This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
When you download a file and you click Save This Program To Disk in theFile Download dialog box, you may receive the following error message:
Error Copying File: Cannot copy file: File system error (1026)
This behavior can occur if you do not have enough disk space on the drivethat contains the Temporary Internet Files folder.
To resolve this behavior, use one of the following methods:
Delete unnecessary files on the drive containing the Temporary Internet Files folder.
Delete files in the Temporary Internet Files folder. To do so in Internet Explorer 4, click Internet Options on the View menu in Internet Explorer, click Delete Files on the General tab, and then click OK. To do so in Internet Explorer 5, click Internet Options on the Tools menu, click Delete Files on the General tab, and then click OK.
Move the Temporary Internet Files folder to a drive that has more free space. For information about how to move the Temporary Internet Files folder, see the following article in the Microsoft Knowledge Base:
172949How to Change the Location of Temporary Internet Files
This behavior is by design.
Files that you download are first stored in the Temporary Internet Filesfolder, and then moved to the destination folder.
Note that this error message can also appear if the server has problemssending the file because of security issues or network traffic. In thiscase, the file is never created in the cache because of the bad transfer.