Add Outlook won't open on my Windows 10 PC have Microsoft 365 and do the Repair and restart but it doesn't work except occasionally if I "Run as administrator" it will open but then will stop working Microsoft Q&A

Outlook-won%27t-open-on-my-Windows-10-PC-have-Microsoft-365-and-do-the-Repair-and-restart-but-it-doesn%27t-work-except-occasionally-if-I-%22Run-as-administrator%22-it-will-open-but-then-will-stop-working-Microsoft-Q%26A.md

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+Optionally, you can try to recover additional repaired items from the backup personal folder. You can use the Inbox Repair Tool (scanpst.exe) to repair corrupted Personal Folders (.pst) and Outlook Data (.ost) files. This is useful when your OST file is relatively big (more than 5 GB) and it would take a long time to recreate it. Also, it can be useful when you are getting errors when importing data from a PST file.
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+Follow the on-screen instructions to update your Office apps. Then, launch your Outlook app, and it should open without problems. If your PC has a virus or malware infection, that may be why Outlook isn’t launching. In this case, run a full virus check on your PC to find and remove any threats.
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+If that doesn’t work, try using the Inbox Repair Tool or creating a new profile. And if nothing else helps, there are great tools out there that can recover everything for you. Take it one step at a time, and you’ll have Outlook working again soon. Our goal is to give you the answers to fix the most common issues Outlook users face. Bookmark this page so that whenever you come across an error like your Outlook calendar not syncing, or a corrupted file, you'll have a place to start troubleshooting.
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+To resolve this Outlook issue, you can follow our comprehensive guide on How to Fix Outlook Search When Not Working. In case your Outlook PST is corrupt or damaged, you can always look for third-party Outlook PST Repair Tool to fix the issue. Inbox Repair Tool or ScanPST.exe Fix Outlook Stuck On Loading Profile is a free utility provided by Microsoft. However, for severely corrupted PST files, it’s recommended to use a third-party repair tool.
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+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
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+Fortunately, with the right Outlook troubleshooting strategies, many of the most common Outlook problems are quite straightforward to troubleshoot. Below, you will see some of the most common issues that users run into, and what the most efficient way to troubleshoot Outlook is. You can create a new Outlook Data File and drag the items in the Lost and Found folder into the new data file. After you've moved all the items, you can remove the Recovered Personal Folders (.pst) file, including the Lost and Found folder. To create a new Outlook Data File, go to Create an Outlook Data File. In the Folder Pane, you might see a folder named Recovered Personal Folders that contains your default Outlook folders or a Lost and Found folder.
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+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. You should start with the easy fixes, like repairing Office or turning off add-ins.
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+When this registry key is set, Outlook will use its own built-in search engine. The built-in search will display the message below to indicate it is not using the Windows Search service. The issues documented in this section have been reported after installing the recent updates listed below. We're investigating the issues and will update this page when a fix is available. In the meantime, please use the workarounds suggested for each Fix Outlook Stuck On Loading Profile issue.
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+If a Microsoft 365 application such as Word or Excel isn't working correctly, sometimes Fix Outlook Stuck On Loading Profile restarting it will fix the problem. When you're done, you might need to restart your computer. You might need to set Windows Update to automatically download and install recommended updates.
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+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. Message 2 - The file you're attaching is bigger than the server allows. Step 1 - Follow these instructions to create a distribution group. Step 1 - The hard limit of recipients for a single email message is 300.
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+Running the /resetnavpane command removes all customizations to the navigation pane. It's not uncommon, and you can easily make Microsoft's email and calendar app open with a few simple fixes. We’ll show you what to do on your Windows 11 or Windows 10 PC.
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+This article will cover how to fix Outlook issues that plague the everyday user in 2023. The steps [Fix Outlook Stuck On Loading Profile](https://office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html) to access the repair tool vary depending on your operating system. If you can open the original Outlook Data File, you might be able to recover additional items.
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+You cannot create a new email address with @live.com as the domain address. You cannot create a new email with @msn.com as the domain address. If you have not logged in to your email address in over two years, it will be considered inactive and may have been removed. The first rule of Outlook troubleshooting is to eliminate the most obvious suspects. A popular one to cross off is your own internet connection. We go above and beyond the average software reseller because we built our business on trust.