diff --git a/ext/installfiles/windows/ZeroTier One.aip b/ext/installfiles/windows/ZeroTier One.aip
index ba7873e24..e80494020 100644
--- a/ext/installfiles/windows/ZeroTier One.aip	
+++ b/ext/installfiles/windows/ZeroTier One.aip	
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<DOCUMENT Type="Advanced Installer" CreateVersion="10.9" version="18.0" Modules="enterprise" RootPath="." Language="en" Id="{DC564647-6BF0-4550-87F4-89C938D0159C}">
+<DOCUMENT Type="Advanced Installer" CreateVersion="10.9" version="18.7" Modules="enterprise" RootPath="." Language="en" Id="{DC564647-6BF0-4550-87F4-89C938D0159C}">
   <COMPONENT cid="caphyon.advinst.msicomp.MsiPropsComponent">
     <ROW Property="AI_BITMAP_DISPLAY_MODE" Value="0"/>
+    <ROW Property="AI_CURRENT_YEAR" Value="2021" ValueLocId="-"/>
     <ROW Property="AI_EMBD_MSI_EXTR_PATH" Value="[TempFolder]" ValueLocId="-"/>
     <ROW Property="AI_EXTERNALUIUNINSTALLERNAME" MultiBuildValue="DefaultBuild:aiui"/>
     <ROW Property="AI_FINDEXE_TITLE" Value="Select the installation package for [|ProductName]" ValueLocId="AI.Property.FindExeTitle"/>
@@ -17,6 +18,7 @@
     <ROW Property="ARPHELPTELEPHONE" Value="949-505-9993"/>
     <ROW Property="ARPNOMODIFY" MultiBuildValue="DefaultBuild:1"/>
     <ROW Property="ARPNOREPAIR" Value="1" MultiBuildValue="ExeBuild:1"/>
+    <ROW Property="ARPPRODUCTICON" Value="ZeroTierIcon.exe" Type="8"/>
     <ROW Property="ARPSYSTEMCOMPONENT" Value="1"/>
     <ROW Property="ARPURLINFOABOUT" Value="https://www.zerotier.com/"/>
     <ROW Property="ARPURLUPDATEINFO" Value="https://www.zerotier.com/"/>
@@ -25,10 +27,10 @@
     <ROW Property="LIMITUI" MultiBuildValue="DefaultBuild:1"/>
     <ROW Property="MSIFASTINSTALL" MultiBuildValue="DefaultBuild:2"/>
     <ROW Property="Manufacturer" Value="ZeroTier, Inc."/>
-    <ROW Property="ProductCode" Value="1033:{EB928ABB-D74D-44AC-96BE-DABCBEAE9EB3} " Type="16"/>
+    <ROW Property="ProductCode" Value="1033:{931ECFD4-EC5B-4247-AAFD-EE0B6272B4CA} " Type="16"/>
     <ROW Property="ProductLanguage" Value="1033"/>
     <ROW Property="ProductName" Value="ZeroTier One"/>
-    <ROW Property="ProductVersion" Value="1.6.5" Type="32"/>
+    <ROW Property="ProductVersion" Value="1.6.6" Type="32"/>
     <ROW Property="REBOOT" MultiBuildValue="DefaultBuild:ReallySuppress"/>
     <ROW Property="RUNAPPLICATION" Value="1" Type="4"/>
     <ROW Property="SecureCustomProperties" Value="OLDPRODUCTS;AI_NEWERPRODUCTFOUND;AI_SETUPEXEPATH;SETUPEXEDIR"/>
@@ -61,7 +63,7 @@
     <ROW Directory="x86_pre_win10_Dir" Directory_Parent="x86_Dir" DefaultDir=".:X86_PR~1|x86_pre_win10"/>
   </COMPONENT>
   <COMPONENT cid="caphyon.advinst.msicomp.MsiCompsComponent">
-    <ROW Component="AI_CustomARPName" ComponentId="{3E28390A-EFBD-4C66-AC5B-0E8CC0503370}" Directory_="APPDIR" Attributes="4" KeyPath="DisplayName" Options="1"/>
