O365 admins and users rejoice!
If you’re familiar with SharePoint and have users who have complained about not being able to use certain characters in file/folder names? You can now tell them they can in fact use “#” and “%” characters in their naming schemes.
If the tenant was created before June 2017 a Tenant Admin will have to use PowerShell to toggle the SpecialCharactersStateInFileFolderNames parameter to Allowed. After that, file and folder names can include # and %. Site and web names cannot. You’ll also have to have the OneDrive Next Gen Sync Client to sync files and folders with # and % in their names.
This only pertains to OneDrive for Business with SPO and Office 365. It is not for SharePoint Server 2016 on-prem.
Be sure to check out the Microsoft TechNet Blog article in its entirety. There are more file/folder limitations that have been improved or removed altogether.
Microsoft is furiously upgrading/updating the Online services. Some limitations have plagued Admins as well as end users for eons (in Software years). Chunking away at some these nagging irritations gives me faith that the O365 suite of tools will be around for a good while.