Microsoft OneDrive sign-in issue after Microsoft 365 tenant-to-tenant migration (solution)

[MathieuVandenHautte]

Hi all,

I want to share the solution because this was a hard one. After a Microsoft 365 tenant-to-tenant migration, users had to sign in to their OneDrive again but the sign-in popup kept pointing to the old tenant.

The solution is to delete the folder "%localappdata%\Microsoft\IdentityCache".

[#2]

or use this:
Intune and laptop migration
https://cloudiway.com/solutions/intune-migration/

[#3]

Holly crap. Thanks so much this has just fixed months of headaches.

[#4]

This fixes log in issues with all the 0365 apps