Office Crash on Launch: Event ID 1000 and 0xc0000005 Access Violation Explained
Event ID 1000 with 0xc0000005 shows which module crashes Word, Excel or Outlook. Read the faulting module and disable the add-in behind the crash.
Bitdefender threat scanner cannot be initialized: the scan engine never loads
The scan engine failed to load, so nothing is being examined. Bitdefender publishes no meaning, so here is what the codes beside it show.