FTP: directory not found

What is the problem you are having with rclone?

FTP command not listing directory
Using the example Microsoft FTP encoding flag in the Ecoding Overview does not yield further results.

FTP protocol trace from network monitoring logs provided below with a successful Filezilla connection for comparison.

What is your rclone version (output from rclone version)

rclone v1.52.2-208-gbfa57150-beta
Also Experienced with rclone v1.52.1

Which OS you are using and how many bits (eg Windows 7, 64 bit)

Windows 10 Pro 64bit

Which cloud storage system are you using? (eg Google Drive)

suspected Windows FTP Server

The command you were trying to run (eg rclone copy /tmp remote:tmp)

rclone ls :ftp:FolderName --ftp-host=ftp.server.net --ftp-user=USERNAME --ftp-pass="OBSCUREDPASSWORD" --ftp-disable-epsv=True

Note: listing (ls) for root directory returns nothing. (ls) for Specific folder returns "directory not found"

The rclone config contents with secrets removed.

''

A log from the command with the -vv flag

2020/07/08 10:37:29 DEBUG : rclone: Version "v1.52.2-208-gbfa57150-beta" starting with parameters ["rclone" "lsd" ":ftp:FolderName" "--ftp-host=ftp.server.net" "--ftp-user=USERNAME" "--ftp-pass=OBSCUREDPASSWORD" "--ftp-disable-epsv=True" "-vv"]
2020/07/08 10:37:29 DEBUG : Using config file from "C:\\Users\\username\\.config\\rclone\\rclone.conf"
2020/07/08 10:37:29 DEBUG : ftp://ftp.server.net:21/FolderName: Connecting to FTP server
2020/07/08 10:37:30 ERROR : : error listing: directory not found
2020/07/08 10:37:30 DEBUG : 2 go routines active
2020/07/08 10:37:30 Failed to lsd with 2 errors: last error was: directory not found

