/// <summary>
/// Determine if a reboot is needed to apply updates
/// </summary>
/// <returns></returns>
internal static bool IsRebootPending()
{
Logger.FunctionEnter();
const string psFile = @".\CheckRebootState.ps1";
bool rc = false;
try
{
// next requires wu service to be running
//WUApiLib.UpdateInstaller inst = new UpdateInstaller();
//rc = inst.RebootRequiredBeforeInstallation;
if (!rc && File.Exists(psFile) && !CloudUtilities.IsCloudOS())
{
if (PS.RunPSCommand(@"-File " + psFile, out string outstr, true))
{
Logger.Debug("output string from PS: " + outstr);
rc = outstr.ToLower().Contains("true");
}
}
if (!rc)
{
Logger.Debug("Com lookup returned false, checking registry to confirm");
// check registry keys for potential pending updates
const string _rebootKey1 = @"SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\";
const string _rebootKey2 = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\";
const string _rebootValue = "RebootRequired";
const string _sessionMgrKey = @"SYSTEM\CurrentControlSet\Control\Session Manager\";
const string _pendingRenameValue = "PendingFileRenameOperations";
Logger.Debug("Checking for {0}", _sessionMgrKey);
RegistryKey baseKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Default);
RegistryKey subKey = baseKey.OpenSubKey(_sessionMgrKey);
if (subKey != null)
{
Logger.Debug("Getting Subkey {0}", _pendingRenameValue);
var value = subKey.GetValue(_pendingRenameValue);
if (value != null)
{
var stringList = new List <string>(value as string[]);
if (stringList.Count > 0)
{
Logger.Comment("Pending Reboot Detected: Pending rename registry key setting found");
rc = true;
}
}
}
// NOTE: the next may fail on domain-joined machines due to MS domain admin policies.
// this should run ok for WTT machines which is the intended target.
Logger.Debug("Checking {0}", _rebootKey1);
subKey = baseKey.OpenSubKey(_rebootKey1);
if (subKey != null)
{
string[] subKeys = subKey.GetSubKeyNames();
if (subKeys.Contains(_rebootValue))
{
Logger.Comment("Pending Reboot Detected: Pending reboot required registry key found");
rc = true;
}
}
Logger.Debug("Checking {0}", _rebootKey2);
subKey = baseKey.OpenSubKey(_rebootKey2);
if (subKey != null)
{
string[] subKeys = subKey.GetSubKeyNames();
if (subKeys.Contains(_rebootValue))
{
Logger.Comment("Pending Reboot Detected: Pending reboot required registry key found");
rc = true;
}
}
}
}
catch (Exception ex)
{
GetData.GetExceptionMessage(ex);
}
Logger.Debug("Reboot Pending Query Returning {0}", rc);
Logger.FunctionLeave();
return(rc);
}