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About Portable Update

Portable Update is a windows-based tool to update a Microsoft® Windows® machine in an isolated environment.

This is useful in many circumstances:

  • Portable Update History tag
  • When a computer resides on a secure LAN isolated from the Internet;
  • When the computer that needs to be updated does not have access or cannot use a proxy server;
  • When is necessary to update a freshly-installed computer with the latest updates prior to connect it to a network;
  • When the computer does not have network interface at all;
  • When the network connection is too slow or it is necessary to update the computer fairly quickly;
  • In all the other cases when is mandatory to have the complete control on the updating process without connecting the computer to a network.

How does it work?

To update an isolated computer, Portable Update uses an external cache to store updates.

  • The cache can reside on any USB external drive, or via private LAN network, or even on a shared path. Once an update is copied to the cache (the only time that an internet connection is required), the same update will be used for all computers that need that very update.
  • You will never need to download the same update again to update multiple machines (or for updating the same machine more than once!).
  • Once the update is stored in the cache folder, the program will use standard Windows Update API services to update your computer.
  • Different updates from different operating systems can reside on the same cache folder because they are uniquely identified.
  • As a result, you can see the log update in the standard update history log exactly as it was done from the normal Windows Update site!
  • For any other technical information, please read the documentation page

Tested with:

  • Microsoft® Windows® 10 (up to Build 1903);
  • Microsoft® Windows® 8.1;
  • Microsoft® Windows® Server 2012 R2;
  • Microsoft® Windows® Server 2012;
  • Microsoft® Windows® 8;
  • Microsoft® Windows® 7;
  • Microsoft® Windows® Server 2008 R2;
  • Microsoft® Windows® Server 2008;
  • Microsoft® Windows® Embedded POSReady 2009;
  • Microsoft® Windows® Xp starting from Sp3;
  • Microsoft® Windows® Vista;
  • Microsoft® Windows® Server 2003;
  • Microsoft® Windows® 2000 starting from SP4;

Microsoft® and Windows® are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.

No spyware, no adware, no viruses:

Payload Security




PortUp.exe Release 2.5.1, 214,469 bytes


SHA256: 0c4c266b093656fafd3a9422a4a9c81ace3e3931ef96b1863da2b35f9e4e76ec


SHA1: 7d123063873fcb7d7cb40e20259c693516663d46


MD5: e73159add5c236fc2e1e78ec95b46d65



If you like this software, consider to donate a small amount via PayPal, contributing to finance this web space. This is purely voluntary.
If you like to know a little more about its developer, Harry Lime, please take some time to read his about page.
Thank you very much in advance!

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Non-commercial use:

This software can be freely used for personal use, all non-profit organizations, including 501© nonprofit charitable NGOs and the public school system.

In all commercial contexts, private and independent schools, PortUp is licensed on a physical/virtual updated machine basis for one year. For license details please contact: commercial@portableupdate.com.

PortUp is currently used by these non‑profit organizations:


PortUp is currently used by these commercial company:

NGOs   Commercial organizations