Based on the provided search results, there is no direct reference to a specific, commonly known entity, file, or software named "Soso.7z."

If you can provide more context, such as or what type of data you expect it to contain , I can provide a more specific guide. UCC Filing How-To Guides - the Texas Secretary of State

If "Soso.7z" refers to a specific document or file you are trying to open, it is likely a compressed file related to records or data downloads.

The Texas Secretary of State ( SOS ) uses .zip files for storing bulk filing records and images, requiring software like 7-Zip to open.

Install the free, open-source file archiver.