+    <ROW Component="AI_CustomARPName" ComponentId="{8D13FF2C-48CB-4B8A-899D-DDFFA5D72905}" Directory_="APPDIR" Attributes="4" KeyPath="DisplayName" Options="1"/>
     <ROW Component="AI_DisableModify" ComponentId="{46FFA8C5-A0CB-4E05-9AD3-911D543DE8CA}" Directory_="APPDIR" Attributes="4" KeyPath="NoModify" Options="1"/>
     <ROW Component="AI_ExePath" ComponentId="{8E02B36C-7A19-429B-A93E-77A9261AC918}" Directory_="APPDIR" Attributes="4" KeyPath="AI_ExePath"/>
     <ROW Component="APPDIR" ComponentId="{4DD7907D-D7FE-4CD6-B1A0-B5C1625F5133}" Directory_="APPDIR" Attributes="0"/>
@@ -125,8 +127,8 @@
     <ROW Action="AI_DetectSoftware" Sequence="101"/>
   </COMPONENT>
   <COMPONENT cid="caphyon.advinst.msicomp.BuildComponent">
-    <ROW BuildKey="DefaultBuild" BuildName="MSI" BuildOrder="1" BuildType="1" PackageFolder="..\..\.." PackageFileName="ZeroTier One" Languages="en" InstallationType="4" ExtUI="true" UseLargeSchema="true"/>
-    <ROW BuildKey="ExeBuild" BuildName="update" BuildOrder="2" BuildType="1" PackageFolder="..\..\.." PackageFileName="ZeroTier One" Languages="en" InstallationType="2" CabsLocation="1" CompressCabs="false" UseLzma="true" LzmaMethod="2" LzmaCompressionLevel="4" PackageType="1" FilesInsideExe="true" ExeIconPath="..\..\..\artwork\ZeroTierIcon.ico" ExtractionFolder="[AppDataFolder][|Manufacturer]\[|ProductName] [|ProductVersion]\install" MsiCmdLine="/qn" ExtUI="true" UseLargeSchema="true" ExeName="zt1_update_2_1,2_[|ProductVersion]_0"/>
+    <ROW BuildKey="DefaultBuild" BuildName="MSI" BuildOrder="1" BuildType="0" PackageFolder="..\..\.." PackageFileName="ZeroTier One" Languages="en" InstallationType="4" ExtUI="true" UseLargeSchema="true"/>
+    <ROW BuildKey="ExeBuild" BuildName="update" BuildOrder="2" BuildType="0" PackageFolder="..\..\.." PackageFileName="ZeroTier One" Languages="en" InstallationType="2" CabsLocation="1" CompressCabs="false" UseLzma="true" LzmaMethod="2" LzmaCompressionLevel="4" PackageType="1" FilesInsideExe="true" ExeIconPath="..\..\..\artwork\ZeroTierIcon.ico" ExtractionFolder="[AppDataFolder][|Manufacturer]\[|ProductName] [|ProductVersion]\install" MsiCmdLine="/qn" ExtUI="true" UseLargeSchema="true" ExeName="zt1_update_2_1,2_[|ProductVersion]_0"/>
   </COMPONENT>
   <COMPONENT cid="caphyon.advinst.msicomp.CacheComponent">
     <ATTRIBUTE name="Enable" value="false"/>
@@ -172,6 +174,7 @@
   <COMPONENT cid="caphyon.advinst.msicomp.MsiActionTextComponent">
     <ROW Action="AI_AiBackupImmediate" Description="Preparing backup operation" DescriptionLocId="ActionText.Description.AI_AiBackupImmediate" Template="Path: [1]" TemplateLocId="ActionText.Template.AI_AiBackupImmediate"/>
     <ROW Action="AI_AiBackupRollback" Description="Rollback backup" DescriptionLocId="ActionText.Description.AI_AiBackupRollback" Template="Path: [1]" TemplateLocId="ActionText.Template.AI_AiBackupRollback"/>