Windows Net Monitor Log for RCLONE

142742	9:53:30 AM 7/8/2020	1496.4878222	rclone.exe	LOCALMACHINE  	10.2.2.22	    TCP	TCP:Flags=......S., SrcPort=56307, DstPort=DCE endpoint resolution(135), PayloadLen=0, Seq=632478909, Ack=0, Win=64240 ( Negotiating scale factor 0x8 ) = 64240	{TCP:7140, IPv4:14}
142745	9:53:30 AM 7/8/2020	1496.5067555	rclone.exe	10.2.2.22	    LOCALMACHINE  	TCP	TCP:Flags=...A..S., SrcPort=DCE endpoint resolution(135), DstPort=56307, PayloadLen=0, Seq=2400774204, Ack=632478910, Win=8192 ( Negotiated scale factor 0x8 ) = 2097152	{TCP:7140, IPv4:14}
142746	9:53:30 AM 7/8/2020	1496.5068184	rclone.exe	LOCALMACHINE  	10.2.2.22	    TCP	TCP:Flags=...A...., SrcPort=56307, DstPort=DCE endpoint resolution(135), PayloadLen=0, Seq=632478910, Ack=2400774205, Win=1024 (scale factor 0x8) = 262144	{TCP:7140, IPv4:14}
142747	9:53:30 AM 7/8/2020	1496.5076492	rclone.exe	LOCALMACHINE  	10.2.2.22	    MSRPC	MSRPC:c/o Bind: EPT(EPMP) UUID{E1AF8308-5D1F-11C9-91A4-08002B14A0FA}  Call=0x2  Assoc Grp=0x0  Xmit=0x16D0  Recv=0x16D0 	{MSRPC:7141, TCP:7140, IPv4:14}
142749	9:53:30 AM 7/8/2020	1496.5262803	rclone.exe	10.2.2.22	    LOCALMACHINE  	MSRPC	MSRPC:c/o Bind Ack:  Call=0x2  Assoc Grp=0x3193E  Xmit=0x16D0  Recv=0x16D0 	{MSRPC:7141, TCP:7140, IPv4:14}
142750	9:53:30 AM 7/8/2020	1496.5263874	rclone.exe	LOCALMACHINE  	10.2.2.22	    EPM	EPM:Request: ept_map: NDR, DRSR(DRSR) {E3514235-4B06-11D1-AB04-00C04FC2DCD2} v4.0, RPC v5, 0.0.0.0:135 (0x87) [DCE endpoint resolution(135)]	{MSRPC:7141, TCP:7140, IPv4:14}
142752	9:53:30 AM 7/8/2020	1496.5452183	rclone.exe	10.2.2.22	    LOCALMACHINE  	EPM	EPM:Response: ept_map: NDR, DRSR(DRSR) {E3514235-4B06-11D1-AB04-00C04FC2DCD2} v4.0, RPC v5, 10.2.2.22:49155 (0xC003) [49155]	{MSRPC:7141, TCP:7140, IPv4:14}
142753	9:53:30 AM 7/8/2020	1496.5480612	rclone.exe	LOCALMACHINE  	10.2.2.22	    TCP	TCP:Flags=......S., SrcPort=56308, DstPort=49155, PayloadLen=0, Seq=2189315442, Ack=0, Win=64240 ( Negotiating scale factor 0x8 ) = 64240	{TCP:7142, IPv4:14}
142754	9:53:30 AM 7/8/2020	1496.5669050	rclone.exe	10.2.2.22	    LOCALMACHINE  	TCP	TCP:Flags=...A..S., SrcPort=49155, DstPort=56308, PayloadLen=0, Seq=2310783443, Ack=2189315443, Win=8192 ( Negotiated scale factor 0x8 ) = 2097152	{TCP:7142, IPv4:14}
142755	9:53:30 AM 7/8/2020	1496.5669514	rclone.exe	LOCALMACHINE  	10.2.2.22	    TCP	TCP:Flags=...A...., SrcPort=56308, DstPort=49155, PayloadLen=0, Seq=2189315443, Ack=2310783444, Win=1024 (scale factor 0x8) = 262144	{TCP:7142, IPv4:14}
142756	9:53:30 AM 7/8/2020	1496.5672829	rclone.exe	LOCALMACHINE  	10.2.2.22	    MSRPC	MSRPC:c/o Bind: DRSR(DRSR) UUID{E3514235-4B06-11D1-AB04-00C04FC2DCD2}  Call=0x2  Assoc Grp=0x0  Xmit=0x16D0  Recv=0x16D0 	{MSRPC:7143, TCP:7142, IPv4:14}
142757	9:53:30 AM 7/8/2020	1496.5858965	rclone.exe	LOCALMACHINE  	10.2.2.22	    TCP	TCP:Flags=...A...., SrcPort=56307, DstPort=DCE endpoint resolution(135), PayloadLen=0, Seq=632479238, Ack=2400774485, Win=1023 (scale factor 0x8) = 261888	{TCP:7140, IPv4:14}
