Unable To Download Global Address Book [2021] May 2026

IIS Permissions: Verify that the OAB virtual directory in Internet Information Services (IIS) has the correct permissions and that the OAB files physically exist on the server. Conclusion

BITS Settings: Ensure the Background Intelligent Transfer Service (BITS) is running on the client machines, as Outlook uses it to download the OAB. unable to download global address book

Choose the \Offline Address Book as the address book to download. Click OK and monitor the progress bar. Step 2: Check Exchange Connectivity and Autodiscover IIS Permissions: Verify that the OAB virtual directory

Uncheck "Use Guessmart" and "Secure Guessmart Authentication." Click Test. unable to download global address book

Delete everything inside this folder (or rename the folder to .old).