Using QB Pro 2020, but not on a daily basis.  Sent invoices via "send forms" sucessfuly about a month ago without issue. I got a QB update and launched it (required restart). I cannot "send forms" as it locks up and must use task mgr to end QB!  Multiple trys to go to "preferences, send forms" and immediate freeze. Utilized file repair to check company file.

Using Microsoft 10, all current updates, no other issues with mail server (outlook) or any other app, Performed system maintenance, performance, and functioning properly. Sought help with QB Support. On phone +3 1/2 hrs trying this + that, everything I had done so far in QB plus, remove & reinstall QB Pro 2020, QB Patches, checked versions, to no avail! very frustrated as business is stalled for a week trying to resolve this issue. Everything points to corruption in QB as PC server has no issues. Told by QB Support that they escallated to Tech Support, but not calling back! Told I need to buy expensive annual service to repair QB problem. UGH!