142758	9:53:30 AM 7/8/2020	1496.5864589	rclone.exe	10.2.2.22	    LOCALMACHINE  	TCP	TCP:Flags=...A...., SrcPort=49155, DstPort=56308, PayloadLen=0, Seq=2310783444, Ack=2189317631, Win=258 (scale factor 0x8) = 66048	{TCP:7142, IPv4:14}
142759	9:53:30 AM 7/8/2020	1496.5873392	rclone.exe	10.2.2.22	    LOCALMACHINE  	MSRPC	MSRPC:c/o Bind Ack:  Call=0x2  Assoc Grp=0x32D21  Xmit=0x16D0  Recv=0x16D0 	{MSRPC:7143, TCP:7142, IPv4:14}
142760	9:53:30 AM 7/8/2020	1496.5875520	rclone.exe	LOCALMACHINE  	10.2.2.22	    MSRPC	MSRPC:c/o Alter Cont: DRSR(DRSR)  UUID{E3514235-4B06-11D1-AB04-00C04FC2DCD2}  Call=0x2 	{MSRPC:7143, TCP:7142, IPv4:14}
142761	9:53:30 AM 7/8/2020	1496.6066379	rclone.exe	10.2.2.22	    LOCALMACHINE  	MSRPC	MSRPC:c/o Alter Cont Resp:  Call=0x2  Assoc Grp=0x32D21  Xmit=0x16D0  Recv=0x16D0 	{MSRPC:7143, TCP:7142, IPv4:14}
142762	9:53:30 AM 7/8/2020	1496.6098890	rclone.exe	LOCALMACHINE  	10.2.2.22	    DRSR	DRSR:Windows stub parser: Requires full Common parsers. See the "How Do I Change Parser Set Options(Version 3.3 or before) or Configure Parser Profile (Version 3.4)" help topic for tips on loading these parser sets.	{MSRPC:7143, TCP:7142, IPv4:14}
142763	9:53:30 AM 7/8/2020	1496.6289552	rclone.exe	10.2.2.22	    LOCALMACHINE  	DRSR	DRSR:Windows stub parser: Requires full Common parsers. See the "How Do I Change Parser Set Options(Version 3.3 or before) or Configure Parser Profile (Version 3.4)" help topic for tips on loading these parser sets.	{MSRPC:7143, TCP:7142, IPv4:14}
142764	9:53:30 AM 7/8/2020	1496.6290923	rclone.exe	LOCALMACHINE  	10.2.2.22	    DRSR	DRSR:Windows stub parser: Requires full Common parsers. See the "How Do I Change Parser Set Options(Version 3.3 or before) or Configure Parser Profile (Version 3.4)" help topic for tips on loading these parser sets.	{MSRPC:7143, TCP:7142, IPv4:14}
142765	9:53:30 AM 7/8/2020	1496.6483172	rclone.exe	10.2.2.22	    LOCALMACHINE  	DRSR	DRSR:Windows stub parser: Requires full Common parsers. See the "How Do I Change Parser Set Options(Version 3.3 or before) or Configure Parser Profile (Version 3.4)" help topic for tips on loading these parser sets.	{MSRPC:7143, TCP:7142, IPv4:14}
142766	9:53:30 AM 7/8/2020	1496.6484176	rclone.exe	LOCALMACHINE  	10.2.2.22	    DRSR	DRSR:Windows stub parser: Requires full Common parsers. See the "How Do I Change Parser Set Options(Version 3.3 or before) or Configure Parser Profile (Version 3.4)" help topic for tips on loading these parser sets.	{MSRPC:7143, TCP:7142, IPv4:14}
142768	9:53:30 AM 7/8/2020	1496.6671476	rclone.exe	10.2.2.22	    LOCALMACHINE  	DRSR	DRSR:Windows stub parser: Requires full Common parsers. See the "How Do I Change Parser Set Options(Version 3.3 or before) or Configure Parser Profile (Version 3.4)" help topic for tips on loading these parser sets.	{MSRPC:7143, TCP:7142, IPv4:14}
142769	9:53:30 AM 7/8/2020	1496.6953922	rclone.exe	LOCALMACHINE  	ftp.server.net	TCP	TCP:Flags=......S., SrcPort=56309, DstPort=FTP control(21), PayloadLen=0, Seq=4274504, Ack=0, Win=64240 ( Negotiating scale factor 0x8 ) = 64240	{TCP:7144, IPv4:64}
