Add 'Troubleshoot Outlook for Windows issues'

Troubleshoot-Outlook-for-Windows-issues.md

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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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+There are different steps to take if you are on Windows (you'll need to locate the Search Index) or Mac (use Spotlight). First, let's read about how to check if Outlook is indexing on Windows. A laggy search is one of the most common Microsoft Outlook problems. It may arise at different times, depending on your platform or device. Sometimes, it may be your Outlook app itself that is damaged. Not to worry, you can use the built-in Microsoft Office repair utility to get it back in order.
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+Trouble shooter came back as there was a problem running the trouble shooter, try looking for other solutions. When Outlook does open, it will send mail fine one minute and then the next minute it will not send any mail. I agree, it is highly unlikely that all the users would suddenly have an issue that isn’t patch related. Outlook opening problems are simple to deal with.
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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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+You can run the Inbox Repair Tool (scanpst.exe) to scan your Outlook data files and repair errors. Are you having trouble starting Outlook or receiving "Cannot start Microsoft Outlook. Cannot open the Outlook window" error messages? We can fix the problem for you, or you can use the troubleshooting steps we're providing below to help resolve these startup issues. If your Outlook is working fine now, it means add-ins are the culprit. But it is important to identify the specific add-in that was causing trouble. To identify that, check the add-ins one at a time and restart Outlook.
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+If you can't choose any of the menu options, type inside an email message, calendar event, or contact, Outlook may have frozen. There are three steps you can take to try to get Outlook working again. If you are having problems with Outlook, there are a few things we can help with to get you back to sending and receiving your email. A vast community of Microsoft Office365 users that are working together to support the product and others. If you are having issues sending email, this might be due to validation issues with your Microsoft Account. Some customers may not be able to see their Profile, Account or Sign Out options when selecting their picture on the top toolbar.
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+The Family group calendar now appears in the Outlook.com groups area in the left nav on Outlook web and in the groups area of the Outlook mobile Outlook repair support team app. We're aware of an issue where some users see the error message "Your message can't be displayed right now". Microsoft has released a Windows Hotfix file to remove the contacts folder synced by the Teams app. This fix will also lead to a reduction in the total number of contacts on your contact list.
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+Moreover, you can make Outlook work much better and faster. Don’t forget to regularly take care of your Outlook and update it to keep it working its best. If you still have problems even after trying these solutions, it might be a good idea to ask for help from Microsoft Support or an IT expert.
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+If you've already clicked the Accept button in Outlook 2016, you won't be able to re-accept the invitation from another Outlook application. The person who sent you the invitation will need to remove your permissions and then send a new invitation. If you manually type in the secondary connected account email address in the "From" field, the email is sent as "On behalf of" your primary Outlook.com account. Availability has recovered, and engineers are investigating the root cause and identifying problematic servers. The team is sweeping all remaining capacity to identify and address residual issues.
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+To access the calendar shared with your Microsoft 365 for business account, you'll need to accept the invitation from Outlook on the web, iOS, or [Outlook repair support team](https://office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html) Android. If you've already clicked the Accept button in Outlook 2016, you won't be able to re-accept the invitation from another Outlook application. The person who sent you the invitation will need to remove your permissions and then send a new invitation. This issue has been mitigated and we are continuing to monitor the issue to ensure stability. The root cause was the deployment of an incorrect campaign data file, which led to false positive campaign detection. We have since reverted to the right data file and the outbound email flow has returned to a normal state.