diff --git a/aspnetmvc-toc.html b/aspnetmvc-toc.html
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+++ b/aspnetmvc-toc.html
@@ -3145,7 +3145,7 @@
     <li>XlsIO</li>
 	<li>
         Release Notes
-        <ul><li>2021 volume 3 - v19.3.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v19.3.0.59">v19.3.0.59</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.57">v19.3.0.57</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.56">v19.3.0.56</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.55">v19.3.0.55</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.54">v19.3.0.54</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.48">v19.3.0.48</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.47">v19.3.0.47</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.46">v19.3.0.46</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.45">v19.3.0.45</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.44">v19.3.0.44</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v19.3.0.53">v19.3.0.53 Service Pack Release</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.43">v19.3.0.43 Main Release</a></li></ul></li><li>2021 Volume 2 - v19.2.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v19.2.0.62">v19.2.0.62</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.60">v19.2.0.60</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.59">v19.2.0.59</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.57">v19.2.0.57</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.56">v19.2.0.56</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.51">v19.2.0.51</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.49">v19.2.0.49</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.48">v19.2.0.48</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.47">v19.2.0.47</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.46">v19.2.0.46</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v19.2.0.55">v19.2.0.55 Service Pack Release</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.44">v19.2.0.44 Main Release </a></li></ul></li><li>2021 Volume 1 - v19.1.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v19.1.0.69">v19.1.0.69</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.67">v19.1.0.67</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.66">v19.1.0.66</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.65">v19.1.0.65</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.64">v19.1.0.64</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.59">v19.1.0.59</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.58">v19.1.0.58</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.57">v19.1.0.57</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.56">v19.1.0.56</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.55">v19.1.0.55</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v19.1.0.63">v19.1.0.63 Service Pack Release</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.54">v19.1.0.54 Main release</a></li></ul></li><li>2020 Volume 4 - v18.4.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v18.4.0.49">v18.4.0.49</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.48">v18.4.0.48</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.47">v18.4.0.47</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.46">v18.4.0.46</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.44">v18.4.0.44</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.43">v18.4.0.43</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.42">v18.4.0.42</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.41">v18.4.0.41</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.35">v18.4.0.35</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.34">v18.4.0.34</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.33">v18.4.0.33</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.32">v18.4.0.32</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.31">v18.4.0.31</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v18.4.0.39">v18.4.0.39 Service Pack Release</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.30">v18.4.0.30 Main Release</a></li></ul></li><li>2020 Volume 3  - v18.3.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v18.3.0.53">v18.3.0.53</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.52">v18.3.0.52</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.51">v18.3.0.51</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.50">v18.3.0.50</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.48">v18.3.0.48</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.44">v18.3.0.44</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.42">v18.3.0.42</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.40">v18.3.0.40</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.38">v18.3.0.38</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v18.3.0.47">v18.3.0.47 Service Pack Release</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.35">v18.3.0.35 Main release</a></li></ul></li><li>2020 Volume 2 - v18.2.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v18.2.0.59">v18.2.0.59</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.58">v18.2.0.58</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.57">v18.2.0.57</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.56">v18.2.0.56</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.55">v18.2.0.55</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.54">v18.2.0.54</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.48">v18.2.0.48</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.47">v18.2.0.47</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.46">v18.2.0.46</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.45">v18.2.0.45</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v18.2.0.44">v18.2.0.44 Main Release</a></li></ul></li><li>2020 Volume 1 - v18.1.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v18.1.0.59">v18.1.0.59</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.57">v18.1.0.57</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.56">v18.1.0.56</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.55">v18.1.0.55</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.54">v18.1.0.54</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.53">v18.1.0.53</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.48">v18.1.0.48</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.46">v18.1.0.46</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.45">v18.1.0.45</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.44">v18.1.0.44</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.43">v18.1.0.43</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v18.1.0.52">v18.1.0.52 Service Pack Release</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.42">v18.1.0.42 Main Release</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.36">v18.1.0.36 Beta Release</a></li></ul></li><li>2019 Volume 4 - v17.4.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v17.4.0.55">v17.4.0.55</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.53">v17.4.0.53</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.51">v17.4.0.51</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.50">v17.4.0.50</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.49">v17.4.0.49</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.47">v17.4.0.47</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.44">v17.4.0.44</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.43">v17.4.0.43</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.41">v17.4.0.41</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.40">v17.4.0.40</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v17.4.0.46">v17.4.0.46 Service Pack Release</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.39">v17.4.0.39 Main Release</a></li></ul></li>
