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Serv-U 15.3.1 Build 155 by SolarWinds

Serv-U 15.3.1 Build 155 by SolarWinds
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Serv-U is a powerful, easy-to-use, Windows-based multi-protocol FTP, SFTP and HTTP file server for Windows and Linux. It allows files to be shared over the Internet via unencrypted protocols like FTP and HTTP or securely via FTPS, SFTP, or HTTPS.

Using a built-in web service the software can be configured remotely from any location with Internet access and a web browser. And two built-in file transfer clients allow for file management without requiring pre-installed FTP/SFTP client software.

Serv-U is not only 100% compliant with the current FTP, SFTP and HTTP standards. It also includes numerous features unique to Serv-U that make it a perfect file sharing solution for virtually everyone. Serv-U features an open architecture that makes it very easy to extend, monitor, and change the server behavior with external DLLs.

Designed for all business types and sizes, Serv-U MFT Server software simplifies file transfer for employees from easy-to-use Web client and mobile interface. Moreover it centralizes enterprise-wide file transfer operations for IT pros to ensure better administration, visibility, and control. This means IT pros can now take file transfer control back from employees who are using non-IT-approved FTP freeware and cloud services for exchanging business files.

Serv-U supports separate listeners for IPv6 addresses, IPv6 CIDR support, IPv6 access rules, and logging. Also it supports IPv6 without losing any functionality supported with IPv4.

Feature Highlights:

Support for Multiple Protocols

  • FTP
  • SFTP (SSH)
  • HTTP/S
  • IPv4 and IPv6

Mobile File Transfer and Web Transfer

  • Secure Web browser transfers via HTTP/S (drag and drop)
  • Sync and file compare with included FTP Voyager JV module
  • Secure mobile device transfers via HTTP/S (iOS, Android, BlackBerry, etc.)
  • Rreverse proxy to prevent “data in the DMZ” with available Serv-U Gateway module

Secure File Transfer

  • Multi-factor authentication (certificates and keys)
  • Multiple authentication sources (local, Active Directory, database, custom)
  • Supports multiple keys (SSH/SFTP) for each user
  • File integrity checks (MD5, SHA1, SHA256, etc.)
  • Granular control over bandwidth, storage, permissions, and access

Ad Hoc File Transfer

  • Sender uploads files to a secure Web page on Serv-U, sets expiration date and optional password
  • Server automatically sends links to files (and optional message) to all recipients
  • Each recipient clicks a link, signs on (if required) and downloads files from a secure Web page on Serv-U

Managed File Transfer and Simple Administration

  • Web-based remote administration
  • Intuitive Web clients for drag-and-drop, thumbnails, synchronization, etc.
  • Virtual folder access local storage, remote shares, or both
  • Easy to use Management console and domain setup wizard
  • Automated file management to move/delete files after ‘x’ days
  • Share files that are already on the server
  • Make anonymous shares without specifying email ID
  • Free form search in file shares
  • Automatic account maintenance (reset password, disable after ‘x’ days)

Serv-U Corporate addresses the need for a business-class FTP server with no limitations and the ability to grow with your business.

Corporate Edition allows the following:

  • Support for remote administration
  • ODBC database support
  • Integrated SSL Support
  • Unlimited domains with an unlimited number of concurrent connections
  • Unlimited number of user accounts
  • Support for directory mapping and links
  • Support of UL/DL ratios and quotas
  • Windows User NT-SAM / Active Directory Support

Serv-U 15.3 Release Notes:

  • Update to modern UI without installing Java
  • Drag and drop support for uploads
  • Multiple file and folder upload / zip download
  • New UI for File sharing (MFT only)
  • Option to use new or legacy web client
  • Security and stability improvements

Serv-U 15.2.5 Release Notes:

  • Authenticated Serv-U account can be moved to new Collection.
  • Preload and SubDomains arguments added to HSTS headers.
  • Issue resolved with HTTP authentication on CentOS 7/8.
  • Issue with the server setting option “Allow HTTP sessions to change IP address” has been fixed.
  • The limit for the number of passive FTP ports increased to 500.
  • The user setting “Change password on next login” has been fixed.