142770	9:53:30 AM 7/8/2020	1496.7069222	rclone.exe	LOCALMACHINE  	10.2.2.22	    TCP	TCP:Flags=...A...., SrcPort=56308, DstPort=49155, PayloadLen=0, Seq=2189318511, Ack=2310784494, Win=1020 (scale factor 0x8) = 261120	{TCP:7142, IPv4:14}
142771	9:53:30 AM 7/8/2020	1496.7118511	rclone.exe	ftp.server.net	LOCALMACHINE  	TCP	TCP:Flags=...A..S., SrcPort=FTP control(21), DstPort=56309, PayloadLen=0, Seq=3585242306, Ack=4274505, Win=29200 ( Negotiated scale factor 0x7 ) = 3737600	{TCP:7144, IPv4:64}
142772	9:53:30 AM 7/8/2020	1496.7118956	rclone.exe	LOCALMACHINE  	ftp.server.net	TCP	TCP:Flags=...A...., SrcPort=56309, DstPort=FTP control(21), PayloadLen=0, Seq=4274505, Ack=3585242307, Win=1024 (scale factor 0x8) = 262144	{TCP:7144, IPv4:64}
142780	9:53:30 AM 7/8/2020	1496.7313616	rclone.exe	ftp.server.net	LOCALMACHINE  	FTP	FTP:Response to Port 56309, '220  Microsoft FTP Service'	{TCP:7144, IPv4:64}
142781	9:53:30 AM 7/8/2020	1496.7314753	rclone.exe	LOCALMACHINE  	ftp.server.net	FTP	FTP:Request from Port 56309, 'FEAT'	{TCP:7144, IPv4:64}
142782	9:53:30 AM 7/8/2020	1496.7472683	rclone.exe	ftp.server.net	LOCALMACHINE  	TCP	TCP:Flags=...A...., SrcPort=FTP control(21), DstPort=56309, PayloadLen=0, Seq=3585242334, Ack=4274511, Win=229 (scale factor 0x7) = 29312	{TCP:7144, IPv4:64}
142783	9:53:30 AM 7/8/2020	1496.7482862	rclone.exe	ftp.server.net	LOCALMACHINE  	FTP	FTP:Response to Port 56309, '211 -Extended features supported:'	{TCP:7144, IPv4:64}
142784	9:53:30 AM 7/8/2020	1496.7483922	rclone.exe	LOCALMACHINE  	ftp.server.net	FTP	FTP:Request from Port 56309,'USER USERNAME'	{TCP:7144, IPv4:64}
142785	9:53:30 AM 7/8/2020	1496.7655231	rclone.exe	ftp.server.net	LOCALMACHINE  	FTP	FTP:Response to Port 56309, '331  Password required'	{TCP:7144, IPv4:64}
142786	9:53:30 AM 7/8/2020	1496.7656073	rclone.exe	LOCALMACHINE  	ftp.server.net	FTP	FTP:Request from Port 56309,'PASS PASSWORD'	{TCP:7144, IPv4:64}
142787	9:53:30 AM 7/8/2020	1496.7839788	rclone.exe	ftp.server.net	LOCALMACHINE  	FTP	FTP:Response to Port 56309, '230 -Welcome to FTP Site.'	{TCP:7144, IPv4:64}
142788	9:53:30 AM 7/8/2020	1496.7840525	rclone.exe	LOCALMACHINE    ftp.server.net	FTP	FTP:Request from Port 56309,'TYPE I'	{TCP:7144, IPv4:64}
142789	9:53:30 AM 7/8/2020	1496.8012276	rclone.exe	ftp.server.net  LOCALMACHINE  	FTP	FTP:Response to Port 56309, '200  Type set to I.'	{TCP:7144, IPv4:64}
142790	9:53:30 AM 7/8/2020	1496.8012972	rclone.exe	LOCALMACHINE  	ftp.server.net	FTP	FTP:Request from Port 56309,'OPTS UTF8 ON'	{TCP:7144, IPv4:64}
142791	9:53:30 AM 7/8/2020	1496.8181766	rclone.exe	ftp.server.net  LOCALMACHINE  	FTP	FTP:Response to Port 56309, '200  OPTS UTF8 command successful - UTF8 encoding now ON.'	{TCP:7144, IPv4:64}
142792	9:53:30 AM 7/8/2020	1496.8182528	rclone.exe	LOCALMACHINE  	ftp.server.net	FTP	FTP:Request from Port 56309, 'EPSV'	{TCP:7144, IPv4:64}
142794	9:53:30 AM 7/8/2020	1496.8343874	rclone.exe	ftp.server.net	LOCALMACHINE  	FTP	FTP:Response to Port 56309, '534  Request denied for policy reasons.'	{TCP:7144, IPv4:64}
