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Hi, anyone able to help? I have had filezilla running for a few years, and no issues until now.

The only thing thats changed is virgin media upgraded my broadband package, from vivid350 to vivid500. They replaced my superhub3 as there were issues with the last one.
This is in modem mode and its connected to unifi USG gateway router. All the ports are forwarded to the correct IP numbers (20,21,990) and the certificate is upto date and valid.
since they upgraded my broadband we cannot upload any files to the ftp. everything else works perfectly except uploading? keep getting this error .

Data Socket Error: Failed TLSv1 negotiation, disconnected

can anyone advise? sorry if this info is not very good, im not an expert at this

here is a log of trying to upload a file to the ftp earlier as a test

2019-05-30 12:04:48 8824 1 Status: Resolving address of ***********
2019-05-30 12:04:48 8824 1 Status: Connecting to **.*.**.***:21...
2019-05-30 12:04:48 8824 1 Status: Connection established, waiting for welcome message...
2019-05-30 12:04:48 8824 1 Response: 220 Network 14
2019-05-30 12:04:48 8824 1 Command: AUTH TLS
2019-05-30 12:04:48 8824 1 Response: 234 Using authentication type TLS
2019-05-30 12:04:48 8824 1 Status: Initializing TLS...
2019-05-30 12:04:48 8824 1 Status: Verifying certificate...
2019-05-30 12:04:48 8824 1 Status: TLS connection established.
2019-05-30 12:04:48 8824 1 Command: USER ******
2019-05-30 12:04:48 8824 1 Response: 331 Password required for *******
2019-05-30 12:04:48 8824 1 Command: PASS **********
2019-05-30 12:04:48 8824 1 Response: 230 Logged on
2019-05-30 12:04:48 8824 1 Command: SYST
2019-05-30 12:04:48 8824 1 Response: 215 UNIX emulated by FileZilla
2019-05-30 12:04:48 8824 1 Command: FEAT
2019-05-30 12:04:48 8824 1 Response: 211-Features:
2019-05-30 12:04:48 8824 1 Response: MDTM
2019-05-30 12:04:48 8824 1 Response: REST STREAM
2019-05-30 12:04:48 8824 1 Response: SIZE
2019-05-30 12:04:48 8824 1 Response: MLST type*;size*;modify*;
2019-05-30 12:04:48 8824 1 Response: MLSD
2019-05-30 12:04:48 8824 1 Response: AUTH SSL
2019-05-30 12:04:48 8824 1 Response: AUTH TLS
2019-05-30 12:04:48 8824 1 Response: PROT
2019-05-30 12:04:48 8824 1 Response: PBSZ
2019-05-30 12:04:48 8824 1 Response: UTF8
2019-05-30 12:04:48 8824 1 Response: CLNT
2019-05-30 12:04:48 8824 1 Response: MFMT
2019-05-30 12:04:48 8824 1 Response: EPSV
2019-05-30 12:04:48 8824 1 Response: EPRT
2019-05-30 12:04:48 8824 1 Response: 211 End
2019-05-30 12:04:48 8824 1 Command: PBSZ 0
2019-05-30 12:04:48 8824 1 Response: 200 PBSZ=0
2019-05-30 12:04:48 8824 1 Command: PROT P
2019-05-30 12:04:48 8824 1 Response: 200 Protection level set to P
2019-05-30 12:04:48 8824 1 Status: Logged in
2019-05-30 12:04:48 8824 1 Status: Retrieving directory listing...
2019-05-30 12:04:48 8824 1 Command: PWD
2019-05-30 12:04:48 8824 1 Response: 257 "/" is current directory.
2019-05-30 12:04:48 8824 1 Command: TYPE I
2019-05-30 12:04:48 8824 1 Response: 200 Type set to I
2019-05-30 12:04:48 8824 1 Command: PASV
2019-05-30 12:04:49 8824 1 Response: 227 Entering Passive Mode (**,*,**,***,***,***)
2019-05-30 12:04:49 8824 1 Command: MLSD
2019-05-30 12:04:49 8824 1 Response: 150 Opening data channel for directory listing of "/"
2019-05-30 12:04:49 8824 1 Response: 226 Successfully transferred "/"
2019-05-30 12:04:49 8824 1 Status: Directory listing of "/" successful
2019-05-30 12:04:52 8824 1 Status: Retrieving directory listing of "/Upload"...
2019-05-30 12:04:52 8824 1 Command: CWD /Upload
2019-05-30 12:04:52 8824 1 Response: 250 CWD successful. "/Upload" is current directory.
2019-05-30 12:04:52 8824 1 Command: PWD
2019-05-30 12:04:52 8824 1 Response: 257 "/Upload" is current directory.
2019-05-30 12:04:52 8824 1 Command: PASV
2019-05-30 12:04:52 8824 1 Response: 227 Entering Passive Mode (**,*,**,***,***,***)
2019-05-30 12:04:52 8824 1 Command: MLSD
2019-05-30 12:04:52 8824 1 Response: 150 Opening data channel for directory listing of "/Upload"
2019-05-30 12:04:52 8824 1 Response: 226 Successfully transferred "/Upload"
2019-05-30 12:04:52 8824 1 Status: Directory listing of "/Upload" successful
2019-05-30 12:05:01 8824 2 Status: Resolving address of ***********
2019-05-30 12:05:01 8824 2 Status: Connecting to **.*.**.***:21...
2019-05-30 12:05:01 8824 2 Status: Connection established, waiting for welcome message...
2019-05-30 12:05:01 8824 2 Response: 220 Network 14
2019-05-30 12:05:01 8824 2 Command: AUTH TLS
2019-05-30 12:05:01 8824 2 Response: 234 Using authentication type TLS
2019-05-30 12:05:01 8824 2 Status: Initializing TLS...
2019-05-30 12:05:02 8824 2 Status: Verifying certificate...
