How to Keep Outlook Calendar Items in the Correct Calendar
Question details
The user wants to establish a preferred calendar to prevent moved calendar items from returning to their original accounts and losing their assigned categories.

- Product
- Microsoft Outlook
- Device & OS
- not provided
- Scenario
- Moving calendar events between multiple Outlook accounts and trying to maintain their original categories.
- Observed behavior
- Calendar items moved between different Outlook accounts automatically return to their original calendars and lose their color categories.
Verify your email account types (IMAP, POP, or Exchange) in Outlook, as IMAP accounts have strict limitations regarding calendar categories and local syncing.
Create and Set a Default PST Data File
Use a local PST file to store your calendar items securely, ensuring they stay in the preferred calendar and retain all color categories.
IMAP accounts use OST files which do not reliably support Outlook color categories. Storing calendar data in an IMAP data file is also risky because rebuilding the OST file can result in the loss of non-email folders. Creating a dedicated PST file for your calendar avoids these issues.
In Outlook, navigate to the 'Home' tab. Click on 'New Items', select 'More Items' from the dropdown, and then choose 'Outlook Data File'.
Go to 'File', select 'Account Settings', and click 'Data Files'. Highlight your newly created PST file in the list and click the 'Set as Default' button.
Open your Outlook Calendar view, select the calendar items you wish to keep, and copy or move them to the newly designated default PST calendar.

Streamline Your Work with WPS Office
If troubleshooting complex Microsoft Office settings like OST and PST data files becomes overwhelming, consider switching to WPS Office for a lightweight, user-friendly alternative to manage your daily documents, spreadsheets, and presentations.

Frequently Asked Questions
Why do my moved Outlook calendar items lose their color categories?
IMAP accounts do not reliably support Outlook color categories. When items are moved into an IMAP-based calendar, the category metadata is often stripped. Using an Exchange account or a local PST file resolves this issue and preserves categories.
What happens if I store my calendar data in an IMAP data file?
Storing calendar data in an IMAP data file (OST) is highly risky. If the OST file becomes corrupted or needs to be rebuilt by Outlook to restore email functionality, you may permanently lose any user-created non-email folders, including local calendars and contacts.
Will a default PST calendar sync automatically with my iPhone?
No. PST files are personal storage folders kept locally on your computer's hard drive. Because they do not exist on a mail server, they cannot sync over the air to mobile devices like an iPhone. You will need an Exchange account or iCloud integration for mobile syncing.




