✎ [V8] FAQ: Troubleshooting backup problem with inaccessible network drive [Ahsay Wiki]

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===== [V8] FAQ: Troubleshooting backup problem with inaccessible network drive  =====

<html>
 <b>
  Article ID</b>: 8065
 <br>
 <b>
  Reviewed</b>: 2019-09-26
 <br>
 <br>
 <b>
  Product Version</b>: 
 <br>
 AhsayACB / AhsayOBM: 8.1 to 8.x
 <br>
 OS: Windows
</html>


===== Description =====
<html>
When performing backup for a mapped network drive, the following warning message is displayed:
<br>

 <table border="0" cellpadding="0" cellspacing="0" width="850">
  <tr>
   <td bgcolor="#E8E8E8" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-TOP: #C0C0C0  1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
    No.
   </td>
   <td bgcolor="#E8E8E8" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-TOP: #C0C0C0  1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
    Type
   </td>
   <td bgcolor="#E8E8E8" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-TOP: #C0C0C0  1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
    Timestamp
   </td>
   <td bgcolor="#E8E8E8" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-TOP: #C0C0C0 1px solid; BORDER-RIGHT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
    Log
   </td>
  </tr>
  <tr>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    *
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    ...
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    ...
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-RIGHT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
    ...
   </td>
  </tr>
  <tr>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    *
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
     <font color=#0040FF>warn</font>
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
     <font color=#0040FF>YYYY/MM/DD
     hh:mm:ss</font>
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-RIGHT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
   <font color=#0040FF>Backup source "\\server\share" does not exist !</font>
   </td>
  </tr>  
  <tr>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    *
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
     <font color=#0040FF>warn</font>
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
     <font color=#0040FF>YYYY/MM/DD
     hh:mm:ss</font>
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-RIGHT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
   <font color=#0040FF>Skip backing up "\\server\share\file" (network drive is not accessible)</font>
   </td>
  </tr>
  <tr>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    *
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    ...
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="top">
    ...
   </td>
   <td bgcolor="#ffffff" style="BORDER-LEFT: #C0C0C0 1px solid; BORDER-RIGHT: #C0C0C0 1px solid; BORDER-BOTTOM: #C0C0C0 1px solid" valign="middle">
    ...
   </td>
  </tr>
 </table>


The message suggests that the corresponding network drive cannot be accessed by the backup process. &nbsp; Please refer to the following guideline on how to troubleshoot the warning.
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===== Steps =====
<html>
The following are some steps to follow for troubleshooting errors related to Volume Shadow Copy (these steps may vary depending on the operating system):
 <br>
 <ul>
 
  
  <li><font color=black>
   <u>
   Network drive accessibility 
   </u>
   <br>
   Have you tried accessing the mapped drive recently?
   <br>
   <br>
   Try to access the mapped drive and then add / delete a file in the drive to confirm if the mapped drive is in fact accessible.
   <br>
   <br>
   <img style="width:60%; border:thin solid black" src="http://wiki.ahsay.com/lib/exe/fetch.php?media=public:8065_1.png"/><br><br>

  </font></li>
  <br>
  
  
  <li><font color=black>
   <u>
   File sharing permission 
   </u>
   <br>
   Did you change the file sharing permission setting recently?
   <br>
   <br>
   <ul>
    <li><font color=black>Right click on the corresponding shared folder.</font></li><br>
    
    
    <li><font color=black>Click on the <b>Share...</b> button.<br><br>
    
    <img style="width:25%; border:thin solid black" src="http://wiki.ahsay.com/lib/exe/fetch.php?media=public:8065_3.png"/><br><br>
    </font></li>
    
    <li><font color=black>Check if the file sharing permission setting is correct.<br><br>
    
    <img style="width:40%; border:thin solid black" src="http://wiki.ahsay.com/lib/exe/fetch.php?media=public:8065_4.png"/><br><br>
    </font></li>
   </ul> 
   <br>
  </font></li>

    
  
  <li><font color=black>
   <u>
   User Account Control (UAC) setting
   </u>
   <br>
   Is the <b>User Account Control: Behaviour of the elevation prompt for administrators in Admin Approval Mode policy</b> setting is configured to <b>Prompt for credentials</b>?<br><br>
   
  
   <ul>
    <li><font color=black>Open the Local Group Policy Editor (gpedit.msc).</font></li><br>
    
    
    <li><font color=black>Check under Computer Configure > Windows Settings > Security Settings > Local Policies > Security Option:<br><br>
    
    <img style="width:65%; border:thin solid black" src="http://wiki.ahsay.com/lib/exe/fetch.php?media=public:8065_5.png"/><br><br>
    </font></li>
    
    <li><font color=black>If the setting is configured to <b>Prompt for credentials</b>, refer to the following article from Microsoft for workaround:<br><br>
    
    <a href="https://support.microsoft.com/en-hk/help/3035277/mapped-drives-are-not-available-from-an-elevated-prompt-when-uac-is-co">https://support.microsoft.com/en-hk/help/3035277/mapped-drives-are-not-available-from-an-elevated-prompt-when-uac-is-co</a><br><br>
    </font></li><br>
   </ul> 

   
  </font></li>

    
  
  
  
  <li><font color=black>
   <u>
    Re-map the network drive
   </u>
   <br>
   Ensure that the network drive was correctly mapped, try re-mapping the network drive:
   <br>
   <br>
   <ul>
    <li><font color=black>
     Right click on the command prompt icon, select <b>Run as administrator</b>.
   <br>
   <br>
   <img style="width:70%; border:thin solid black" src="http://wiki.ahsay.com/lib/exe/fetch.php?media=public:8065_2.png"/><br><br>
    </font></li>
    
    <li><font color=black>
     Enter the following command:
     <br><br>
        
    <table border="0" cellpadding="0" cellspacing="0" width="600">
    <tr>
     <td style="BACKGROUND-COLOR: black">
      <font size=2 color=white> >net use e: \\server\share_name /user:username password</font>
     </td>
    </tr>
   </table> 

    <a href="https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/gg651155(v%3Dws.11)">Click Here</a> for syntax of the net use command.
   <br>
   <br>
   <br>
    </font></li>      
   </ul>


</ul>
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===== Keywords =====
network, drive, map, mapped, share, shared, accessible, inaccessible
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