1- Run command prompt as Administrator cd C:\windows\System32 2- Type the following command and hit Enter: regsvr32 jscript.dll 3- Type the following command and hit Enter: regsvr32 vbscript.dll 4- Run the installer again. Regards, MCP | MCTS | MCITP

I have read about this issue on many Vista and 7 forums. No one has since answered why the O/S suddenly won't open zip files. Simply: A user received a zip attachment in outlook with two .csv files in it. Whether she tried to open or save them from the e-mail message or open them or extract them from the saved zip file, error code "0x80004005: unknown error" gets thrown. I was able to open the same files on a Windows XP machine without any issue, so the files are not corrupted. The Windows 7 O/S is giving no other signs of an issue. I am looking for a solution other than "go get another company's product to do what 7 should natively do."

1- Run command prompt as Administrator cd C:\windows\System32 2- Type the following command and hit Enter: regsvr32 jscript.dll 3- Type the following command and hit Enter: regsvr32 vbscript.dll 4- Run the installer again. Regards, MCP | MCTS | MCITP

What installer?

Sorry ! , :) , i mean after that try to save files again. Regards, MCP | MCTS | MCITP

Hi Las, Just checked out this thread. Can you explain what was happening and why your suggested solution works? I like to understand what's behind a solution before I try it. Thanks, Don

Hi Las, Just checked out this thread. Can you explain what was happening and why your suggested solution works? I like to understand what's behind a solution before I try it. Thanks, Don Sir , regsrv32 is a utility to register a Dynamic Link Library (dll) Files into Windows. jscript.dll (Microsoft JScript Library) – Details The jscript.dll library is required for windows to operate. It is used by windows when running JScript (Micorosft’s implementation of Javascript). If jscript.dll is unavailable, Internet Explorer may crash when it encounters a web page containing Javascript code. vbscript.dll is a module that contains application programming interface (API) functions for VBScript. Regards, MCP | MCTS | MCITP

It must be zip file corruption. Make use of tool below http://www.zip.fixtoolbox.com software is able to start under all popular Windows OS