The new update of Thunderbird caused us a few issues, but after resolving those, we're stuck with one we can't fathom. My partner and I both use ESET Internet Security (Both have version and the same version of Thunderbird  (78.4.0 32 Bit) We also both connect to the same mail server. I have no problems getting my email. My partner, on the other hand, gets stuck a 'fetching email'. The only way for her to actually fetch email is to briefly disable ESET's 'Email Pro