Serv-U 15.2.4 Release Notes:

  • Autologin issue fixed
  • HTTP upload/download issue with Linux fixed

Serv-U 15.2.3 Release Notes:

  • SQLite upgraded to version 3.26
  • Support for Content Security Policy
  • Silent installation improvements
  • Licensing framework changed

Serv-U 15.2.2 Release Notes:

  • Support for the following KEX algorithms (key exchange algorithms) for SSH
    • diffie-hellman-group-exchange-sha256
    • diffie-hellman-group14-sha256
    • diffie-hellman-group16-sha512
  • OpenSSL has been updated
  • Periodic buffer flush interval during SFTP file upload setting added to Limits:To access this setting, navigate to the Limits and Settings screen for Global or Domain, and select Advanced from the Limit Type dropdown. The default is 300 seconds.
  • Performance and stability improvements
  • Security enhancements
  • Serv-U 15.2.2 is signed with new code-signing certificate

Serv-U 15.2.1 Release Notes:

  • Increased password security: existing MD5 passwords converted using more secure algorithm

    Unlike Serv-U 15.2, 15.2.1 does not prompt users to change their passwords. Nevertheless, it is recommended that you change these converted passwords when possible to further increase security.
    MD5 passwords can be automatically changed in the first 90 days; after this period they will be set to expired, and expired passwords can only be changed by an administrator.

  • Improved Management Console user interface
  • Chinese and Korean characters support in file transfer
  • Performance and stability improvements
  • Improved Internet Explorer compatibility
  • 3DES algorithm deprecations

Serv-U 15.2 Release Notes

  • Increased password security: every user needs to create a new password
  • Improved Management Console user interface
  • Chinese and Korean characters support in file transfer
  • Performance and stability improvements
  • Improved Internet Explorer compatibility
  • 3DES algorithm deprecations

Serv-U 15.1.7 Release Notes

  • Support for Explicit SSL when connected to SMTP server
  • Support for HTTP Strict Trasport Security
  • Support for Elliptic-curve Diffie-Hellman (ECDH) Key Exchange
  • Support for Secure LDAP protocol (Windows installation only)

Homepage –

Operating System and Software Requirements:

Microsoft Windows
  • 2019
  • 2016
  • 2012, 2012 R2
  • Red Hat Enterprise Linux (RHEL) v.7.2 (Recommended)
  • Fedora 24
  • Ubuntu 16.04
  • CentOS 8, 7.2
  • OpenSUSE 42.1
Database server (optional)
  • MS SQL 2014, 2014 SP1, 2014 SP2
  • MS SQL 2012, 2012 SP1, 2012 SP2, 2012 SP3
  • MS SQL 2008 R2, 2008 R2 SP1, 2008 R2 SP2, 2008 R2 SP3
  • MySQL 5.7
  • PostgreSQL: 9.5
LDAP server (optional)
  • Active Directory – same as Windows Server support
  • Open Directory 4
  • OpenLDAP 2.4
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10 Comments on Serv-U 15.3.1 Build 155 by SolarWinds

  • Gravatar


    Be warned: Updating from v 9.x to 10.x will completely hose any SSH/SFTP settings you have.

  • Gravatar


    Qui Peccavit I think you're over-stating your point just a bit. Most of the programs I download from here (98%+) work fine. It's just Serv-U and a couple other hard-to-crack programs that some people keep post non-working or old fixes for. The key is to download from long time standing members here like Waytogo and maksimog, FreeRyde, and Corona, just to name a few. As for Serv-U program, I use It's the only version of this I like before it went to Java based application. Java applications suck big time, IMO.

  • Gravatar


    Thanks for letting me know.  I too have faced the frustration here of finding most releases to be packaged with outdated cracks and then listed as working here.
    I guess that explains why a lot of my posts have been erased since I started here.          Thanks again.

  • Gravatar


    As with every release that gets posted on here, they Keygen you post is NOT FOR THIS VERSION.  The NFO clearly reads

    I can't understand why people keep doing that.   Besides, even with a working keygen, it still phones home and knows it's invalid after 30 days. 

    I really wish someone could crack this for good.  As it stands now, after the initial 30 days, you have to stop and restart the service about every 12 hours or it will phone home and deactivate itself. 

  • Gravatar


    btw, if you restart the service every 12 hours it won't phone home

  • Gravatar


    I just have the windows scheduler running a batch file that restarts the service.  It happens fast enough most clients auto-reconnect.  Like you said, you lose your statistics tho.

  • Gravatar


    General.chaos I don’t like java-based applications at all. Serv-U v6.4.0.2 is easier to set up and has a lot fewer menus then this newer version. Why Serv-u decided to go the java route is beyond me. It runs slower between menus as well. Serv-U v6.4.0.2 For The Win.

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    I'm sticking with It's the only one that has the best GUI. Ever since 7.x release the GUI sucks.

  • Gravatar


    if you are looking for an alternative ftp program you should try Cerberus. It is not as feature packed as Serv-U but it is free and does the job well.

  • Gravatar


    you use it pretty often eh?  So you don't keep it running/run it as a service?

    The issue dissappears if you keep restarting the service.  Try leaving it open for 24 hours and if you've had it installed longer than 30 days, I guarantee it won't work.

    I've been using Serv-U fulltime for months, this has been an issue for a long, long time.