A file does not get synced from the server, but can be seen in the web client. Why?

Problem

A file does not get synced from the server, but can be seen in the web client. Why?

Solution

This may happen for a number of reasons:

  1. Files or folders with a full path exceeding the allowed Windows limit (248 characters) will not be synced.
  2. When there are items with the same name in the same folder, only one will be synced.
  3. If the content of the file was not uploaded correctly a .cov version of the file will be created on the disk but the actual file will never be synced.