Microsoft Exchange Online
A Microsoft email and calendaring hosted service.
1,912 questions
No, it does not change, you can treat it as immutable.
Does the GUID of a particular mailbox change automatically in Exchange Online? If so in what cases does it change?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(272, 89%, 36%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EB2%3C/text%3E%3C/svg%3E)
Brian 23
0
Reputation points
The guid I mean here is the guid we get once we run Get-Mailbox, after a few years I would like to know whether the same guid will be retained or would it change after a period of time for a particular mailbox or a user? May I know what are the cases in which the guid could change?
{count} votes
-
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(9.6, 31%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJX%3C/text%3E%3C/svg%3E)
Jame Xu-MSFT 4,176 Reputation points2023-02-22T02:34:07.1566667+00:00 Hi @Brian 23 ,
Just checking in to see if above information was helpful. Please let us know if you would like further assistance.
If the question has been answered, please accept the helpful replies as answers, this will make answer searching in the forum easier and be beneficial to other community members as well.
Sign in to comment