✎ [V7] ISSUE: Failed to open driver: Error = System error 577 has occurred. Windows cannot verify the digital signature for this file (issue when performing a Hyper-V Run Direct restore) [Ahsay Wiki]

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=====[V7]  ISSUE: Failed to open driver: Error = System error 577 has occurred. Windows cannot verify the digital signature for this file (issue when performing a Hyper-V Run Direct restore)  =====

<html>
 <b>
  Article ID:
 </b>
 5227
 <br/>
 <b>
  Reviewed:
 </b>
 2017-01-11
 <br/>
 <br/>
 <b>
  Product Version:
 </b>
 <br/>
 AhsayOBM: 7.9.0.0 to 7.x
 <br/>
 OS: Windows Only
</html>



<html>
<FONT COLOR=red SIZE=+1>
<B>ATTENTION</B>
1st January, 2022: v7 officially End-of-Life [<A HREF=https://wiki.ahsay.com/doku.php?id=public:announcement:ahsay_v7_eol>details</A>]
</FONT>
</html>

===== Problem Description =====
<html>
When performing a Hyper-V VM Run Direct restore, the following error is displayed on AhsayOBM client interface:
<br>
<br>
<i>
Failed to open driver: Error = System error 577 has occurred. Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source.”
</i>
 <br/>
    <img style="width:75%; border:thin solid black" src="http://wiki.ahsay.com/lib/exe/fetch.php?media=public:5227_issue:when_attemtping_a_hyper-v_run_direct_restore_with_failed_to_open_driver:5227_1.png"/>
 <br/>
 Note:
<br>
This issue will not occur when performing non-Run Direct restore for the affected Hyper-V backup set.
</html>


===== Cause =====
This issue can occur if the driver file FSRedirector.sys (found in the AhsayOBM installation folder) for Run Direct restoration was not sign with a digital signature during the Ahsay customization and branding process.


===== Resolution =====
<html>
To resolve the issue, digitally sign the AhsayOBM installer.
 <br/>
 <ol>
  <li>
   <font color=black>Login to AhsayCBS web console.</font>
  </li>
  <br>
  <li>
   <font color=black>Select <b>System Settings</b>, <b>Basic</b>, <b>Administrative Access</b>, <b>system</b>, <b>Rebranded Clients</b>, then <b>Digital Signature</b>. Enable the <b>Digital Signature</b> feature</font>
   <br/>
      <img style="width:75%; border:thin solid black" src="http://wiki.ahsay.com/lib/exe/fetch.php?media=public:5227_issue:when_attemtping_a_hyper-v_run_direct_restore_with_failed_to_open_driver:5227_cert.png"/>
   <br/>
  </li>
  <br>
  <li>
   <font color=black>Under <b>Digital certificate used to sign all EXE/JAR files</b>, select:
   <br>
   <br>
   <b>Use Ahsay Systems Corporation Certificate</b> if you do not have a digital certificate 
   <br>
   <br>
   or 
   <br>
   <br>
   <b>Use certificate in mycredentials.spc/mycert.pfx uploaded</b> if you have your own digital certificate</font>
  </li>
  <br>
  <li>
   <font color=black>Save, and build the client installer again afterward.</font>
  </li>
  <br>
  <li>
   <font color=black>After the build is completed, download and re-install the digitally signed AhsayOBM installer on the Hyper-V server.</font>
   <br>
   <br><font color=black>Note: 
   <br>To verify the Digital Signature on the new AhsayOBM installation. On the Hyper-V server:</font>
 <br/>
 <br/>
 <ul>
  <li>
   <font color=black>Browse to the AhsayOBM installation bin folder at ${OBM_Install_Home}\bin</font>
  </li>
  <br>
  <li>
   <font color=black>Right click on the FSRedirector.sys file, then select <b>Properties</b>.</font>
  </li>
  <br>
  <li>
   <font color=black>Select the <b>Digital Signatures</b> tab to verify the digital signature is present.</font>
   <br>
      <img style="width:45%; border:thin solid black" src="http://wiki.ahsay.com/lib/exe/fetch.php?media=public:5227_issue:when_attemtping_a_hyper-v_run_direct_restore_with_failed_to_open_driver:5227_cert2.png"/>
  </li>
 </ul>
  </li>
 </ol>

</html>


===== Keywords =====
hyperv, hyper-v, Run Direct, restore, digital signature, branding, customization, System error 577, Digital Certificate
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