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Q: Some of the email attachments download but won't open or run. A message comes up "Windows cannot access the specified device path or file. You may not have the appropriate permission to access the item." Am using XP Pro and have PPP and Adobe Acrobat installed. I have tried to download Google Chrome with same result.
A: This error is because you may not have the appropriate program on your computer to open the type of attachment that was sent to you.
To find out what program is needed you must look at the file extension which are the last three characters of the filename after the dot. In order to see that extension type in Windows Explorer, you must click on Tools, Folder options and remove the tick from “Hide extensions for known file types”. Then you must associate a program with this file extension.
If you still do not know what program is needed, and this requires knowledge and experience, then look at: http://filext.com to identify the correct program and then open the attachment using the appropriate program. If you do not have the required program installed you should ask your sender to use another format, if possible.
The association is done from Windows and the wording on the dialogues boxes will vary a bit depending on version of Windows.
Q: Whilst trawling through my files yesterday to find the Firefox bookmarks, I came across my Windows XP directory and found that there were a huge number of files $NTUNINSTALL...followed by a series of different numbers. I know these represent Windows automatic updates but are they worth keeping? Some go back over 4 years! I assume that other readers of your excellent column have the same query.
A: Quite a number of readers have asked this question. According to advice from a senior Microsoft developer these files should not be deleted. However, I asked that question shortly after XP was released and the underlying principle is the same even now. These uninstall files relate to security and other patches that have been automatically installed onto your computer and will be required in case you wish to roll back to some earlier point.
To perform this action open Windows Explorer and right-click on drive C, Properties, Disk Cleanup then click on the More Options tab and select System Restore and Cleanup. Answer Yes and click OK.
Banking on Wireless security
Could you please tell me the best security for a laptop connected by wireless to the Internet? I do all our banking and paying bills on the computers.
There are a number of steps that you can do in order to make your network quite secure. These are:
Although no wireless network can be considered to be 100% secure, I feel that if you have enabled all of the above steps you are quite safe doing banking on the Internet.