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December 18, 2025
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You can try sending it again, and this simple step can fix any minor issues that might be stopping your email from going through. Microsoft regularly releases updates that include bug fixes and performance improvements. Ensuring the correct outgoing server settings, port numbers, and encryption protocols prevents miscommunication with your mail server. Repairing the profile restores default settings and fixes underlying issues without affecting your data. It breaks up large PST files using filters like date, size, subject, etc. Identifying and addressing the specific cause of the error is crucial to resolving the issue and restoring normal email-sending functionality in Outlook.
Rohan Wiese works as Technical Content Writer at Cigati Solutions.Use the following steps to re-enable the Send immediately when connected option.Being a Chief Technical Analyst, I am aware of the technicalities faced by the user while working with multiple technologies.Sometimes, for security reasons, Outlook may block your account and ask you to change your password.This clears any misconfigured settings and allows Outlook to reset your account connection.– Download the latest version of Outlook from the Office website or use your installation media to reinstall the software.In this guide, we’ll walk you through five effective ways to troubleshoot and resolve this issue so you can get back to your productive self.These delays can arise due to incorrect account settings, a cluttered inbox or mailbox, issues with internet connection, or malfunctioning or outdated add-ins.
Solution 7: Repair Your Outlook Profile
If none of the above methods work, removing and re-adding your email account can help resolve persistent issues. Temporarily disabling antivirus and firewall tools helps determine whether they’re interfering with Outlook’s communication. Sometimes, for security reasons, Outlook may block your account and ask you to change your password. The following section will discuss the best ways to resolve the error Can’t Send Email from Outlook. You just need to have an overview of the entire blog to get your answer soon.
Tip 7: Separate Large Outlook Data File
He writes technical blogs, articles, newsgroups, etc. on Database Recovery, Email Backup & Migration for Cloud and Webmail Email Clients. He has almost two years of writing experience and has written about many Technologies such as Cloud Computing, Intelligence, IoT, and Email Management. Hiver offers the best experience on your desktop Mailbox Not Updating On IMAP or laptop browser. Switch devices and download our extension from the Chrome Web Store to start using Hiver. – Download the latest version of Outlook from the Office website or use your installation media to reinstall the software. This setting is tied to the following registry data, so this setting can also be configured by an administrator through a modification of the registry.
#9. Use the Inbox Repair Tool
Updating or reinstalling Outlook can fix many issues, ensuring that you have the latest bug fixes and performance improvements. Use the following steps to re-enable the Send immediately when connected option. Identifying a failed connection helps confirm if the issue is external. Outlook Add-ins are designed to enhance functionality, but some can conflict with email operations, particularly when sending or syncing messages. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. I am having trouble with Outlook, on two machines, both brand new installs.
Tip 5: Compact the Data File to Fix a Delay in Receiving Emails Outlook
Refer to your email service provider’s official documentation for the correct SMTP settings if you’re unsure. If the server is down, you’ll flush DNS and re-sync Outlook need to wait until Microsoft or your email provider resolves the issue. If you’re using Microsoft 365, you can also check real-time server status on the Microsoft Service Status page.
It can take a matter of minutes to do a simple search, the same to send an email. It's a brand new install on two brand new machines with the same problem. I used to use EM Client with no issues, but tried to use Outlook as it is included with 365, but it is truly terrible so far. There are some third-party add-ins which can cause Outlook freezes when sending email. This clears any misconfigured settings and allows Outlook to reset your account connection.
Troubleshooting Outlook Email Sending Issues
Running an outdated version of Outlook can lead to bugs, compatibility issues, and sending failures. If Outlook itself seems to be at fault, solutions like updating the app, repairing your profile, or recreating the email account can provide a fix. You can choose any manual method or an automated solution to fix it. In this guide, we’ll walk you through five effective ways to troubleshoot and resolve this issue so you can get back to your productive self. When this problem occurs, the message remains in your Outbox folder until you manually initiate a Send/Receive operation (for example, press F9 or select send or receive).
