Hi Dan, Seems like 2 possible options spring to mind. 1) System Restore to a date prior to the problem. 2) Re-install XP over itself. George. From: guispeak@xxxxxxxxxxxxx [mailto:guispeak@xxxxxxxxxxxxx] On Behalf Of Dan Kerstetter Sent: 22 June 2007 21:21 To: guispeak@xxxxxxxxxxxxx Subject: [guispeak] File Decompression Problem in XP Hi all. I'm using XP Service Pack 2 Home edition. Just within the past week or so, I have not been able to unzip any file folders. If I use the utility that comes with XP, I get the usual vague error message from Microsoft. If I use 7Zip, I get a diagnostic message saying that I have CRC failures and the file is broken. I haven't installed anything new lately or made any changes to my system. I also, in hopes of solving the problem, ran deep maintenance today on my system with the same results. I would appreciate anything anyone could tell me about how to correct this problem. Thanks in advance. Dan No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.472 / Virus Database: 269.9.4/860 - Release Date: 21/06/2007 17:53 No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.472 / Virus Database: 269.9.4/860 - Release Date: 21/06/2007 17:53