2019-05-30 12:05:02 8824 2 Status: TLS connection established.
2019-05-30 12:05:02 8824 2 Command: USER *******
2019-05-30 12:05:02 8824 2 Response: 331 Password required for ***********
2019-05-30 12:05:02 8824 2 Command: PASS ****************
2019-05-30 12:05:02 8824 2 Response: 230 Logged on
2019-05-30 12:05:02 8824 2 Command: PBSZ 0
2019-05-30 12:05:02 8824 2 Response: 200 PBSZ=0
2019-05-30 12:05:02 8824 2 Command: PROT P
2019-05-30 12:05:02 8824 2 Response: 200 Protection level set to P
2019-05-30 12:05:02 8824 2 Status: Logged in
2019-05-30 12:05:02 8824 2 Status: Starting upload of C:\Users\********\Desktop\444.xlsx
2019-05-30 12:05:02 8824 2 Command: CWD /Upload
2019-05-30 12:05:02 8824 2 Response: 250 CWD successful. "/Upload" is current directory.
2019-05-30 12:05:02 8824 2 Command: TYPE I
2019-05-30 12:05:02 8824 2 Response: 200 Type set to I
2019-05-30 12:05:02 8824 2 Command: PASV
2019-05-30 12:05:02 8824 2 Response: 227 Entering Passive Mode (**,*,**,***,***,***)
2019-05-30 12:05:02 8824 2 Command: STOR 444.xlsx
2019-05-30 12:05:02 8824 2 Error: Transfer connection interrupted: ECONNABORTED - Connection aborted
2019-05-30 12:05:02 8824 2 Response: 150 Opening data channel for file upload to server of "/Upload/444.xlsx"
2019-05-30 12:05:02 8824 2 Response: 550 can't access file.
2019-05-30 12:05:02 8824 2 Error: File transfer failed
2019-05-30 12:05:02 8824 2 Status: Starting upload of C:\Users\pbianco\Desktop\444.xlsx
2019-05-30 12:05:02 8824 2 Status: Retrieving directory listing of "/Upload"...
2019-05-30 12:05:02 8824 2 Command: PASV
2019-05-30 12:05:02 8824 2 Response: 227 Entering Passive Mode (**,*,**,***,***,***)
2019-05-30 12:05:02 8824 2 Command: MLSD
2019-05-30 12:05:02 8824 2 Response: 150 Opening data channel for directory listing of "/Upload"
2019-05-30 12:05:02 8824 2 Response: 226 Successfully transferred "/Upload"
2019-05-30 12:05:02 8824 2 Command: PASV
2019-05-30 12:05:02 8824 2 Response: 227 Entering Passive Mode (**,*,**,***,***,***)
2019-05-30 12:05:02 8824 2 Command: STOR 444.xlsx
2019-05-30 12:05:02 8824 2 Response: 150 Opening data channel for file upload to server of "/Upload/444.xlsx"
2019-05-30 12:05:02 8824 2 Response: 550 can't access file.
2019-05-30 12:05:02 8824 2 Error: File transfer failed
2019-05-30 12:05:03 8824 2 Status: Starting upload of C:\Users\*********\Desktop\444.xlsx
2019-05-30 12:05:03 8824 2 Status: Retrieving directory listing of "/Upload"...
2019-05-30 12:05:03 8824 2 Command: PASV
2019-05-30 12:05:03 8824 2 Response: 227 Entering Passive Mode (**,*,**,***,***,***)
2019-05-30 12:05:03 8824 2 Command: MLSD
2019-05-30 12:05:03 8824 2 Response: 150 Opening data channel for directory listing of "/Upload"
2019-05-30 12:05:03 8824 2 Response: 226 Successfully transferred "/Upload"
2019-05-30 12:05:03 8824 2 Command: PASV
2019-05-30 12:05:03 8824 2 Response: 227 Entering Passive Mode (**,*,**,***,***,***)
2019-05-30 12:05:03 8824 2 Command: STOR 444.xlsx
2019-05-30 12:05:03 8824 2 Response: 150 Opening data channel for file upload to server of "/Upload/444.xlsx"
2019-05-30 12:05:03 8824 2 Response: 550 can't access file.
2019-05-30 12:05:03 8824 2 Error: File transfer failed
2019-05-30 12:05:03 8824 2 Status: Retrieving directory listing of "/Upload"...
2019-05-30 12:05:03 8824 2 Command: PASV
2019-05-30 12:05:03 8824 2 Response: 227 Entering Passive Mode (**,*,**,***,***,***)
2019-05-30 12:05:03 8824 2 Command: MLSD
2019-05-30 12:05:03 8824 2 Response: 150 Opening data channel for directory listing of "/Upload"
2019-05-30 12:05:03 8824 2 Response: 226 Successfully transferred "/Upload"
2019-05-30 12:05:03 8824 2 Status: Directory listing of "/Upload" successful

2019-05-30 12:05:02 8824 2 Response: 550 can't access file.

Either the Windows user account the FileZilla Server service runs under has no permissions to write to the target file, or the file is still opened by another program running on the server.

hi, thanks for the reply, ok so would that be the windows firewall? i turned that off and windows defender and still it wont write? and how would that of changed? ive not changed anything on that windows pc (windows 10) except virgin changing my broadband package?

Considering it's an xlsx file it could also be Excel. Other good candidates are third-party AV and backup products.

Hi, just an update.. thanks for the help. It was a permissions problem but not with the ftp or windows, it was actually one of my nas drives! after a firmware update for some stupid reason it changed the users access level to read only! sent a shitty email to the manufacturer as you can imagine! idiots changing my settings after an update!
anyway its fixed now so thanks for the advice