142795	9:53:30 AM 7/8/2020	1496.8344641	rclone.exe	LOCALMACHINE  	ftp.server.net	FTP	FTP:Request from Port 56309, 'PASV'	{TCP:7144, IPv4:64}
142796	9:53:30 AM 7/8/2020	1496.8517497	rclone.exe	ftp.server.net	LOCALMACHINE  	FTP	FTP:Response to Port 56309, '227  Entering passive mode (66,191,64,178,112,3).'	{TCP:7144, IPv4:64}
142800	9:53:30 AM 7/8/2020	1496.8686446	rclone.exe	LOCALMACHINE  	ftp.server.net	FTP	FTP:Request from Port 56309,'LIST .'	{TCP:7144, IPv4:64}
142801	9:53:30 AM 7/8/2020	1496.8857006	rclone.exe	ftp.server.net	LOCALMACHINE  	FTP	FTP:Response to Port 56309, '150  Opening BINARY mode data connection.'	{TCP:7144, IPv4:64}
142802	9:53:30 AM 7/8/2020	1496.8868806	rclone.exe	ftp.server.net	LOCALMACHINE  	FTP	FTP:Response to Port 56309, '226 -Directory has 28,336,971,776 bytes of disk space available.'	{TCP:7144, IPv4:64}
142803	9:53:30 AM 7/8/2020	1496.8869029	rclone.exe	LOCALMACHINE  	ftp.server.net	TCP	TCP:Flags=...A...., SrcPort=56309, DstPort=FTP control(21), PayloadLen=0, Seq=4274578, Ack=3585243067, Win=1021 (scale factor 0x8) = 261376	{TCP:7144, IPv4:64}
142808	9:53:30 AM 7/8/2020	1496.8894619	rclone.exe	LOCALMACHINE  	ftp.server.net	FTP	FTP:Request from Port 56309, 'PASV'	{TCP:7144, IPv4:64}
142810	9:53:30 AM 7/8/2020	1496.9137997	rclone.exe	ftp.server.net	LOCALMACHINE  	FTP	FTP:Response to Port 56309, '227  Entering passive mode (66,191,64,178,216,75).'	{TCP:7144, IPv4:64}
142814	9:53:30 AM 7/8/2020	1496.9301972	rclone.exe	LOCALMACHINE  	ftp.server.net	FTP	FTP:Request from Port 56309,'LIST FolderName'	{TCP:7144, IPv4:64}
142815	9:53:30 AM 7/8/2020	1496.9473911	rclone.exe	ftp.server.net	LOCALMACHINE  	FTP	FTP:Response to Port 56309, '150  Opening BINARY mode data connection.'	{TCP:7144, IPv4:64}
142821	9:53:30 AM 7/8/2020	1496.9502621	rclone.exe	ftp.server.net	LOCALMACHINE  	FTP	FTP:Response to Port 56309, '226 -Directory has 28,336,971,776 bytes of disk space available.'	{TCP:7144, IPv4:64}
142823	9:53:30 AM 7/8/2020	1496.9502838	rclone.exe	LOCALMACHINE  	ftp.server.net	TCP	TCP:Flags=...A...., SrcPort=56309, DstPort=FTP control(21), PayloadLen=0, Seq=4274594, Ack=3585243249, Win=1020 (scale factor 0x8) = 261120	{TCP:7144, IPv4:64}
142829	9:53:30 AM 7/8/2020	1496.9507654	rclone.exe	LOCALMACHINE  	ftp.server.net	FTP	FTP:Request from Port 56309, 'PASV'	{TCP:7144, IPv4:64}
142832	9:53:30 AM 7/8/2020	1496.9682634	rclone.exe	ftp.server.net	LOCALMACHINE  	FTP	FTP:Response to Port 56309, '227  Entering passive mode (66,191,64,178,153,147).'	{TCP:7144, IPv4:64}
142833	9:53:30 AM 7/8/2020	1496.9687072	rclone.exe	LOCALMACHINE  	ftp.server.net	TCP	TCP:Flags=......S., SrcPort=56312, DstPort=39315, PayloadLen=0, Seq=1930246122, Ack=0, Win=64240 ( Negotiating scale factor 0x8 ) = 64240	{TCP:7147, IPv4:64}
142834	9:53:30 AM 7/8/2020	1496.9843685	rclone.exe	ftp.server.net	LOCALMACHINE  	TCP	TCP:Flags=...A..S., SrcPort=39315, DstPort=56312, PayloadLen=0, Seq=2259859340, Ack=1930246123, Win=29200 ( Negotiated scale factor 0x7 ) = 3737600	{TCP:7147, IPv4:64}
