5) If you find an .ost file in the current window, right-click the file, and then click Rename. 6) Uncheck the box next to the unessential add-ins to disable them. If this still does not work, try repairing MS Office. Then, select your account and click Open File Location. Though there could be numerous reasons why Outlook crashes or crashes on your PC, you office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html will go over a few problems in this article and show you how to fix each one. Has anyone seen this as well with this months updates.
Download the latest updates by visiting your antivirus software vendor's website. The main reason why your Outlook not responding when sending email is that your data file has been corrupted. You can use the steps to repair by using ScanPST.exe (It’s the built-in Inbox Repair Tool). To start Outlook in safe mode, click on its icon holding the Ctrl key, or enter outlook.exe /safe in the Run dialog box. You'll see a message asking you to confirm that you really want to start Outlook in Safe mode, click Yes.
However, some might be incompatible with your Outlook version and thus, cause conflicts leading to crashes. Therefore, you can try disabling unnecessary add-ins to stabilize Outlook and its workflow. For that, we first need to find out which is the office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html faulty add-in by running Outlook in Safe mode. This means Outlook will run with limited features and without any add-ins enabled. After that, Outlook will check for and install any available updates.
Repair a profile in OutlookIn Outlook, choose File.Choose Account Settings >Account Settings.On the Email tab, choose your account (profile), and then choose Repair. ...Follow the prompts in the wizard, and when you're done, restart Outlook.
The time it takes to convert OST to PST depends on your computer's performance, particularly the speed of your disk subsystem. This allows you to bypass the limitations on the RAM that can be used by each component and convert OST files of virtually any size. In other words, when you remove or modify a message, contact, reminder or meeting, the object is only marked as removed, but is not removed physically and remains in the OST file. The new version of the object is written to a office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html newly allocated space, but the old version remains in the OST file as well.
Some users may not be able to empty their Deleted Items folder. While we fix the problem, you can send the file as a OneDrive link. This is one of the classic example where office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html Microsoft rolling out updates that has not been fully tested yet and causing headache for IT professionals. The Microsoft technician was very frank that the new Shared Calendar Improvements are a mess right now. We are testing the GPO and intend to roll it out to everyone next week.
When you use a pst-file, it could be that an issue with that pst-file is preventing Outlook from starting correctly. When typing, please note the space between outlook.exe and /resetnavpane.If you encounter this issue more often, see this Quick Tip to find a more definitive solution. When typing, please note the space between outlook.exe and /safe.For alternative methods of starting Outlook in Safe Mode see this Quick Tip. As @ode2joy said, clearing out the user’s profile usually works, which is a more thorough procedure than just deleting .nst and .ost files. I have found that when this happens its due to the Account in windows needing to be updated. If you close outlook(make sure its not in the system tray) then click on start and type Domain, then find Access work or school.
In this case, you can either contact its vendor for assistance or simply choose another protection program. As your mailbox size increases, more resources are required to open each folder. If you have a large number of items in any single folder, you may experience performance issues during certain operations. For more information, see Outlook performance issues when there are too many items or folders in a cached mode .ost or .pst file. When you install Office, an Inbox Repair Tool (SCANSPST.EXE) is also installed on your PC. The Inbox Repair Tool can resolve issues by scanning your Outlook data files and repairing errors.
You performed the recovery operation at another computer or where another version of Outlook is installed. Our software uses Outlook components to compile the structure of a new PST file(s). So the recovered PST file is compatible with the version of Outlook that is installed on the system where the PST file was recovered. Recovery Toolbox for Outlook helps restore e-mails, appointments, attachments, contacts, tasks, notes, calendars, journals and other from damaged PST or OST files from Microsoft Outlook. If you use Microsoft Outlook on a Windows computer, your Outlook data files are stored in a specific location on your computer.
If you get the error "Cannot open the Outlook window" when trying to start Outlook, the error usually indicates that your Folder Pane or Navigation Pane settings holds a corruption. This guide explains all you need to know about that in order to get your Outlook to start without errors again. Microsoft says Office office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html users may experience problems launching Outlook and other apps on Windows 10 and 11 due to conflicts with antivirus software after installing the latest Patch Tuesday update. I did every solution what was written in this community, but this didn't resolve my issue.
