Office 365 Pro Plus - We can't remove Windows accounts when attempting to Sign On

Client inadvertently created then used portal accounts prior to a cutover migration to office 365.
Client wanted to begin utilizing the Office Suite Software that they paid for.
Unfortunately, cutover migrations require a clean portal (at least free from any soon-to-be DirSynced user).

We asked client to create temp email address/365 portal accounts so users could sign out of Office 365 as their standard email/UPN accounts.  
They could then login to Office suite as the temp accounts.
We would then delete all the non-temp accounts and perform our cutover migration.

Issue:

When user clicks Sign Out in Office (Word, for example - user clicks File > Account  > Sign Out) they receive this error message:

We can't remove Windows accounts
 Office 365 ErrorWe have attempted to use this article: http://support.microsoft.com/kb/2750229 but to no avail.

Just need to get past this issue to get started on the migration.
Thank you for your time in advance.

- KB
LVL 8
K BAsked:
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K BAuthor Commented:
1. uncheck license on 365 portal of user (that needs to be deleted)
2. Open Word Click Switch Account
3. Type temp username and password
4. Delete from 365 portal the user (that needs to be deleted)

done
0

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anish_mukherjeeCommented:
Hi
Please check out the below link that has a good workaround. It worked for us. It talks about deleting / modifying the registry.

https://community.office365.com/en-us/f/172/t/179286

Changing the IdP value to 3 worked.
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