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7 votes

How to reconcile user with both on-premise and cloud mailboxes?

I've the same problem in my domain. Someone manually create the o365 mailbox for users who already have an on-premise mailbox I've found this way to fix it: Export office 365 mailbox in PST Remove ...
Mauro's user avatar
  • 71
6 votes
Accepted

How to reconcile user with both on-premise and cloud mailboxes?

I decided I didn't want to export all the mail from the cloud mailbox using Outlook, remove the Office 365 license (or just the EOL license) from the user, then use Powershell to permanently delete ...
Todd Wilcox's user avatar
  • 2,871
4 votes

Migration of Exchange 2010 to AWS server

Please keep noted that running an Exchange Server on a domain controller (it hosts your Active Directory) isn´t really supported. Additional Exchange 2010 is very old and will be end of life in 2020. ...
BastianW's user avatar
  • 2,888
3 votes
Accepted

Exchange Online Migration: Single Tenant with Multiple Exchange Endpoints

This is possible in general, although quite tricky to get right; here's the only offical documentation I was able to find: https://docs.microsoft.com/en-us/previous-versions/exchange-server/exchange-...
Massimo's user avatar
  • 71.4k
3 votes

Migrate from Exchange 2010 to Exchange 2016

I would start ramping up an additional server (must be joined to your current domain BEFORE you install MS Exchange 2016 on it; keep noted that there is no option to perform an in-place upgrade of MS ...
BastianW's user avatar
  • 2,888
3 votes
Accepted

Office365 Cutover Migration fails

I tried changing the authentication type from Basic to NTLM but that did not make it work. I tried using Exchange Remote instead of Outlook Anywhere and that worked, but you cannot use Exchange ...
user5870571's user avatar
  • 3,164
2 votes
Accepted

Migration from third-party hosted Exchange to Office 365 - How to avoid NDRs caused by X500 addresses?

The X.500 solution is used when all mailboxes are on to the new platform (whether Office365 or a self hosted). It allows end users to send email to the old addresses and they are delivered. The key ...
Sembee's user avatar
  • 2,884
2 votes

Partial migration from Exchange to Office 365

Maybe tell us exactly what you'd like to do. When you say these users would like to "work from anywhere" what do you mean exactly? Why can't they use their email from anywhere now? You don't need to ...
joeqwerty's user avatar
  • 111k
2 votes
Accepted

Exchange 2007 migrate to new virtual server

Exchange 2007 cannot run on Windows 2016. The latest it will run on is Windows 2008 (NOT R2). Your reason for not upgrading to SP3 isn't really good enough - patching is not an optional task, and ...
Sembee's user avatar
  • 2,884
2 votes

Upgrade Windows Server when Exchange Installed

I would start ramping up an additional server (must be joined to your current domain BEFORE you install MS Exchange 2016 on it; keep noted that there is no option to perform an in-place upgrade of MS ...
BastianW's user avatar
  • 2,888
1 vote

Error install exchange 2016 coexistence with exchange 2010

I struggled with a similar error when installing Exchange 2019 in an Exchange 2013 environment. It ended up beeing due to RecipientFilterApplied was set to $false. It was solved by a simple update of ...
praecox's user avatar
  • 79
1 vote

Error install exchange 2016 coexistence with exchange 2010

I noticed that you may have posted the same question in the two communities, it seems that someone has answered it for you in Microsoft Q&A, you could refer to the Microsoft Q&A. https://learn....
Ivan Lv's user avatar
  • 57
1 vote

BitTitan (405) Method Not Allowed

First, I undid all of the things I did about verbs. Seems one of two things may have been the problem. One, BitTitan just wasn't working that day. Two, I rolled back the public DNS autodiscover A ...
Adam Winter's user avatar
1 vote
Accepted

Exchange Server 2010 to 2016 migration

Whenever I add the dummy account to my outlook, everything works as it should - but as soon as I close outlook and open it again, Outlook cannot access the information store anymore. When I check the ...
Ivan_Wang's user avatar
  • 1,339
1 vote
Accepted

Microsoft Exchange: difference between a "mailbox" and a "mail user"?

