10 seconds at a time. The freezing never seemed to occur when I had Outlook open but was not using it. To create a user profile, you must first create a user account.  
  
This can result in delays or even a full Outlook freeze on slower connections. Your profile stores a variety of settings that control how Outlook looks and feels. You can create a new profile and then add your email accounts to the new profile. If installing the latest updates didn't resolve your issue, move on to the next step.  
  
If you want to work it smoothly, we have mentioned some of the solutions above. We hope that you are relieved and would like to hear from you now. Tell us if this article helped you and you are now out of the trouble. Drop us a comment below and share what you have to say. You can follow the steps below to reset, but before starting, ensure that Outlook is not open.  
  
Simran Bhatia is a technical content writer engaged in writing clear, concise, and SEO-optimized content. This method using the SCANPST.EXE will not work if the PST Files are in bulk or they are encrypted. In that case, using a professional tool comes to your rescue. After performing the steps, check if the error persists. Remember to re-enable your antivirus once Outlook is working properly. It helps to resolve the issue and get your Outlook up and running smoothly.  
  
It is therefore crucial that these Outlook errors are resolved as soon as possible. This guide discusses methods to quickly fix the Outlook not opening issue in Windows 10. In addition to smart repair and recovery, the tool allows users to save mailbox items to various destinations like Exchange, Office 365, Gmail, etc. To repair the PST files, you can use the in-built tool ScanPST, which is provided by Microsoft, but it repairs minor corruptions and files up to 2GB only.  
  
If you are having issues sending email, this might be due to validation issues with your Microsoft Account. We have recently received some reports of users who are experiencing issues with subscribing to .ics/ical calendars. This fix will also lead to a reduction in the total number of contacts on your contact list. We will ensure that all information is retained and only contacts with matching information in all fields will be cleaned up. To check if you have received the fix, review your contact list to confirm duplicates have been removed.  
  
If you decide you don't want the calendar you created, right-click the calendar and select Remove. Under Calendars, My calendar is the default selection and displays the calendar in Month view. You can move forward or backward through calendar months using the arrows above the calendar. To show or hide the Folders list, select Show or Hide the navigation pane.  
  
This tool easily fixes the problem and is purely safe to use. If you tried the above method and found no results, here is the other fix you can attempt. This fix simply tells you to get the compatibility preferences disabled on your Outlook. Follow the steps below and see if it works wonders. Perfectly repair and recover corrupted Outlook PST & OST files. After performing the steps, check if the error persists.  
  
If you used the workaround below you can now switch from using an Outlook.com alias to your country's domain. If filling in the right info doesn’t work or if your other provider doesn’t provide POP access, contact the provider. If you have Outlook in your startup folder, remove the shortcut from the startup https://office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html folder. Ensure that your firewall or antivirus is not blocking the connection.