142835	9:53:30 AM 7/8/2020	1496.9844083	rclone.exe	LOCALMACHINE  	ftp.server.net	TCP	TCP:Flags=...A...., SrcPort=56312, DstPort=39315, PayloadLen=0, Seq=1930246123, Ack=2259859341, Win=1024 (scale factor 0x8) = 262144	{TCP:7147, IPv4:64}
142836	9:53:30 AM 7/8/2020	1496.9844858	rclone.exe	LOCALMACHINE  	ftp.server.net	FTP	FTP:Request from Port 56309,'LIST .'	{TCP:7144, IPv4:64}
142837	9:53:30 AM 7/8/2020	1497.0014836	rclone.exe	ftp.server.net	LOCALMACHINE  	FTP	FTP:Response to Port 56309, '150  Opening BINARY mode data connection.'	{TCP:7144, IPv4:64}
142838	9:53:30 AM 7/8/2020	1497.0029902	rclone.exe	ftp.server.net	LOCALMACHINE  	FTP	FTP:Response to Port 56309, '226 -Directory has 28,336,971,776 bytes of disk space available.'	{TCP:7144, IPv4:64}
142839	9:53:30 AM 7/8/2020	1497.0030114	rclone.exe	LOCALMACHINE  	ftp.server.net	TCP	TCP:Flags=...A...., SrcPort=56309, DstPort=FTP control(21), PayloadLen=0, Seq=4274608, Ack=3585243432, Win=1019 (scale factor 0x8) = 260864	{TCP:7144, IPv4:64}
142840	9:53:30 AM 7/8/2020	1497.0045113	rclone.exe	ftp.server.net	LOCALMACHINE  	TCP	TCP:Flags=...AP..., SrcPort=39315, DstPort=56312, PayloadLen=1204, Seq=2259859341 - 2259860545, Ack=1930246123, Win=229 (scale factor 0x7) = 29312	{TCP:7147, IPv4:64}
142841	9:53:30 AM 7/8/2020	1497.0045113	rclone.exe	ftp.server.net	LOCALMACHINE  	TCP	TCP:Flags=...A...F, SrcPort=39315, DstPort=56312, PayloadLen=0, Seq=2259860545, Ack=1930246123, Win=229 (scale factor 0x7) = 29312	{TCP:7147, IPv4:64}
142842	9:53:30 AM 7/8/2020	1497.0045403	rclone.exe	LOCALMACHINE  	ftp.server.net	TCP	TCP:Flags=...A...., SrcPort=56312, DstPort=39315, PayloadLen=0, Seq=1930246123, Ack=2259860546, Win=1019 (scale factor 0x8) = 260864	{TCP:7147, IPv4:64}
142843	9:53:30 AM 7/8/2020	1497.0046607	rclone.exe	LOCALMACHINE  	ftp.server.net	TCP	TCP:Flags=...A...F, SrcPort=56312, DstPort=39315, PayloadLen=0, Seq=1930246123, Ack=2259860546, Win=1019 (scale factor 0x8) = 260864	{TCP:7147, IPv4:64}
142844	9:53:30 AM 7/8/2020	1497.0079614	rclone.exe	LOCALMACHINE  	10.2.2.22	TCP	TCP:Flags=...A.R.., SrcPort=56308, DstPort=49155, PayloadLen=0, Seq=2189318511, Ack=2310784494, Win=0 (scale factor 0x8) = 0	{TCP:7142, IPv4:14}
142845	9:53:30 AM 7/8/2020	1497.0079852	rclone.exe	LOCALMACHINE  	10.2.2.22	TCP	TCP:Flags=...A.R.., SrcPort=56307, DstPort=DCE endpoint resolution(135), PayloadLen=0, Seq=632479238, Ack=2400774485, Win=0 (scale factor 0x8) = 0	{TCP:7140, IPv4:14}
142846	9:53:30 AM 7/8/2020	1497.0081087	rclone.exe	LOCALMACHINE  	ftp.server.net	TCP	TCP:Flags=...A.R.., SrcPort=56309, DstPort=FTP control(21), PayloadLen=0, Seq=4274608, Ack=3585243432, Win=0 (scale factor 0x8) = 0	{TCP:7144, IPv4:64}
142860	9:53:31 AM 7/8/2020	1497.3059086	rclone.exe	LOCALMACHINE  	ftp.server.net	TCP	TCP:[Segment Lost]Flags=...A...F, SrcPort=56312, DstPort=39315, PayloadLen=0, Seq=1930246123, Ack=2259860546, Win=1019 (scale factor 0x8) = 260864	{TCP:7147, IPv4:64}
142861	9:53:31 AM 7/8/2020	1497.3060270	rclone.exe	ftp.server.net	LOCALMACHINE  	TCP	TCP:Flags=.....R.., SrcPort=39315, DstPort=56312, PayloadLen=0, Seq=2259860546, Ack=0, Win=0 (scale factor 0x7) = 0	{TCP:7147, IPv4:64}