Solution 8: Recreate Your Email Account
Ensuring your internet connection is stable and reliable is the first step in troubleshooting Outlook’s email-sending issues. If the connection is stable and you’re still having problems, you might want to check out the other fixes mentioned here. These FixTechGuide email error solutions delays can arise due to incorrect account settings, a cluttered inbox or mailbox, issues with internet connection, or malfunctioning or outdated add-ins. Repairing your Outlook profile can fix various issues related to email sending and ensure your account settings are correctly configured. If the above attempt to check an email doesn’t work, don’t worry!
Being a Chief Technical Analyst, I am aware of the technicalities faced by the user while working with multiple technologies. So, through my blogs and articles, I love to help all the users who face various challenges while dealing with technology. By looking for these errors, you can quickly fix them or identify if they do not work. Then, here are the best solutions which can surely help you solve your problem. Rohan Wiese works as Technical Content Writer at Cigati Solutions.
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November 10, 2025
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I regret that you are experiencing issues with your Microsoft Outlook slow synchronizing inbox message, and need help speeding up. In the sections that follow, we’ll walk you through a clear, step-by-step guide to identify the root cause of the sync error and Outlook Not Sending or Receiving Email apply practical solutions to get Outlook working normally again. Once you have completed the steps to fix Outlook sync errors, kindly check if the error has been fixed or not.
Speed Up Slow Outlook Inbox Synchronization
Knowing the reasons behind the Outlook sync issues will clear Outlook credentials manager help us to fix this problem and prevent issues in communication and workflow. Select the button below to launch a diagnostic in the Microsoft 365 admin center. The diagnostic will guide you to resolve various error conditions that can cause mailboxes to not be created.
Enable "Download shared Folders" and "Public folders favorites"
If you haven't installed alternative security software, you should temporarily turn off Windows Defender Security Center. Before you begin, make sure that your device has the latest operating system and app updates. Try the general troubleshooting solutions in Troubleshooting Mail and Calendar apps for Windows 10. We're sorry you're having problems with the Mail and Calendar apps for Windows 10. To fix the issue, please try each of the following solutions in order.
Check the connectivity to your email server
Third-party firewalls or antivirus software might prevent you from syncing your email and calendar events. Check the software documentation to learn how to temporarily turn Outlook stuck updating folders solution it off. If the syncing problem still persists with the new Outlook profile, then the problem might be elsewhere.
Professional automation to resolve Microsoft Outlook syncing issues
If there's a feature you think is missing from the Mail and Calendar apps, or if a feature in isn't working properly, you can provide feedback directly to the Mail and Calendar team. If your password isn't the problem, you might have a certificate error. If so, you'll see a message that says, "There is a problem with the server's security certificate. The security certificate is not from a trusted certifying authority." If you can sync your email when the firewall is turned off, you'll need to allow the Mail and Calendar apps through the firewall. Windows Defender Security Center is free security software that's included with Windows 10.
Essentially, a shared mailbox acts as a centralized service allowing many people to work in a synchronized manner.In this article, you will learn how to configure a shared mailbox in Outlook and what to do if the shared mailbox is not synchronizing properly.If you still can't sync your email after removing your account and adding it again, you might need to add the account using advanced setup.Office 365 keeps your mailboxes (shared or individual) on a server called Microsoft Exchange.They permit performing a wide range of coordinated activities with a team.Select Editor permissions (which will provide full access) and click OK.Before we know the solutions, we will understand a few common causes of the Outlook sync problem.
Incorrect Outlook settings can also be one of the reasons behind Outlook synchronization errors. Outlook sync issues can be because of corrupted Outlook OST or PST files. Therefore, now we will know the steps to repair the Outlook data file. Open Outlook again and reconnect the shared mailbox following the process listed for step number 1 (How to add an additional shared mailbox on Outlook). Shared mailboxes might suffer from a wide range of technical and configuration issues.
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