Technical Support for 7-Zip

Before requesting customer support for 7-Zip, please

Check that you use latest version of 7-Zip.
If you want to report about some problem, check also latest development version of 7-Zip. It can be beta or alpha version. Maybe your problem is already fixed in some new version.
If you have 64-bit Windows x64, check that you use 7-Zip x64.
Check out the 7-Zip help system also.
Read FAQ.
Search on 7-Zip forum for similar requests.

Search on 7-Zip forum:

Please use 7-Zip forum for all common questions; you can get answers on the forum from 7-Zip developers and from other 7-Zip users.

Please write only in English.

7-Zip's Forum at SourceForge

If you post a message to forum about some problem with 7-Zip, please provide the following information about your system:

7-Zip version and type (32-bit / 64-bit)
Windows version and type (32-bit / 64-bit)

If you know about some bug in 7-Zip code, you can create new ticket in BUGs section:

7-Zip's BUGs tickets at SourceForge

Please mark the ticket as "Mark as Private", if you want to report about some possible vulnerability in 7-Zip.

If you want to send message to developer of 7-Zip, you can do it via SourceForge "Send Message" service, or create support ticket with "Mark as Private" flag:

7-Zip's Support Requests tickets at SourceForge