+    <ROW Action="AI_AiBackupRollbackImpersonate" Description="Rollback backup" DescriptionLocId="ActionText.Description.AI_AiBackupRollback" Template="Path: [1]" TemplateLocId="ActionText.Template.AI_AiBackupRollback"/>
     <ROW Action="AI_AiRestoreDeferred" Description="Executing restore operation" DescriptionLocId="ActionText.Description.AI_AiRestoreDeferred" Template="Path: [1]" TemplateLocId="ActionText.Template.AI_AiRestoreDeferred"/>
     <ROW Action="AI_AiRestoreDeferredImpersonate" Description="Executing restore operation" DescriptionLocId="ActionText.Description.AI_AiRestoreDeferred" Template="Path: [1]" TemplateLocId="ActionText.Template.AI_AiRestoreDeferred"/>
     <ROW Action="AI_AiRestoreRollback" Description="Rollback restore" DescriptionLocId="ActionText.Description.AI_AiRestoreRollback" Template="Path: [1]" TemplateLocId="ActionText.Template.AI_AiRestoreRollback"/>
@@ -255,6 +258,7 @@
     <ROW Action="AI_AiBackupCleanup" Type="1" Source="ResourceCleaner.dll" Target="OnAiBackupCleanup" WithoutSeq="true"/>
     <ROW Action="AI_AiBackupImmediate" Type="1" Source="ResourceCleaner.dll" Target="OnAiBackupImmediate"/>
     <ROW Action="AI_AiBackupRollback" Type="11521" Source="ResourceCleaner.dll" Target="OnAiBackupRollback"/>
+    <ROW Action="AI_AiBackupRollbackImpersonate" Type="9473" Source="ResourceCleaner.dll" Target="OnAiBackupRollbackImpersonate"/>
     <ROW Action="AI_AiRestoreDeferred" Type="11265" Source="ResourceCleaner.dll" Target="OnAiRestoreDeferred"/>
     <ROW Action="AI_AiRestoreDeferredImpersonate" Type="9217" Source="ResourceCleaner.dll" Target="OnAiRestoreDeferredImpersonate"/>
     <ROW Action="AI_AiRestoreRollback" Type="11521" Source="ResourceCleaner.dll" Target="OnAiRestoreRollback" WithoutSeq="true"/>
@@ -352,7 +356,7 @@
   <COMPONENT cid="caphyon.advinst.msicomp.MsiInstExSeqComponent">
     <ROW Action="AI_DOWNGRADE" Condition="AI_NEWERPRODUCTFOUND AND (UILevel &lt;&gt; 5)" Sequence="210"/>
     <ROW Action="AI_RESTORE_LOCATION" Condition="APPDIR=&quot;&quot;" Sequence="749"/>
-    <ROW Action="AI_STORE_LOCATION" Condition="(Not Installed) OR REINSTALL" Sequence="1503"/>
+    <ROW Action="AI_STORE_LOCATION" Condition="(Not Installed) OR REINSTALL" Sequence="1504"/>
     <ROW Action="AI_PREPARE_UPGRADE" Condition="AI_UPGRADE=&quot;No&quot; AND (Not Installed)" Sequence="1397"/>
     <ROW Action="AI_ResolveKnownFolders" Sequence="52"/>
     <ROW Action="AI_XmlInstall" Condition="(REMOVE &lt;&gt; &quot;ALL&quot;)" Sequence="5103"/>
@@ -360,7 +364,7 @@
     <ROW Action="AI_XmlUninstall" Condition="(REMOVE)" Sequence="3102"/>
     <ROW Action="AI_DATA_SETTER_1" Condition="(REMOVE)" Sequence="3101"/>
     <ROW Action="InstallFinalize" Sequence="6600" SeqType="0" MsiKey="InstallFinalize"/>
-    <ROW Action="AI_RemoveExternalUIStub" Condition="(REMOVE=&quot;ALL&quot;) AND ((VersionNT &gt; 500) OR((VersionNT = 500) AND (ServicePackLevel &gt;= 4)))" Sequence="1502"/>
