Did you just download a file that has a digital signature from Quest Software Inc. and wonder if the file is safe? If that's the case, please read on.
You will typically notice Quest Software Inc. when running the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the additional details from the Quest Software Inc. digital signature with the following steps:
Here's a screenshot of a file that has been digitally signed by Quest Software Inc.:

As you can see in the screenshot above, the Windows OS states that "This digital signature is OK". This implies that the file has been published by Quest Software Inc. and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can see all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, etc. You can also see the address for Quest Software Inc., such as the street name, city and country.
Symantec Class 3 SHA256 Code Signing CA has issued the Quest Software Inc. certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the Quest Software Inc. files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/70 | KUsrInit.exe |
| 0/71 | logprovider.dll |
The detection percentage is based on that I have gathered 208 scan reports for the Quest Software Inc. files. 0 of these scan reports came up with some sort of detection. You can review the full details of the scan reports by examining the files listed above.
The analysis has been done on certificates with the following serial numbers: