I have been using Pkzip 2.5 for my DOS application for taking backup of data.

Recently, we are getting the following error in both Windows XP & in Win 7

PKZIP: (E15) Can't open XXXXX.ZIP for write access!

The named .ZIP file is read-only or locked by another application and can
not be modified. This may also occur on a Network drive if you do not
have adequate access to that file to allow you to modify it.



I have used Unlocker.exe & attrib -s-h-r.

The zip file is created using other methods in the format ?????.zip

Any help would be appriciated.

Rakesh