The good news is that most "Outlook won’t open" errors can be resolved with a few proven troubleshooting steps. If the above how to repair Outlook quickly steps, especially ScanPST.exe, fail to resolve the "Outlook won’t open" error, your Outlook data file is likely severely corrupted or extensively damaged. In such critical situations, a specialized and reliable professional tool like the Aryson Outlook PST Repair Tool becomes the best solution. Yes, you can often fix Outlook without reinstalli...