Mail users are similar to mail contacts. Both have external email addresses and both contain information about people outside your Exchange Online organization that can be displayed in the shared ...
Joy Zhang's user avatar
  • 1,072
1 vote

Migrate Exchange 2010 to Exchange 2016, but do it gradually

Agree with Mikael H, If you only install exchange 2016, it will not affect the existing exchange 2010. You say go back to exchange 2010, yes, you can, If all mailboxes are on exchange 2010 and there ...
Joy Zhang's user avatar
  • 1,072
1 vote
Accepted

Migrate Exchange 2010 to Exchange 2016, but do it gradually

If you set up a separate Exchange 2016 environment next to your existing Exchange 2010 one, at first nothing at all should happen. The reference in point 6 you mention seems to be a precaution to ...
Mikael H's user avatar
  • 5,129
1 vote

Connecting to on-prem calendar from 365 account

Which method do you use to migrate mailboxes? Since you didn’t deploy hybrid , the migrated mailboxes and on-premises mailboxes are still from two organization. So they cannot share calendar directly. ...
Jayce's user avatar
  • 824
1 vote

Partial migration from Exchange to Office 365

You can setup your external mail flow to enter your org through Exchange onprem and get routed to the Office 365 tenant only for those mailboxes you want to bring onto the cloud. You then have to ...
Mike L'Angelo's user avatar
1 vote

Partial migration from Exchange to Office 365

For your request, hybrid deployment is the option. As Timothy said. Hybrid is big and complex job. Since there are few users, you could consider moving all to Office 365. Exchange Deployment ...
Jayce's user avatar
  • 824
1 vote

Exchange 2013. I cannot send email. error: You don't have permission to perform this action

I finally solved the problem. It turns out it really was DNS issue. The hostname my exchange 2013 uses points to a different IP than was intentionally set. After I correct that, I changed back the ...
Aizul W's user avatar
  • 11
1 vote
Accepted

Exchange 2010 to 2013 duplicated user after migration

As discussed in the comments, try to use the New-MoveRequest as explained for example here.
BastianW's user avatar
  • 2,888
1 vote
Accepted

Hosted Exchange to Office 365 migration: should we move to O365 at our hoster before moving?

I'd be curious to read about the reasons behind some of the suggestions that you have heard. Option 2 is the most straight forward. Option 1 and 3 are both completely un-necessary. This process is ...
Appleoddity's user avatar
  • 3,872
1 vote
Accepted

Cutover migration from exchange 2007 to exchange online error

It was an issue with DircSync it needed to be re-enabled and the affected mailboxes that said "in cloud" needed deleted in users on 365 then removed using object ID in AAD. once they were removed you ...
Tom Burgoon's user avatar
1 vote

Exchange 2010 to 365 Questions

With 300 users you can really go either way, technically. It really depends on your end goals. If you want to get rid of Exchange, then you are looking at what is called "cloud-only deployment". I ...
Jesus Shelby's user avatar
  • 1,304
1 vote

Exchange 2010 to 365 Questions

I only do hybrid. Other methods do not even enter the equation. Things can get in the way, you can find issues, the client can even change their mind! Hybrid allows you to test everything as you go ...
Sembee's user avatar
  • 2,884
1 vote

What's is the best way to migrate dovecot imap accounts to office365

Microsoft provide a method of migrating IMAP accounts to Office365. Effectively you upload a csv file containing the IMAP account information to your office365 account and the office365 servers will ...
Drifter104's user avatar
  • 3,823
1 vote

How to reconcile user with both on-premise and cloud mailboxes?

Thanks Mauro! It worked for me, U had to add -UserPrincipalName to your command and it worked for me! Remove-MsolUser -UserPrincipalName youruser@youroffice365domain -Force Remove-MsolUser -...
Tony's user avatar
  • 11
1 vote

Exchange Autodiscover Authentication fails after mailbox migration from 2010 to 2013 is completed; until server is backed up or rebooted

This issue occurs because the cache on the server didn't get update. Generally, recycle the Autodiscover application pool on Exchange 2013 server would be enough: Restart-WebAppPool ...
Sue.J's user avatar
  • 396
1 vote

Exchange 2010: Replication Service Still Trying to Replicate Deleted Mailbox Store

Run "find" option thru Registry on Exchange Nodes to look 'EXCHSERVER' name or you can look for old DB GUID. You will find old, not existing DBs which were mounted on old/decommissioned 'EXCHSERVER' ...
Dragan Loncarski's user avatar

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