I am having a similar issue (TT Desktop Premier). Browser Message comes back saying Fidelity import successful, but on returning to TT, message says unable to import 1099-B. Have tried Firefox and Edge, clearing Cache, enabling popups- without success. I am escalating at Fidelity, as I at least have a contact and some small influence. This is not something I am going to be able to do manually as I have about 2500 transactions.
