Michel de Rooij
@eightwone.com
Microsoft MVP | Author | Speaker
#MSExchange #EntraID #PowerShell #MSGraph
#MSExchange #EntraID #PowerShell #MSGraph
.. what does it mean? 🤔
November 17, 2025 at 9:37 AM
.. what does it mean? 🤔
Hybrid Exchange issues with Free/Busy? It's planned nudge day 3 of 3. Test-OAuthConnectivity likely shows 403 error, eg running (mix with) Exchange with pre-April patch levels. Affected? Act soon, permanent after EoM! bit.ly/ETOSecChanges #MSExchange
October 9, 2025 at 2:51 PM
Hybrid Exchange issues with Free/Busy? It's planned nudge day 3 of 3. Test-OAuthConnectivity likely shows 403 error, eg running (mix with) Exchange with pre-April patch levels. Affected? Act soon, permanent after EoM! bit.ly/ETOSecChanges #MSExchange
PSA: Connect-Office365Services 3.50 with module (un)install function, Select-Office365Modules github.com/michelderooi... #PowerShell #Office365
August 22, 2025 at 6:45 PM
PSA: Connect-Office365Services 3.50 with module (un)install function, Select-Office365Modules github.com/michelderooi... #PowerShell #Office365
Sneak peek for module (de)installation option in Connect-Office365Services. Would that delight some console people? #Office365 #PowerShell
August 11, 2025 at 5:22 PM
Sneak peek for module (de)installation option in Connect-Office365Services. Would that delight some console people? #Office365 #PowerShell
Time for the yearly movers and shakers overview: MVPs around the World 2025 eightwone.com/2025/07/30/m... #MVPBuzz
July 30, 2025 at 10:07 PM
Time for the yearly movers and shakers overview: MVPs around the World 2025 eightwone.com/2025/07/30/m... #MVPBuzz
ICYMI: Cross-tenant sync feature no longer unsupported for cross-org syncing, but with a disclaimer regarding privacy and consent. Might also be helpful in GALsync-like scenarios #EntraID
learn.microsoft.com/en-us/entra/...
learn.microsoft.com/en-us/entra/...
July 30, 2025 at 10:01 AM
ICYMI: Cross-tenant sync feature no longer unsupported for cross-org syncing, but with a disclaimer regarding privacy and consent. Might also be helpful in GALsync-like scenarios #EntraID
learn.microsoft.com/en-us/entra/...
learn.microsoft.com/en-us/entra/...
Seems unaware orgs are hitting external recipient limits. Keep track of who sends out through your tenant, especially using hybrid, or eg app messages might cause blockade of more important things #MSExchange #TERRL #MC1023294 #EX1075036
May 16, 2025 at 11:32 AM
Seems unaware orgs are hitting external recipient limits. Keep track of who sends out through your tenant, especially using hybrid, or eg app messages might cause blockade of more important things #MSExchange #TERRL #MC1023294 #EX1075036
Happy New Year / Feliz Ano Novo / Gelukkig Nieuwjaar / Frohes Neues Jahr / Bonne Année!
January 1, 2025 at 2:11 PM
Happy New Year / Feliz Ano Novo / Gelukkig Nieuwjaar / Frohes Neues Jahr / Bonne Année!
What's this? A sign of things to come for Exchange Online admins to assist with message tracing a.o.? Commence speculation .. #MSExchange
December 11, 2024 at 1:54 PM
What's this? A sign of things to come for Exchange Online admins to assist with message tracing a.o.? Commence speculation .. #MSExchange
Also, Exchange Online Management using PowerShell - which is REST-backed & backed - is affected. Try again later and it might work #MO941162 #MSExchange
November 25, 2024 at 12:07 PM
Also, Exchange Online Management using PowerShell - which is REST-backed & backed - is affected. Try again later and it might work #MO941162 #MSExchange
M365 experiencing connectivity issues. Also: The day after finalizing a T2T migration for customer with users having to switch profiles. How is your week going to far? #MO941162
November 25, 2024 at 11:23 AM
M365 experiencing connectivity issues. Also: The day after finalizing a T2T migration for customer with users having to switch profiles. How is your week going to far? #MO941162
PSA: Inbound SMTP DANE with DNSSEC is GA for Exchange Online, see techcommunity.microsoft.com/t5/exchange-... #MSExchange #Security
October 28, 2024 at 7:35 PM
PSA: Inbound SMTP DANE with DNSSEC is GA for Exchange Online, see techcommunity.microsoft.com/t5/exchange-... #MSExchange #Security
Look what showed up in Outlook Mobile (4.2438) - see MC896712 #MSOutlook
September 26, 2024 at 10:26 PM
Look what showed up in Outlook Mobile (4.2438) - see MC896712 #MSOutlook
Exchange Online Management v3.4.0 GA module is now available. Release notes at powershellgallery.com/packages/Exc.... Update your modules with helper functions present in the script at github.com/michelderooi... #MSExchange #PowerShell
October 11, 2023 at 8:46 AM
Exchange Online Management v3.4.0 GA module is now available. Release notes at powershellgallery.com/packages/Exc.... Update your modules with helper functions present in the script at github.com/michelderooi... #MSExchange #PowerShell
So, Jaap Wesselius and I did this thing again. You can get it from the publisher link.springer.com/book/10.1007... or your favorite book store #MSExchange
September 30, 2023 at 9:26 AM
So, Jaap Wesselius and I did this thing again. You can get it from the publisher link.springer.com/book/10.1007... or your favorite book store #MSExchange