Download the latest updates by visiting your antivirus software vendor's website. The main reason why your Outlook not responding when sending email is that your data file has been corrupted. You can use the steps to repair by using ScanPST.exe (It’s the built-in Inbox Repair Tool). To start Outlook in safe mode, click on its icon holding the Ctrl key, or enter outlook.exe /safe in the Run dialog box. You'll see a message asking you to confirm that you really want to start Outlook in Safe mode, click Yes.
However, some might be incompatible with your Outlook version and thus, cause conflicts leading to crashes. Therefore, you can try disabling unnecessary add-ins to stabilize Outlook and its workflow. For that, we first need to find out which is the office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html faulty add-in by running Outlook in Safe mode. This means Outlook will run with limited features and without any add-ins enabled. After that, Outlook will check for and install any available updates.
Repair a profile in OutlookIn Outlook, choose File.Choose Account Settings >Account Settings.On the Email tab, choose your account (profile), and then choose Repair. ...Follow the prompts in the wizard, and when you're done, restart Outlook.
The time it takes to convert OST to PST depends on your computer's performance, particularly the speed of your disk subsystem. This allows you to bypass the limitations on the RAM that can be used by each component and convert OST files of virtually any size. In other words, when you remove or modify a message, contact, reminder or meeting, the object is only marked as removed, but is not removed physically and remains in the OST file. The new version of the object is written to a office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html newly allocated space, but the old version remains in the OST file as well.
Some users may not be able to empty their Deleted Items folder. While we fix the problem, you can send the file as a OneDrive link. This is one of the classic example where office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html Microsoft rolling out updates that has not been fully tested yet and causing headache for IT professionals. The Microsoft technician was very frank that the new Shared Calendar Improvements are a mess right now. We are testing the GPO and intend to roll it out to everyone next week.
When you use a pst-file, it could be that an issue with that pst-file is preventing Outlook from starting correctly. When typing, please note the space between outlook.exe and /resetnavpane.If you encounter this issue more often, see this Quick Tip to find a more definitive solution. When typing, please note the space between outlook.exe and /safe.For alternative methods of starting Outlook in Safe Mode see this Quick Tip. As @ode2joy said, clearing out the user’s profile usually works, which is a more thorough procedure than just deleting .nst and .ost files. I have found that when this happens its due to the Account in windows needing to be updated. If you close outlook(make sure its not in the system tray) then click on start and type Domain, then find Access work or school.
In this case, you can either contact its vendor for assistance or simply choose another protection program. As your mailbox size increases, more resources are required to open each folder. If you have a large number of items in any single folder, you may experience performance issues during certain operations. For more information, see Outlook performance issues when there are too many items or folders in a cached mode .ost or .pst file. When you install Office, an Inbox Repair Tool (SCANSPST.EXE) is also installed on your PC. The Inbox Repair Tool can resolve issues by scanning your Outlook data files and repairing errors.
You performed the recovery operation at another computer or where another version of Outlook is installed. Our software uses Outlook components to compile the structure of a new PST file(s). So the recovered PST file is compatible with the version of Outlook that is installed on the system where the PST file was recovered. Recovery Toolbox for Outlook helps restore e-mails, appointments, attachments, contacts, tasks, notes, calendars, journals and other from damaged PST or OST files from Microsoft Outlook. If you use Microsoft Outlook on a Windows computer, your Outlook data files are stored in a specific location on your computer.
If you get the error "Cannot open the Outlook window" when trying to start Outlook, the error usually indicates that your Folder Pane or Navigation Pane settings holds a corruption. This guide explains all you need to know about that in order to get your Outlook to start without errors again. Microsoft says Office office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html users may experience problems launching Outlook and other apps on Windows 10 and 11 due to conflicts with antivirus software after installing the latest Patch Tuesday update. I did every solution what was written in this community, but this didn't resolve my issue.