- Download MFCMAPI (64-bit).
https://github.com/stephenegriffin/mfcmapi/releases/tag/17.0.17099.01#start-of-content
Start the MfcMapi.exe program that you downloaded, and then click OK.
- On the Tools menu, click Options.
- Select the check boxes next to the following options, and then click OK:
Use the MDB_ONLINE flag when calling Open MsgStore
Use the MAPI_NO_CACHE flag when calling OpenEntry
- On the Session menu, click Logon.
- In the Profile Name list, select the profile for the mailbox, and then click OK.
- Double-click the appropriate Microsoft Exchange Message Store.
- In the navigation pane, click Root Container.
- In the navigation pane, expand Root Container, expand Top of Information Store, and then click Contacts.
- In the properties pane on the right, look for the PR_EXTENDED_FOLDER_FLAGS property, double-click it, set the binary value to 010400001000, and then click OK.