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"Active Directory is unavailable." error occurs when calling Exchange web service API RRS feed

  • Question

  • We are using the Exchange web service API to do mail download/update with the Exchange online server in Office 365.

    Sometimes, the EWS API call encounter some errors which said "Active Directory is unavailable. Try again later".

    Generally, this kind of error happens generally, for instance, in the JP site, the error happens during the period from 8:00 AM to 9:00 AM (GMT+0) everyday.

    So, what may be the cause of this kind of error? Maybe the Exchange online server was doing some maintenance during this period?

    Thanks in advance for any reply.

    (By the way, we are using the following EWS Endpoint: https://outlook.office365.com/EWS/Exchange.asmx)

    Monday, August 29, 2016 2:32 AM

Answers

  • Hi

    The program was running in the windows Azure, and it happens in some different locations, including JP, West Europe, and US, so the connection should not be the root cause.

    Tuesday, August 30, 2016 8:54 AM

All replies

  • Hi

    Is this only happening from your current connection? can you replicate it say from 3G or any other broadband connection?


    Edward van Biljon - Exchange MVP

    Monday, August 29, 2016 6:55 AM
    Moderator
  • Hi

    The program was running in the windows Azure, and it happens in some different locations, including JP, West Europe, and US, so the connection should not be the root cause.

    Tuesday, August 30, 2016 8:54 AM