Find out the source of the "signed file" in XP

Isolated XP does not have the source of the signature file

In Windows XP, there are many software (or drivers) that have not passed “Signature" (ie Microsoft's "Digital Signature”). Some software does not have "signature", it will not affect the normal operation of the system, but some will not work, and often cause some unknown errors. Today I will teach you how to check whether the file is "signed" or not, in order to facilitate the system to determine which program caused the problem.

Query which files are signed and do not need to use third-party software, you can use Windows XP's own verification tool & ldquo; Sigverif & rdquo;

Click “Start”→“Run”, enter “sigverif” in the dialog box that opens, click “OK" button to pop up “file signature verification” .

You can click the “Start” button to query, but doing so will make the query time longer. We can specify the scope of the query to shorten the query time. Click the “Advanced” button to bring up the “Advanced File Signature Verification Settings” dialog box. In this dialog box, click “Search for other files that have not been digitally signed”, and then scan the file type in “ In the ” select the type of file suffix you want to scan. After setting, click the “OK” button and the program will return to the interface.

Tip:

When setting in the interface, you can set the file range in the C:\\Windows\\System32\\Drivers directory, which can shorten the query time.

After returning to the interface, click the “Start” button and the program will enter the query state. Wait a moment, the system gives the results of the query.

In the query results given by the system, you will find that all signed and unsigned driver lists are in the Sigverif.txt file located in the %Windir% folder (usually Winnt or Windows). And all unsigned drivers are marked as “unsigned" (Unsigned). After you have determined which files are not signed, you can back them up to other places, and then delete the files in the original directory. Once the system prompts an exception, you can restore it back.