You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally. If you can’t open Outlook, or Outlook disappears or crashes, one of your add-ins may be to blame or you may need to update Outlook. The maximum number of distribution group members is 100,000 members, and the recipient rate limit is 10,000 recipients per day. Step 1 - Follow these instructions to create a distribution group. If you’re on a corporate network, some attachments might be blocked by server policies.

After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work, troubleshoot Outlook errors but we recommend moving to Windows 11.

While Outlook’s built-in Inbox Repair tool (ScanPST.exe) can handle minor issues, it often falls short in cases of severe corruption or when dealing with orphaned OST files. In such situations, EdbMails OST to PST Converter provides a more comprehensive and reliable solution. To safeguard against data loss, maintaining regular backups of your OST files is highly recommended. EdbMails allows you to recover data from corrupted, damaged, or inaccessible OST files and supports direct import to Office 365 and live Exchange environments. It works seamlessly across all Windows and Outlook versions, preserving the original folder hierarchy and formatting throughout the recovery and migration process. To regain access to your data, repairing the corrupted OST file becomes essential.

To import contacts from other email services, export contacts, or clean up duplicate contacts, select an option from the Manage contacts menu. Add a contact to your Favorites by selecting a contact in the list, and then selecting Add to favorites. When you add someone as a favorite in People, they’ll also show up under Favorites in Mail, and the other way around, provided that the contact has an email address. There might also be a visual alert that a message is unread, has an attachment, or is flagged. This is a lightweight app designed to handle multiple accounts and fairly moderate email use. Having trouble connecting to your email from Outlook on your desktop?

Moreover, the software works with all versions of Outlook like 2021, 2019, troubleshoot Outlook errors 2016, 2013, 2010, 2007, etc. Remo Repair Outlook (PST) tool can repair all sorts of corruption issues in your PST files. Whether corruption is caused due to storing the PST file on a server or due to bad sectors on the hard disk, the reason doesn’t matter