+    <ROW Action="AI_RemoveExternalUIStub" Condition="(REMOVE=&quot;ALL&quot;) AND ((VersionNT &gt; 500) OR((VersionNT = 500) AND (ServicePackLevel &gt;= 4)))" Sequence="1503"/>
     <ROW Action="TapDeviceRemove32" Condition="( Installed AND ( REMOVE = &quot;ALL&quot; OR AI_INSTALL_MODE = &quot;Remove&quot; ) AND NOT UPGRADINGPRODUCTCODE ) AND ( NOT VersionNT64 )" Sequence="1603"/>
     <ROW Action="TapDeviceRemove64" Condition="( Installed AND ( REMOVE = &quot;ALL&quot; OR AI_INSTALL_MODE = &quot;Remove&quot; ) AND NOT UPGRADINGPRODUCTCODE ) AND ( VersionNT64 )" Sequence="1604"/>
     <ROW Action="AI_FwInstall" Condition="(VersionNT &gt;= 501) AND (REMOVE &lt;&gt; &quot;ALL&quot;)" Sequence="5802"/>
@@ -381,7 +385,7 @@
     <ROW Action="TerminateUI" Sequence="1602"/>
     <ROW Action="AI_DATA_SETTER_6" Sequence="1601"/>
     <ROW Action="AI_AiBackupImmediate" Sequence="1402"/>
-    <ROW Action="AI_AiBackupRollback" Sequence="1501"/>
+    <ROW Action="AI_AiBackupRollback" Sequence="1502"/>
     <ROW Action="AI_AiRestoreDeferred" Sequence="6595"/>
     <ROW Action="AI_EnableDebugLog" Sequence="51"/>
     <ROW Action="AI_AiRestoreDeferredImpersonate" Sequence="6596"/>
@@ -390,6 +394,7 @@
     <ROW Action="AI_ExtractFiles" Sequence="1399" Builds="ExeBuild"/>
     <ROW Action="AI_DATA_SETTER_4" Sequence="1398"/>
     <ROW Action="AI_GetArpIconPath" Sequence="1401"/>
+    <ROW Action="AI_AiBackupRollbackImpersonate" Sequence="1501"/>
   </COMPONENT>
   <COMPONENT cid="caphyon.advinst.msicomp.MsiInstallUISequenceComponent">
     <ROW Action="AI_RESTORE_LOCATION" Condition="APPDIR=&quot;&quot;" Sequence="749"/>
@@ -483,7 +488,7 @@
     <ROW XmlAttribute="xsischemaLocation" XmlElement="swidsoftware_identification_tag" Name="xsi:schemaLocation" Flags="14" Order="3" Value="http://standards.iso.org/iso/19770/-2/2008/schema.xsd software_identification_tag.xsd"/>
   </COMPONENT>
   <COMPONENT cid="caphyon.advinst.msicomp.XmlElementComponent">
-    <ROW XmlElement="swidbuild" ParentElement="swidnumeric" Name="swid:build" Condition="1" Order="2" Flags="14" Text="5" UpdateIndexInParent="0"/>
+    <ROW XmlElement="swidbuild" ParentElement="swidnumeric" Name="swid:build" Condition="1" Order="2" Flags="14" Text="6" UpdateIndexInParent="0"/>
     <ROW XmlElement="swidentitlement_required_indicator" ParentElement="swidsoftware_identification_tag" Name="swid:entitlement_required_indicator" Condition="1" Order="0" Flags="14" Text="false" UpdateIndexInParent="0"/>
     <ROW XmlElement="swidmajor" ParentElement="swidnumeric" Name="swid:major" Condition="1" Order="0" Flags="14" Text="1" UpdateIndexInParent="0"/>
     <ROW XmlElement="swidminor" ParentElement="swidnumeric" Name="swid:minor" Condition="1" Order="1" Flags="14" Text="6" UpdateIndexInParent="0"/>