To Import ICS file to Outlook manually, open Outlook and navigate to File > Open & Export > Import/Export. Choose "Import an iCalendar (.ics) or vCalendar file (.vcs)", then select your ICS file and click Open. A prompt will ask whether you want to "Open as New" or "Import" into an existing calendar. While this process is straightforward, it has limitations. The manual method may not support bulk ICS imports efficiently, leading to data loss or duplication. Additionally, large ICS files may not open properly, and users may face compatibility issues with different Outlook versions. 

To simplify this, the Cigati ICS Converter Tool provides a hassle-free way to import ICS files into Outlook. It allows batch conversion of ICS files into Outlook-compatible formats such as PST or CSV, ensuring seamless integration without data loss. The tool preserves all calendar attributes, including event details, reminders, and attachments, while also allowing users to preview data before conversion. It eliminates manual errors and compatibility issues, making it an ideal solution for users looking to import ICS to Outlook effortlessly. With Cigati ICS Converter, the process is quick, secure, and efficient, ensuring a smooth calendar migration.