UPDATE: The maintenance window has closed. The network is no longer in read-only mode. Thank you for your patience.

We have planned maintenance that will impact Stack Overflow and Stack Exchange sites. The window is scheduled for Wednesday, December 13, 01:00 UTC- 02:00 UTC (Tuesday, December 12, 2023, 8:00 PM-9:00 PM EST).

During the maintenance window, Stack Overflow and Stack Exchange sites will be placed in read-only mode. Users will not be able to vote or post questions, answers, or comments. Chat will also be unavailable. Thank you for understanding.

  • 16
    Can you elaborate on this maintenance window? What kind of work is being done? Are there any benefits from this for users? Dec 5, 2023 at 19:25
  • 29
    @ThomasOwens This will be necessary database maintenance.
    – Berthold StaffMod
    Dec 5, 2023 at 20:15
  • Is it just me, or did the maintenance start 40 minutes early, and involve the site being completely down?
    – Mark
    Dec 13, 2023 at 0:53
  • 1
    @Mark I think that was just you. Maintenance finished a few minutes ago for me (though chat briefly blipped half an hour or so before that).
    – wizzwizz4
    Dec 13, 2023 at 1:50
  • 1
    For me the site keeps flipping back into read-only mode or failing to load at all. Then it'll be OK for a bit before failing again.
    – cfr
    Dec 13, 2023 at 4:13
  • 1
    @wizzwizz4, I got a "site is down" message redirecting to StackStatus, which in turn had a "we are performing scheduled maintenance" message.
    – Mark
    Dec 13, 2023 at 4:40
  • @Mark: You might be correct. I think the read-only state started a few minutes past UTC 00:00 (not UTC 01:00 as announced). Or in other words, nearly one hour early. Dec 14, 2023 at 16:59
  • We believe that brief issues before the scheduled maintenance time were due to some database prep that was happening. The maintenance and read-only state did begin at the scheduled time.
    – Berthold StaffMod
    Dec 19, 2023 at 17:38

1 Answer 1


Thanks for the update, but something pretty small that got my attention is that the Status Page bar chart showing the past events is missing the maintenance:

stack status missing mark for the maintenance window

Expected this to show in blue today. Is this on purpose, i.e. do I miss anything here?

  • 4
    Probably a bug, I'll let FireHydrant know.
    – Josh Zhang StaffMod
    Dec 13, 2023 at 13:12

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