OneDrive for Business file limits

Rudy_Ooms_MVP Thanks for that info Rudy.

I guess we all have to be OneDrive guru's these days since Microsoft refuses to address the core issues associated with their client.  Those issues impose severe limitation upon our teams to conduct business properly; which is the sole purpose for Microsoft 365 app ecosystem after all.

1. 300000 files or greater in a document library can and often does lock up the OneDrive client from being able to continue to perform any synchronization of files with that document library or any other, no matter the size.

2. The sync buttons on document libraries that contain larger than 300000 files exist; no effort at all is made to restrict end users from getting into trouble and locking up their OneDrive client.

3. A OneDrive client that is locked up may appear to be functioning perfectly; when in reality it is not syncing anything any longer due to being locked up by a large syncing document library.

4. Absolutely zero documentation exists from Microsoft that points to any of these issues, only in passing can you find some documentation associated with these things and it is usually from the users, not the owners.

As I regularly am asked to migrate large file shares into document libraries as part of a migration path, it is critical to our operations that we understand these limits and deal with them accordingly.  If this new client is able to handle greater than 300000 files without the risk of locking up, it would be a game changer towards how we are able to integrate file share migrations in our tenant.  I figured asking the question in a Microsoft forum would be a good avenue to get that information.  Please let us know Microsoft, this is extremely important.