Allow external users to edit the calendar of people that is published and shared in the internet in another organization
It would be really convenient if I could allow external users to edit the calendar of people that is published and shared in the internet in another organization. A user is the president of two organizations. One organization uses O365 but another organization doesn’t, and I would give this particular user (who is in the company that doesn’t use O365) a permission to access and edit the calendar published and shared in the internet.
This feedback is based on a customer voice from support SR.

28 comments
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Anonymous commented
Attn: Bill Gates, we need to give permission for external users to edit shared calendars
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roe commented
I have the same problem, I would be happy if the calendar could also be edited by a third party
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Casey Lawrence commented
I have external users that are also O365 users and need them to access our calendars. One of them is our Chairman and it's useless that he can't access such a simple feature. Please make this possible.
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Kevin McFarland commented
This is a requested function by some companies with associated companies which are kept separate for various reasons but would benefit from having specific users being able to directly update published calendars of one another.
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Aswindran commented
Excellent idea.
Dear Microsoft, please make this happen.
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James Ewing commented
Multi business ownership
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Eric Pardee commented
This sucks. Super Lame
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gregthewolf commented
+1 ! I would love to have the sharing calendar full permissions for external user
please !!! -
Anonymous commented
We have several individuals/businesses outside of our company that use our conference rooms. It would be more convenient if they were able to reserve these rooms directly without having to call our administrative assistance to reserve the rooms.
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Anonymous commented
We feel this feature would be beneficial, in many different scenarios in many businesses and schools. It's a must. Thank you for your considerations.
L Healy -
Julia Berg commented
Please update Outlook to allow full permission for an external user to edit shared calendars (outside of same organization).
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Baskaran S commented
+1 for this feature. It will be immensely helpful to have external users editing Shared calendars.
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Uri Goldberg commented
Thanks for the kind support, I would love to have the sharing calendar full permissions for external user
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Anonymous commented
+1 for this feature. Very helpful for delegates that support individuals with multi-organization affiliations.Seems delegation is currently limited to internal users within a given organization.
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Anonymous commented
We have multiple holdings and have multiple call centers that need access to add appointments to sales persons of our organization when a new customer/client is interested in our business products.
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Raf commented
Please add this feature to allow external users to edit a shared calendar
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Alexander commented
A must! You can make it disabled by default but giving the customers the possibility to enable it.
In Outlook.live.com this feature is already possible and allowed!Thanks!
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Anonymous commented
This function is a must. Please add this function urgently .
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Hector commented
This is a must. We can't share fully office resources (room calendars) with other companies in our shared office space.
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Kate Wood commented
Please, please add this feature