Full-featured byte-level patching system for reliable software updating. Innovative and reliable software update technologies.
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Support for our products is currently on-line only (public forums and e-mail). This enables us to keep our costs (and yours) down. We provide our customers with support in foreground mode and users of evaluation versions of our products can also rely on our help during trial period. We support only the latest versions of our products. If you have any problems with old versions, please, upgrade them before contacting our technical support. It often happens that you find bugs that have been already fixed in the latest release of a product. Please, write your questions and comments only in English!

If you have a question regarding operation/usage of our products, please take a moment to review PatchFactory and DF SDK Help Systems, the most common Frequently Asked Questions (FAQs), Support Forums, Flash-based Tutorial as well as the latest edition of PatchFactory Online Help System and DF SDK Online Help System. You may find there the answer you are looking for! If there is no answer do not hesitate to contact us. We'll help you and respond to your message as soon as possible - usually within 24 to 48 hours or two business days.
Your feedback is important for us in order to get ideas, comments and suggestions of how to make our products and services better for you. Many features and portions of the interface continue to be influenced by comments from users. So if you have a grand idea for a new feature, or a better way of doing something, please drop us a note. Everything that suits our clients - suits us!

When asking for support please inform us of the following:
  PatchFactory or DF SDK version installed
  Full OS version installed (including Service Pack installed and Localization)
  Detailed description of your problem (with a screenshot if possible)
  Your registration information (if you are a registered user)

If you write a bug report and if the problem is reproducible, please list the steps required to cause it. If it is not reproducible (only happened once, or occasionally for no apparent reason), please describe the circumstances in which it occurred and the symptoms observed, leaving a blank line between steps (example: "1. Create a new patch. 2. Specify some information ...") .
If the problem causes any error messages to appear, please include error messages into your bug report.

Support Team
You can use our online email-form to contact us (guarantees that your email will reach our Support Team). Just fill all necessary fields and click on "Send Email" button. Do not forget to select the correct Question Category for your message and write the detailed description of your problem - it can significantly shorten the respond time.

Send an e-mail to our technicians if you want to ask for customer's technical support service or report a bug.


Contact our sales assistance if you do not get your registration key in a timely manner or if you lost it. Please include your order information (you can copy it from a registration letter you received from us). We will be happy to help you.


Send an e-mail to this address for general information and feedback, any suggestions and comments will be welcomed!


Contact webmaster if you are interested in exchanging links with us or in placing advertisement in our web pages.

Please, kindly give us your feedback and tell us the following:
  What tasks do you accomplish using PatchFactory or DF SDK?
  What do you think key benefits of PatchFactory or DF SDK for your business are?
  Which product features are most useful for you?
  What was the main reason for choosing (and buying) PatchFactory or DF SDK?
  Where did you first hear about Patch Factory or DF SDK?
  Did you find our public site navigation easy to use or not?

We would really appreciate your comments, remarks, reports or suggestions.
This will help us to improve PatchFactory and DF SDK in future to be closer to our users needs.

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News&Events
EXCLUSIVE SAVINGS!
Competitive Upgrade.
Buy now and save up to 50% of your total purchase for migration to PatchFactory or DF SDK.
» Read more...

May 15th, 2008
PatchFactory v3.3.4 update is available.
» Details...

January 29th, 2007
PatchFactory v3.3.3 update is available for free download.
» Details...

December 25th, 2006
DF SDK v1.0.2.2 released.
Improved performance for diff applying engine.
» Download Free Demo...
» Details...

December 11th, 2006
DF SDK v1.0.2.1 released.
Improved performance for diff building engine.
» Download Free Demo...
» Details...

October 19th, 2006
DF SDK v1.0.2 released.
» Download Free Demo...
» Details...

October 10th, 2006
DF SDK v1.0.1 released. Software Development Kit which provides integrating of effective patching / differencing for files of any type and size into your application(s).
» Download Free Demo...
» Details...

Article: Creating Updates and Patches
"Certification Magazine" has published an article devoted to the main aspects of the software updating problem arisen during standard software development cycle.
» Details...
» Read article...

October 24th, 2005
new! PatchFactory v3 Flash-based Tutorial is available.
» View flash-tutorial...

October 4th, 2005
PatchFactory v3.3
released. New language modules for patch installation and improved performance of patch building engine!
» Download Evaluation...
» Details...

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