Hello. I have router hap ac^2, version RouterOS - 6.43.11. I want use SMB with external USB-HDD. My config on router:
/ip smb> print
enabled: yes
domain: WORKGROUP
comment: MikrotikSMB
allow-guests: yes
interfaces: all

/ip smb> shares print
Flags: X - disabled, I - inactive, * - default
# NAME DIRECTORY MAX-SESSIONS
0 * ;;; default share
pub /flash/pub 10
1 Docs /disk1/Docs 15

/ip smb> users print
Flags: * - default, X - disabled
# NAME PASSWORD READ-ONLY
0 * guest yes
1 gravis gravis no

I check this with "net use" on workstation with Win10 x64. "Net use" say me "Connect OK", but i can't open my folder. On screen i check folder "Docs" on HDD, but if i check folder Pub on router - i'm getting the same. In logs on router all fine, screen attached too.
What could be the problem? Thx.
P.S. Sorry for my bad English, i'm from Russia and my bear knows English badly

It is an issue with RouterOS v6.43.11 and v6.43.12 releases. Use any other version until a fix for the issue is available in stable branch.

Thx. I lost my settings, if i click Downgrade on System/Packages ?

No, settings should survive downgrade almost as well[*] as they survive upgrade.

[*] sometimes newer version introduces some new behaviour and upgrade magic converts old config to new one. There's no such magic for downgrade. However, usually MT warns against downgrades in such cases. Downgrade between ROS of same major.minor version (i.e. 6.43.x) don't have this limitation.