Windows Net Monitor Log for successful FileZilla connection for Comparison

76	10:10:49 AM 7/8/2020	4.1892314	filezilla.exe	LOCALMACHINE	ftp.server.net	    TCP	TCP:Flags=......S., SrcPort=57674, DstPort=FTP control(21), PayloadLen=0, Seq=2206362279, Ack=0, Win=64240 ( Negotiating scale factor 0x8 ) = 64240	{TCP:42, IPv4:41}
77	10:10:49 AM 7/8/2020	4.2116900	filezilla.exe	ftp.server.net	LOCALMACHINE	    TCP	TCP:Flags=...A..S., SrcPort=FTP control(21), DstPort=57674, PayloadLen=0, Seq=2418422912, Ack=2206362280, Win=29200 ( Negotiated scale factor 0x7 ) = 3737600	{TCP:42, IPv4:41}
78	10:10:49 AM 7/8/2020	4.2117489	filezilla.exe	LOCALMACHINE	ftp.server.net	    TCP	TCP:Flags=...A...., SrcPort=57674, DstPort=FTP control(21), PayloadLen=0, Seq=2206362280, Ack=2418422913, Win=1024 (scale factor 0x8) = 262144	{TCP:42, IPv4:41}
79	10:10:49 AM 7/8/2020	4.2435012	filezilla.exe	ftp.server.net	LOCALMACHINE	    FTP	FTP:Response to Port 57674, '220  Microsoft FTP Service'	{TCP:42, IPv4:41}
80	10:10:49 AM 7/8/2020	4.2460951	filezilla.exe	LOCALMACHINE	ftp.server.net	    FTP	FTP:Request from Port 57674,'USER USERNAME'	{TCP:42, IPv4:41}
81	10:10:49 AM 7/8/2020	4.2683911	filezilla.exe	ftp.server.net	LOCALMACHINE	    TCP	TCP:Flags=...A...., SrcPort=FTP control(21), DstPort=57674, PayloadLen=0, Seq=2418422940, Ack=2206362290, Win=229 (scale factor 0x7) = 29312	{TCP:42, IPv4:41}
82	10:10:49 AM 7/8/2020	4.2688939	filezilla.exe	ftp.server.net	LOCALMACHINE	    FTP	FTP:Response to Port 57674, '331  Password required'	{TCP:42, IPv4:41}
83	10:10:49 AM 7/8/2020	4.2690554	filezilla.exe	LOCALMACHINE	ftp.server.net	    FTP	FTP:Request from Port 57674,'PASS PASSWORD'	{TCP:42, IPv4:41}
84	10:10:49 AM 7/8/2020	4.2930749	filezilla.exe	ftp.server.net	LOCALMACHINE	    FTP	FTP:Response to Port 57674, '230 -Welcome FTP Site.'	{TCP:42, IPv4:41}
85	10:10:49 AM 7/8/2020	4.2932664	filezilla.exe	LOCALMACHINE	ftp.server.net	    FTP	FTP:Request from Port 57674,'OPTS UTF8 ON'	{TCP:42, IPv4:41}
86	10:10:49 AM 7/8/2020	4.3239663	filezilla.exe	ftp.server.net	LOCALMACHINE	    FTP	FTP:Response to Port 57674, '200  OPTS UTF8 command successful - UTF8 encoding now ON.'	{TCP:42, IPv4:41}
87	10:10:49 AM 7/8/2020	4.3241584	filezilla.exe	LOCALMACHINE	ftp.server.net	    FTP	FTP:Request from Port 57674,'CWD /FolderName'	{TCP:42, IPv4:41}
88	10:10:49 AM 7/8/2020	4.3464904	filezilla.exe	ftp.server.net	LOCALMACHINE	    FTP	FTP:Response to Port 57674, '250  CWD command successful.'	{TCP:42, IPv4:41}
89	10:10:49 AM 7/8/2020	4.3466904	filezilla.exe	LOCALMACHINE	ftp.server.net	    FTP	FTP:Request from Port 57674,'TYPE I'	{TCP:42, IPv4:41}
90	10:10:49 AM 7/8/2020	4.3729329	filezilla.exe	ftp.server.net	LOCALMACHINE	    FTP	FTP:Response to Port 57674, '200  Type set to I.'	{TCP:42, IPv4:41}
91	10:10:49 AM 7/8/2020	4.3730997	filezilla.exe	LOCALMACHINE	ftp.server.net	    FTP	FTP:Request from Port 57674, 'PASV'	{TCP:42, IPv4:41}
95	10:10:49 AM 7/8/2020	4.3958538	filezilla.exe	ftp.server.net	LOCALMACHINE	    FTP	FTP:Response to Port 57674, '227  Entering passive mode (66,191,64,178,169,125).'	{TCP:42, IPv4:41}
96	10:10:49 AM 7/8/2020	4.3961590	filezilla.exe	LOCALMACHINE	ftp.server.net	    FTP	FTP:Request from Port 57674, 'LIST'	{TCP:42, IPv4:41}
102	10:10:49 AM 7/8/2020	4.4443704	filezilla.exe	ftp.server.net	LOCALMACHINE	    FTP	FTP:Response to Port 57674, '150  Opening BINARY mode data connection.'	{TCP:42, IPv4:41}
103	10:10:49 AM 7/8/2020	4.4470091	filezilla.exe	ftp.server.net	LOCALMACHINE	    FTP	FTP:Response to Port 57674, '226 -Directory has 28,336,971,776 bytes of disk space available.'	{TCP:42, IPv4:41}
104	10:10:49 AM 7/8/2020	4.4470294	filezilla.exe	LOCALMACHINE	ftp.server.net	    TCP	TCP:Flags=...A...., SrcPort=57674, DstPort=FTP control(21), PayloadLen=0, Seq=2206362349, Ack=2418423515, Win=1021 (scale factor 0x8) = 261376	{TCP:42, IPv4:41}

