Did you just find a download or a file on your computer that has been digitally signed by Fileserve Ltd? If so, please read on.
You will typically see Fileserve Ltd when clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the additional details from the Fileserve Ltd digital signature with the following procedure:
Here is a screenshot of a file signed by Fileserve Ltd:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This means that the file has been published by Fileserve Ltd and that no one has tampered with the file.
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 examine the address for Fileserve Ltd, such as the street name, city and country.
UTN-USERFirst-Object has issued the Fileserve Ltd certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Fileserve Ltd files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/43 | FileServeBHO.dll |
| 0/47 | FileServeBHO.dll |
| 0/44 | FileServeBHO.dll |
The detection percentage is based on that I've collected 134 scan results for the Fileserve Ltd 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 is done on certificates with the following serial numbers: