The 2010 server seems to give 3 event messages - 39, 38 & 4Ĭurrent User: '"domain.name/User1" on behalf of "domain.name/user2"' It happens when you click Save when making any changes to the Out of Office message. I have uploaded a screenshot of the error. Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread. If an Answer is helpful, please click " Accept Answer" and upvote it. Try testing with different browers and also check it by opening the browser in private mode to see if there's any difference. When the error occurs, check the Event Viewer on the Exchange 2010 server and see if there are any relevant events recorded out there. If possible, could you remove all sensitive informaiton involved and share a screenshot or the detailed error message of "Invalid Canary" so that we can see if more clues can be found? In case currently you are not able to move all mailboxes to Exchange 2016, then please collect the following informaiton for further troubleshooting: If it works after moving to Exchange 2016, considering that Exchange 2010 has already reached the end of support, I'd recommend speeding up the migration process and proceeding to move all the remaining mailboxes to Exchange 2016 to avoid the "Invalid Canary" issue.
#Canary mail turn conversations off download
Hi going futher, in order to view the build number and check if all the security updates for your Exchange server have been applied, you can follow this link, download and run the latest version of HealthChecker script.īesides, according to your description, this is only affecting user mailboxes still resides on Exchange 2010, right? If this is the case, I'd suggest moving one of the affected mailbox to Exchange 2016 and see the result. Office-exchange-server-administration office-exchange-server-mailflow office-exchange-server-connectivity office-exchange-hybrid-itpro office-exchange-server-itpro This could end up being a major issue so I'm hoping there is a fix for this. But we can't get staff to do this as they know the mail server by external url. If I change the link in the browser for owa/ecp to the local 2010 servername we don't then get the error. I have also rebooted both servers with no success.
I have checked the case of both the owa and ecp URLs and they are all now lowercase.
The second comment on the above link is the same setup as us and no-one replied to the person's query.
#Canary mail turn conversations off install
Our 2016 is a fresh install so would have had these updates installed already. I have also found this link where someone says they have just started getting the issue after installing the recent 2021 Exchange security updates. I've seen references to this from years ago which say it's fixed in 2010 SP3, but we already have this installed. They are now getting the "Invalid Canary" message when trying to do this. Staff and IT use OWA to set out of office messages for themselves and other staff. Already posted a couple of questions regarding our Exchange 2010 -> 2016 migration and here's another.Įxchange 2010 SP3 with Rollup 32.
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