hello and welcome to the forum,

i am running windows ftp server on w10.2004.64

rclone.exe ls :ftp: --ftp-host=127.0.0.1 --ftp-user=user01 --ftp-pass=tKs5J6WMkV3-vrTa03k4BqthjTpkkpt7 
        0 testfolder/testfile.txt

c:\data\rclone\scripts>c:\data\rclone\scripts\rclone.exe lsd :ftp:/testfolder --ftp-host=127.0.0.1 --ftp-user=user01 --ftp-pass=afVE7tAhQhr-kh7RvDavsofLUaYP4uxv -vv 
2020/07/08 14:04:51 DEBUG : rclone: Version "v1.52.0" starting with parameters ["c:\\data\\rclone\\scripts\\rclone.exe" "lsd" ":ftp:/testfolder" "--ftp-host=127.0.0.1" "--ftp-user=user01" "--ftp-pass=afVE7tAhQhr-kh7RvDavsofLUaYP4uxv" "-vv"]
2020/07/08 14:04:51 DEBUG : Using RCLONE_CONFIG_PASS password.
2020/07/08 14:04:51 DEBUG : Using config file from "c:\\data\\rclone\\scripts\\rclone.conf"
2020/07/08 14:04:51 DEBUG : ftp://127.0.0.1:21/testfolder: Connecting to FTP server
2020/07/08 14:04:51 DEBUG : 2 go routines active

Try using :ftp:/Folder name

Without the / it is relative to the users home directory

based on the debug output, it looks like rclone is adding the slash

the command
rclone lsd :ftp:FolderName
and the output
DEBUG : ftp://ftp.server.net:21/FolderName: Connecting to FTP server

I can confirm adding the slash does not improve the response.

Using ls, and lsd for the top ( or home if it defaults to that ) directory does not produce a listing or an error.

I am trying to make contact with the FTP server admin to find out more details of the server.

rclone ls :ftp:/FolderName --ftp-host=ftp.server.net --ftp-user=USERNAME --ftp-pass=ObscuredPassword --ftp-disable-epsv=True -vv
2020/07/08 15:21:31 DEBUG : rclone: Version "v1.52.2-208-gbfa57150-beta" starting with parameters ["rclone" "ls" ":ftp:/FolderName" "--ftp-host=ftp.server.net" "--ftp-user=USERNAME" "--ftp-pass=ObscuredPassword" "--ftp-disable-epsv=True" "-vv"]
2020/07/08 15:21:31 DEBUG : Using config file from "C:\\Users\\user\\.config\\rclone\\rclone.conf"
2020/07/08 15:21:31 DEBUG : ftp://ftp.server.net:21/FolderName: Connecting to FTP server
2020/07/08 15:21:31 ERROR : : error listing: directory not found
2020/07/08 15:21:31 DEBUG : 2 go routines active
2020/07/08 15:21:31 Failed to ls with 2 errors: last error was: directory not found

Very strange...

Maybe the server doesn't like parameters to LIST.

I'd be interested to see what you can find out about the server.

if there is some kind of test, let me know.

i am running the official windows ftp server on my local laptop.
i am just installed it today, to try and debug this windows server issue.

i would never actually put such micro$oft server on the internet.
of course, my level of paranoia would never allow that.

but i mentioned, up above, seems that rclone itself is adding the /

c:\data\rclone\scripts>c:\data\rclone\scripts\rclone-v1.52.2.exe lsd :ftp:testfolder --ftp-host=127.0.0.1 --ftp-user=user01 --ftp-pass=lT9yWUArD6gHgZnqqewiAaP8ipxFR4ua -vv 
2020/07/08 16:54:20 DEBUG : rclone: Version "v1.52.2" starting with parameters ["c:\\data\\rclone\\scripts\\rclone-v1.52.2.exe" "lsd" ":ftp:testfolder" "--ftp-host=127.0.0.1" "--ftp-user=user01" "--ftp-pass=lT9yWUArD6gHgZnqqewiAaP8ipxFR4ua" "-vv"]
2020/07/08 16:54:20 DEBUG : ftp://127.0.0.1:21/testfolder: Connecting to FTP server

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