Why is WinZip so slow?
You might have noticed Winzip has started to run very slowly ever since you installed Windows XP Service Pack 2 or started to use Windows Vista. It’ll crawl along, taking about a second to extract each each file in an archive. What’s going on?
The explanation is on WinZip’s site. It’s to do with Windows’ Attachment Manager assigning security threat levels to files. This really isn’t acceptable though, because it will slow down your work so much.
The suggested solution is to “unblock” each file on a file for file basis, but this again is not ideal. We are not aware of a permanent solution to this issue (i.e. a way of turning off the hyper-vigilant Attachment Manager). A better solution is perhaps to turn to 7-Zip.
7-Zip is freeware which is faster than Winzip, integrates into the shell and can handle at least as many compression formats. I’m using it, and at the time of writing it seems to be the best solution for the problem with WinZip.
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