FileZilla Forums

Hi, I've tried searching but can't find the exact answer to my issue.
I've been connecting to one FTP for years, using FileZilla, and had no issues.
Recently I've been getting this error message, and can't connect to the FTP to be able to download files.

Response: 421-Sorry, cleartext sessions and weak ciphers are not accepted on this server.
Response: 421 Please reconnect using TLS security mechanisms.

I've deleted and re-installed FileZilla. See below for info:

FileZilla Client
----------------

Version: 3.55.0

Build information:
Compiled for: x86_64-w64-mingw32
Compiled on: x86_64-pc-linux-gnu
Build date: 2021-07-09
Compiled with: x86_64-w64-mingw32-gcc (GCC) 8.3-win32 20190406
Compiler flags: -O2 -g -Wall -Wextra -pedantic -ffunction-sections -fdata-sections -Wno-cast-function-type

Linked against:
wxWidgets: 3.0.6
SQLite: 3.31.1
GnuTLS: 3.6.15

Operating system:
Name: Windows 10 (build 19041), 64-bit edition
Version: 10.0
Platform: 64-bit system
CPU features: sse sse2 sse3 ssse3 sse4.1 sse4.2 avx avx2 aes pclmulqdq rdrnd bmi bmi2 adx lm
Settings dir: C:\Users\cleme\AppData\Roaming\FileZilla\

And my Operating system:
Processor: 11th Gen Intel (R) Core (TM) @ 2.80GHz
System-type: 64-bit operating system, x64-based processor
Windows 10 Home version 2004

Many thanks for your help!
ClemD

If you connect through the Site Manager, make sure either "Use explicit FTP over TLS if available" or "Require explicit FTP over TLS" is selected under Encryption.