Office 365 Hosted Exchange Attachment size limit

Been doing O365 for a while now and just converted an office from on premise Exchange to hosted.  For the first time, ran into a problem of sending large attachments.  
No problem, increase the user's limit and all should be good to go.  It is with OWA but not with Outlook 2010/2013.

Should I also have to modify the reg entry for Outlook's limitation on each laptop/PC?

I ask this because with on premise, never have I had to do this and since I've changed this limitation, after waiting a couple of hours still the client gets the message.  Actually this message is coming from a third party application when from inside the application they are "sending" an email.

Of course, the same laptops were joined to the old domain last week and had no issues with the on premise server.  But since the change, the same laptop joined to the new domain does.

Thanks for any input.
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Amit KumarCommented:
Please follow this article, it will help you to configure this.

You can customize the maximum allowed message size for any and all your mailboxes however you see fit. Want to go wild and allow everyone to send and receive 100 MB size messages? Go for it. Want to restrict students in your school from sending messages larger than 5 MB, while the faculty can send up to 50 MB? No problem. Do you have a hybrid mail configuration (some mailboxes on-premises, some in the cloud) and you want a consistent 10 MB restriction regardless where the mailbox is hosted? We have you covered. Whatever custom configuration you want to apply, whether for one, some, or all your mailboxes you can do it—as long as it’s between 1 MB and 150 MB.
RFloyd30Author Commented:
Thanks, you really did not read my question but that's okay.  The Exchange side of the size limit has been completed.  OWA see's that change and can send large attachments.  The problem is with Outlook client on a laptop/PC.   Sorry if I was not clear.

However, it appears that you must change the registry key on each laptop/PC for Outlook clients.

Even though it reads IMAP, POP3...  close Outlook, make the change, open Outlook and you will be good to go.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
RFloyd30Author Commented:
I found the solution myself, tested it and confirmed it solved the issue for my environment.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Office 365

From novice to tech pro — start learning today.