Databases
StackOverflow2013
Postsdbo
POWiX: make symbolic link with UAC enabled
Body
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POWiX: make symbolic link with UAC enabled
    text
    copied!<p>I want to execute a custom action in a Windows Installer (with WiX script) that makes symbolic links at the end of installation. mklink requires administrator privilege, as the installer restricts. This is what I wrote:</p> <pre><code>&lt;CustomAction Id="mklink_cmdline" Property="QtExecCmdLine" Value='"[SystemFolder]cmd.exe" /c mklink "[SystemFolder]my_app.dll" "[INSTALLDIR]my_app.dll"' /&gt; &lt;CustomAction Id="mklink_exec" BinaryKey="WixCA" DllEntry="CAQuietExec" Return="ignore" /&gt; ... &lt;InstallExecuteSequence&gt; &lt;Custom Action="mklink_cmdline" Before="InstallFinalize"&gt; ... &lt;/Custom&gt; &lt;Custom Action="mklink_exec" After="mklink_cmdline"&gt; ... &lt;/Custom&gt; ... &lt;/InstallExecuteSequence&gt; </code></pre> <p>This works perfectly if UAC is completely disabled. However, when enabling UAC in any level, this custom action fails with </p> <pre><code>CAQuietExec: You do not have sufficient privilege to perform this operation. </code></pre> <p>even if I allowed in the consent window. I tried to change Execute to deferred, Impersonate to no, or change package's InstallPrivileges to elevated, none of them works.</p> <p>Any suggestion I can bypass? Thank you!</p> <p><strong>Edit</strong>: revised code with deferred custom action</p> <pre><code>&lt;CustomAction Id="mklink_cmdline" Property="mklink_exec" Value='"[SystemFolder]cmd.exe" /c mklink "[SystemFolder]my_app.dll" "[INSTALLDIR]my_app.dll"' /&gt; &lt;CustomAction Id="mklink_exec" BinaryKey="WixCA" DllEntry="CAQuietExec" Execute="deferred" Impersonate="no" Return="ignore" /&gt; ... &lt;InstallExecuteSequence&gt; &lt;Custom Action="mklink_exec" Before="InstallFinalize"&gt; ... &lt;/Custom&gt; &lt;Custom Action="mklink_cmdline" Before="mklink_exec"&gt; ... &lt;/Custom&gt; ... &lt;/InstallExecuteSequence&gt; </code></pre>
 

Querying!

 
Guidance
An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload