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Creating a fresh profile can provide a clean slate for Outlook to start. Yes, you can often fix Outlook without reinstalling Office. 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. If Outlook does not start then press Win+R and type Outlook.exe/safe to launch Outlook in safe mode. Disable faulty Add-ins, repair data files with ScanPST or create new Outlook files.  
  
Creating a new Outlook profile may resolve some performance issues. MDaemon Technologies is a pioneer in developing email and email security software helping to protect customers from evolving cyber-security threats. Its products and services are trusted by thousands of organizations in over 140 countries. For more than two decades, the company’s products have been developed with the ongoing input of IT professionals who demand reliable, affordable software that requires minimal effort to manage.  
  
Find solutions to common problems or get help from a support agent. The folder may have been deleted or the server where the folder is stored may be unavailable. You don't have appropriate permission to perform easy fixes for Outlook errors this operation. Right-click the folder, and then click Properties to check your permissions for the folder.  
  
If your antivirus software isn't up-to-date, Outlook may not function correctly. Start the tool and proceed to the email repair section and add files. Start Registry Editor by Pressing the Windows Key+R to open a Run dialog box. Select such processes and hit the "End Task" button one at a time.  
  
Clearing the Outlook CacheExit Outlook and Skype for Business.From the Start menu, choose Run.In the Run window, type this path in the Open box "%LOCALAPPDATA%MicrosoftOutlook"Click OK.Find the .ost file and rename or delete it (you may need to Show Hidden Files and Show Extensions to see the file)More items...•4 days ago  
  
How to resolve Outlook errors detected in an OST file?Method 1: Restart and open Outlook in Safe Mode. ...Method 2: Repair OST file using Inbox Repair Tool. ...Method 3: Delete and recreate the Outlook profile. ...Method 4: Repair OST file and convert OST to PST with EdbMails.  
  
It offers various facilities to the users, allowing them to complete the process smoothly and confidently. In addition, this software has a straightforward GUI, so every user will be able to fix PST files without hassle. Users can process many Outlook data files (.pst) in single go using this professionals’ recommended tool. It also has no restrictions on adding oversized PST files to resolve easy fixes for Outlook errors corruption. The Inbox Repair Tool is an in-built utility from Microsoft to overcome the Outlook PST file corruption issues.  
  
Do not forget to add the Outlook application and its add-ins to the trusted list of your Antivirus program. If still, you are facing the same issue, maybe you should try to turn off the Antivirus program and check if Outlook is working fine. If it is, this means your Antivirus program is causing this problem. To resolve this issue, make sure the Antivirus program you are using is updated. If you are using an outdated or over-protective Antivirus software, it may conflict with Microsoft Outlook or any of the Outlook add-ins you have installed. Consequently, the Antivirus program will block the add-ins and stop Outlook from functioning properly.  
  
This utility is not the professionals’ recommendation, as it comes with a lot of drawbacks. Before implementing this method to fix Outlook PST files, read its limitations for more insight. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. I ran a full online repair on Office 365 PC where it uninstalls office, downloads the latest version and reinstalls, Windows is fully updated. If your PST file is stored on a network drive, ensure that the drive is accessible and that you have the necessary permissions.  
  
Besides that, its free edition can process up to 50 items from each folder, making it easy for users to understand tool’s working. In earlier versions of Outlook, easy fixes for Outlook errors we previously recommended that you use the Scanost.exe tool for errors that occur with your offline Outlook Data File (.ost). The Scanost.exe tool is no longer available starting in Outlook 2010. We now recommend that you delete your offline Outlook Data File (.ost) and that you let Outlook redownload the information from the server that is running Exchange Server. Once your task is done of locating the ScanPST.exe tool, kindly head to follow the below-given steps to fix Outlook data files (PST).  
  
A simple reset often resolves this and allows Outlook to open correctly. Here are some common fixes that should work when Outlook doesn't open, whether you're using Windows or a Mac. 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.