.IDENTIFIER File

Do you have speed issues?
First check your registry for invalid entries.

The IDENTIFIER file type is primarily associated with 'Internet Explorer' by Microsoft Corporation. You won't normally see this file extension and if you do it should be attached to a filename with a colon and "zone" before it (e.g., FILENAME.DPC:ZONE.IDENTIFIER). This type of file name might be revealed by a rootkit identification program. When you use Internet Explorer to download a file that can have executable content (.DOC files, for example, can have executable macros in them) IE adds an NTFS Alternate Data Stream named ZONE.IDENTIFIER to the file. The ADS subsystem allows additional data to be linked to a file. The additional data, however, is not always apparent to the user. If you open a Command Prompt window, navigate to the folder containing the file, and command
MORE < FILENAME.DOC:ZONE.IDENTIFIER
(substitute the name of the file for FILENAME.DOC in the command) then you should see the contents of the ADS attachment which should be a couple of lines identifying the assigned Internet Zone when the file was downloaded and saved. If you trust this file you can right click it, select properties, and on the general tab click the unblock button.

Primary association: Internet Explorer

File classification: Text

Important: Invalid file associations could be the result of underlying issues within your Windows PC. It is highly recommended that you scan your PC for invalid registry entries, unused processes and other slowdown issues.

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