Solid Edge Files are opening as read-only

Files are becoming read-only when opened by the user that created them.

Check the file Status and make sure it is "Available". If it is, then open Solid Edge Options and select Manage. Disable the option "Enable distributed file access when using file replication services...

You can check the properties of the file itself. In File Explorer, locate the file, right-click and select Properties. On the Security tab make sure you have "Full Access"...