+        <ul><li>2021 Volume 4  - v19.4.0.*<ul><li><a href="/aspnetmvc/release-notes/v19.4.0.38">v19.4.0.38 Main Release</a></li></ul></li><li>2021 volume 3 - v19.3.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v19.3.0.59">v19.3.0.59</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.57">v19.3.0.57</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.56">v19.3.0.56</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.55">v19.3.0.55</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.54">v19.3.0.54</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.48">v19.3.0.48</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.47">v19.3.0.47</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.46">v19.3.0.46</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.45">v19.3.0.45</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.44">v19.3.0.44</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v19.3.0.53">v19.3.0.53 Service Pack Release</a></li><li><a href="/aspnetmvc/release-notes/v19.3.0.43">v19.3.0.43 Main Release</a></li></ul></li><li>2021 Volume 2 - v19.2.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v19.2.0.62">v19.2.0.62</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.60">v19.2.0.60</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.59">v19.2.0.59</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.57">v19.2.0.57</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.56">v19.2.0.56</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.51">v19.2.0.51</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.49">v19.2.0.49</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.48">v19.2.0.48</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.47">v19.2.0.47</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.46">v19.2.0.46</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v19.2.0.55">v19.2.0.55 Service Pack Release</a></li><li><a href="/aspnetmvc/release-notes/v19.2.0.44">v19.2.0.44 Main Release </a></li></ul></li><li>2021 Volume 1 - v19.1.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v19.1.0.69">v19.1.0.69</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.67">v19.1.0.67</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.66">v19.1.0.66</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.65">v19.1.0.65</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.64">v19.1.0.64</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.59">v19.1.0.59</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.58">v19.1.0.58</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.57">v19.1.0.57</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.56">v19.1.0.56</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.55">v19.1.0.55</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v19.1.0.63">v19.1.0.63 Service Pack Release</a></li><li><a href="/aspnetmvc/release-notes/v19.1.0.54">v19.1.0.54 Main release</a></li></ul></li><li>2020 Volume 4 - v18.4.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v18.4.0.49">v18.4.0.49</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.48">v18.4.0.48</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.47">v18.4.0.47</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.46">v18.4.0.46</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.44">v18.4.0.44</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.43">v18.4.0.43</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.42">v18.4.0.42</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.41">v18.4.0.41</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.35">v18.4.0.35</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.34">v18.4.0.34</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.33">v18.4.0.33</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.32">v18.4.0.32</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.31">v18.4.0.31</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v18.4.0.39">v18.4.0.39 Service Pack Release</a></li><li><a href="/aspnetmvc/release-notes/v18.4.0.30">v18.4.0.30 Main Release</a></li></ul></li><li>2020 Volume 3  - v18.3.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v18.3.0.53">v18.3.0.53</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.52">v18.3.0.52</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.51">v18.3.0.51</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.50">v18.3.0.50</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.48">v18.3.0.48</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.44">v18.3.0.44</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.42">v18.3.0.42</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.40">v18.3.0.40</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.38">v18.3.0.38</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v18.3.0.47">v18.3.0.47 Service Pack Release</a></li><li><a href="/aspnetmvc/release-notes/v18.3.0.35">v18.3.0.35 Main release</a></li></ul></li><li>2020 Volume 2 - v18.2.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v18.2.0.59">v18.2.0.59</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.58">v18.2.0.58</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.57">v18.2.0.57</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.56">v18.2.0.56</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.55">v18.2.0.55</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.54">v18.2.0.54</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.48">v18.2.0.48</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.47">v18.2.0.47</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.46">v18.2.0.46</a></li><li><a href="/aspnetmvc/release-notes/v18.2.0.45">v18.2.0.45</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v18.2.0.44">v18.2.0.44 Main Release</a></li></ul></li><li>2020 Volume 1 - v18.1.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v18.1.0.59">v18.1.0.59</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.57">v18.1.0.57</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.56">v18.1.0.56</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.55">v18.1.0.55</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.54">v18.1.0.54</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.53">v18.1.0.53</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.48">v18.1.0.48</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.46">v18.1.0.46</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.45">v18.1.0.45</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.44">v18.1.0.44</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.43">v18.1.0.43</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v18.1.0.52">v18.1.0.52 Service Pack Release</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.42">v18.1.0.42 Main Release</a></li><li><a href="/aspnetmvc/release-notes/v18.1.0.36">v18.1.0.36 Beta Release</a></li></ul></li><li>2019 Volume 4 - v17.4.0.*<ul><li> Weekly Nuget Release <ul><li><a href="/aspnetmvc/release-notes/v17.4.0.55">v17.4.0.55</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.53">v17.4.0.53</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.51">v17.4.0.51</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.50">v17.4.0.50</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.49">v17.4.0.49</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.47">v17.4.0.47</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.44">v17.4.0.44</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.43">v17.4.0.43</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.41">v17.4.0.41</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.40">v17.4.0.40</a></li></ul></li><li><a href="/aspnetmvc/release-notes/v17.4.0.46">v17.4.0.46 Service Pack Release</a></li><li><a href="/aspnetmvc/release-notes/v17.4.0.39">v17.4.0.39 Main Release</a></li></ul></li>
 			<li>2019 Volume 3 - v17.3.0.*
 				<ul>
 				    <li> Weekly Nuget Release 
diff --git a/aspnetmvc/Release-notes/v19.4.0.38.md b/aspnetmvc/Release-notes/v19.4.0.38.md
new file mode 100644
index 000000000..771ccf883
--- /dev/null
+++ b/aspnetmvc/Release-notes/v19.4.0.38.md
@@ -0,0 +1,17 @@
+---
+title: Essential Studio for ASP.NET MVC 2021 Volume 4 Main Release Notes  
+description: Essential Studio for ASP.NET MVC 2021 Volume 4 Main Release Notes  
+platform: ejmvc
+documentation: ug
+---
+
+# Essential Studio for ASP.NET MVC  Release Notes  
+
+{% include release-info.html date="December 17, 2021"  version="v19.4.0.38" %} 
+
+
+{% directory path: _includes/release-notes/v19.4.0.38 %}
+
+{% include {{file.url}} %}
+
+{% enddirectory %}
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