Information and startup locations can be examined on this page: verify all your files to make sure that they are legitimate, digitally signed and from the company Compuware Corporation to which they should belong.
ft3991.sys security and file info
Sample USB Filter Driver
- DriverStudio
- Compuware Corporation
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| Filetype : driver |
A driver is used by windows to control your hardware. Each hardware component in your computer must have a driver, otherwise it cannot be used by windows
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| MD5 File security rating |
A MD5 hash is a unique fingerprint of a file.
Different files/versions can have the same filenames. The MD5 hash verifies that the legitimate file is not altered.
Runscanner (Freeware) can help you checking the file's MD5 hashes
| Ft3991.sys files in Runscanner database |
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1 different item(s) in database |
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Green items are verified safe to use |
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Unrated items are not yet checked for safety. |
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Red items are not safe (typically virusses, spyware or other malware) |
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This file is digitally signed by it's publisher.
This means that the file is from the company claiming to created it, this does not mean by default that the file is safe
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| General file info |
| Product name: |
DriverStudio
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| Description: |
Sample USB Filter Driver
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| Company: |
Compuware Corporation
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| Fix FT3991.SYS errors: Free registry scan |
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Automatic startup locations
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011 Installed drivers |
 User comments for this file
More system processes
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| Filename / Process |
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| Guid / CLSID |
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| MD5 hash |
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| Check your autostart files
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