diff --git a/assets/win10x64-ltsc.xml b/assets/win10x64-ltsc.xml
index 7f111ff..4edf664 100644
--- a/assets/win10x64-ltsc.xml
+++ b/assets/win10x64-ltsc.xml
@@ -395,6 +395,11 @@
         </SynchronousCommand>
         <SynchronousCommand wcm:action="add">
           <Order>12</Order>
+          <CommandLine>reg.exe add "HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" /v "AllowInsecureGuestAuth" /t REG_DWORD /d 1 /f</CommandLine>
+          <Description>Allow guest access to network shares</Description>
+        </SynchronousCommand>
+        <SynchronousCommand wcm:action="add">
+          <Order>13</Order>
           <CommandLine>msiexec /i E:\virtio-win-gt-x64.msi /qb!</CommandLine>
           <Description>Install VirtIO drivers</Description>
         </SynchronousCommand>
diff --git a/assets/win10x64.xml b/assets/win10x64.xml
index 6cc5d69..1520a2b 100644
--- a/assets/win10x64.xml
+++ b/assets/win10x64.xml
@@ -391,6 +391,11 @@
         </SynchronousCommand>
         <SynchronousCommand wcm:action="add">
           <Order>12</Order>
+          <CommandLine>reg.exe add "HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" /v "AllowInsecureGuestAuth" /t REG_DWORD /d 1 /f</CommandLine>
+          <Description>Allow guest access to network shares</Description>
+        </SynchronousCommand>
+        <SynchronousCommand wcm:action="add">
+          <Order>13</Order>
           <CommandLine>msiexec /i E:\virtio-win-gt-x64.msi /qb!</CommandLine>
           <Description>Install VirtIO drivers</Description>
         </SynchronousCommand>
diff --git a/assets/win11x64.xml b/assets/win11x64.xml
index c22e654..0b1459a 100644
--- a/assets/win11x64.xml
+++ b/assets/win11x64.xml
@@ -419,6 +419,11 @@
         </SynchronousCommand>
         <SynchronousCommand wcm:action="add">
           <Order>14</Order>
+          <CommandLine>reg.exe add "HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" /v "AllowInsecureGuestAuth" /t REG_DWORD /d 1 /f</CommandLine>
+          <Description>Allow guest access to network shares</Description>
+        </SynchronousCommand>
+        <SynchronousCommand wcm:action="add">
+          <Order>15</Order>
           <CommandLine>msiexec /i E:\virtio-win-gt-x64.msi /qb!</CommandLine>
           <Description>Install VirtIO drivers</Description>
         </SynchronousCommand>
diff --git a/assets/win2016-eval.xml b/assets/win2016-eval.xml
index 936cb4c..7fee274 100644
--- a/assets/win2016-eval.xml
+++ b/assets/win2016-eval.xml
@@ -318,6 +318,11 @@
         </SynchronousCommand>
         <SynchronousCommand wcm:action="add">
           <Order>12</Order>
+          <CommandLine>reg.exe add "HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" /v "AllowInsecureGuestAuth" /t REG_DWORD /d 1 /f</CommandLine>
+          <Description>Allow guest access to network shares</Description>
+        </SynchronousCommand>
+        <SynchronousCommand wcm:action="add">
+          <Order>13</Order>
           <CommandLine>msiexec /i E:\virtio-win-gt-x64.msi /qb!</CommandLine>
           <Description>Install VirtIO drivers</Description>
         </SynchronousCommand>
diff --git a/assets/win2019-eval.xml b/assets/win2019-eval.xml
index d4251aa..8debaaa 100644
--- a/assets/win2019-eval.xml
+++ b/assets/win2019-eval.xml
@@ -322,6 +322,11 @@
         </SynchronousCommand>
         <SynchronousCommand wcm:action="add">
           <Order>12</Order>
+          <CommandLine>reg.exe add "HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" /v "AllowInsecureGuestAuth" /t REG_DWORD /d 1 /f</CommandLine>
+          <Description>Allow guest access to network shares</Description>
+        </SynchronousCommand>
+        <SynchronousCommand wcm:action="add">
+          <Order>13</Order>
           <CommandLine>msiexec /i E:\virtio-win-gt-x64.msi /qb!</CommandLine>
           <Description>Install VirtIO drivers</Description>
         </SynchronousCommand>
diff --git a/assets/win2022-eval.xml b/assets/win2022-eval.xml
index 41afd0d..2818bbb 100644
--- a/assets/win2022-eval.xml
+++ b/assets/win2022-eval.xml
@@ -322,6 +322,11 @@
         </SynchronousCommand>
         <SynchronousCommand wcm:action="add">
           <Order>12</Order>
+          <CommandLine>reg.exe add "HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" /v "AllowInsecureGuestAuth" /t REG_DWORD /d 1 /f</CommandLine>
+          <Description>Allow guest access to network shares</Description>
+        </SynchronousCommand>
+        <SynchronousCommand wcm:action="add">
+          <Order>13</Order>
           <CommandLine>msiexec /i E:\virtio-win-gt-x64.msi /qb!</CommandLine>
           <Description>Install VirtIO drivers</Description>
         </SynchronousCommand>
diff --git a/assets/win81x64.xml b/assets/win81x64.xml
index 5d8a491..9578b9d 100644
--- a/assets/win81x64.xml
+++ b/assets/win81x64.xml
@@ -312,6 +312,11 @@
         </SynchronousCommand>
         <SynchronousCommand wcm:action="add">
           <Order>12</Order>
+          <CommandLine>reg.exe add "HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" /v "AllowInsecureGuestAuth" /t REG_DWORD /d 1 /f</CommandLine>
+          <Description>Allow guest access to network shares</Description>
+        </SynchronousCommand>
+        <SynchronousCommand wcm:action="add">
+          <Order>13</Order>
           <CommandLine>msiexec /i E:\virtio-win-gt-x64.msi /qb!</CommandLine>
           <Description>Install VirtIO drivers</Description>
         </SynchronousCommand>