Forum Discussion

gblackburn's avatar
gblackburn
Copper Contributor
Jan 19, 2022

Shared Mailboxes or Calendars not updating since mid Jan 2022 unless disable Shared Mailbox Caching

Hello. We're an MSP and since around 17th/18th Jan we've had one or two users in 7 different companies (tenants)  report issues with shared mailboxes or shared calendars they have access to not upda...
dptg-noah's avatar
dptg-noah
Copper Contributor
Feb 10, 2022
Our organization has been seeing this as well. Disabling and reenabling cached mode does not solve the problem. Leaving cached mode off entirely or only disabling it for shared folders only is a fix, but for users with mailboxes >10GB it has been a nightmare. We do not consider disabling cached mode to be a permanent fix in our environment. Has anyone been able to figure out a permanent fix that allows for cached mode to remain enabled?
Jurgen Van Duvel's avatar
Jurgen Van Duvel
Copper Contributor
Feb 10, 2022

dptg-noah re-create the outlook profile of the affected users. Again a workaround. I would suggest to also flag it in your O365 admin portal. The more it gets flagged, the higher it will get pushed in the O365 engineering team.

  • RJWaringa's avatar
    RJWaringa
    Copper Contributor
    Feb 16, 2022
    We have the same issue, how can we flag it in the O365 admin portal?
  • dptg-noah's avatar
    dptg-noah
    Copper Contributor
    Feb 10, 2022

    Jurgen Van Duvel When we tried to fix this using SARA, it created a new profile. This did not rectify the problem. I actually did report the problem on February 8th in our O365 admin portal, but the status was changed to "No issue found".

     

    We enable "shared mailbox" functionality via mailbox delegation permissions ("Read and manage", "Send as", "Send on behalf of"). I do not know if this is technically the same exact thing as the shared mailbox discussion here, but we are seeing the same exact problem everyone here is describing and creating a new profile, disabling/reenabling cached mode, and removing/readding the mailbox delegation permissions has not resolved the problem thus far. Only keeping cached mode disabled works.

    • Jurgen Van Duvel's avatar
      Jurgen Van Duvel
      Copper Contributor
      Feb 10, 2022

      dptg-noah look up this incident EX316072, Exchange Online,

      At the moment it's flagged ad 'investigation suspended'

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