diff --git a/vscode-dotnet-runtime-library/distro-data/distro-support.json b/vscode-dotnet-runtime-library/distro-data/distro-support.json
index 304bf448..af00a70f 100644
--- a/vscode-dotnet-runtime-library/distro-data/distro-support.json
+++ b/vscode-dotnet-runtime-library/distro-data/distro-support.json
@@ -130,11 +130,6 @@
 				"version": "18.04",
 				"preInstallCommands":
 				[
-					{
-						"runUnderSudo": true,
-						"commandRoot": "apt-get",
-						"commandParts": ["update"]
-					},
 					{
 						"runUnderSudo": true,
 						"commandRoot": "apt-get",
@@ -149,6 +144,11 @@
 						"runUnderSudo": true,
 						"commandRoot": "dpkg",
 						"commandParts": ["-i", "packages-microsoft-prod.deb"]
+					},
+					{
+						"runUnderSudo": true,
+						"commandRoot": "apt-get",
+						"commandParts": ["update"]
 					}
 				]
 			},
diff --git a/vscode-dotnet-runtime-library/src/Acquisition/GenericDistroSDKProvider.ts b/vscode-dotnet-runtime-library/src/Acquisition/GenericDistroSDKProvider.ts
index d11b6638..2a907091 100644
--- a/vscode-dotnet-runtime-library/src/Acquisition/GenericDistroSDKProvider.ts
+++ b/vscode-dotnet-runtime-library/src/Acquisition/GenericDistroSDKProvider.ts
@@ -15,13 +15,7 @@ export class GenericDistroSDKProvider extends IDistroDotnetSDKProvider
 {
     public async installDotnet(fullySpecifiedVersion : string, installType : LinuxInstallType): Promise<string>
     {
-        const supportStatus = await this.getDotnetVersionSupportStatus(fullySpecifiedVersion, installType);
-        if(supportStatus === DotnetDistroSupportStatus.Microsoft)
-        {
-            const myVersionDetails = this.myVersionDetails();
-            const preInstallCommands = myVersionDetails[this.preinstallCommandKey] as CommandExecutorCommand[];
-            await this.commandRunner.executeMultipleCommands(preInstallCommands);
-        }
+        await this.injectPMCFeed(fullySpecifiedVersion, installType);
 
         let commands = this.myDistroCommands(this.installCommandKey);
         const sdkPackage = await this.myDotnetVersionPackageName(fullySpecifiedVersion, installType);
@@ -39,6 +33,10 @@ export class GenericDistroSDKProvider extends IDistroDotnetSDKProvider
     public async getInstalledGlobalDotnetPathIfExists(installType : LinuxInstallType) : Promise<string | null>
     {
         const commandResult = await this.commandRunner.executeMultipleCommands(this.myDistroCommands(this.currentInstallPathCommandKey));
+        if(commandResult[0])
+        {
+            commandResult[0] = commandResult[0].trim();
+        }
         return commandResult[0];
     }
 
@@ -129,7 +127,7 @@ export class GenericDistroSDKProvider extends IDistroDotnetSDKProvider
 
         // we need to run this command in the root directory otherwise local dotnets on the path may interfere
         const rootDir = path.parse(__dirname).root;
-        let commandResult = (await this.commandRunner.executeMultipleCommands(command, rootDir))[0];
+        let commandResult = (await this.commandRunner.executeMultipleCommands(command, { cwd: path.resolve(rootDir), shell: true }))[0];
 
         commandResult = commandResult.replace('\n', '');
         if(!this.versionResolver.isValidLongFormVersionFormat(commandResult))
@@ -170,37 +168,6 @@ export class GenericDistroSDKProvider extends IDistroDotnetSDKProvider
         return Promise.resolve(DotnetDistroSupportStatus.Unknown);
     }
 
-    protected myVersionDetails() : any
-    {
-
-        const distroVersions = this.distroJson[this.distroVersion.distro][this.distroVersionsKey];
-        const versionData = distroVersions.filter((x: { [x: string]: string; }) => x[this.versionKey] === this.distroVersion.version)[0];
-        if(!versionData)
-        {
-            const closestVersion = this.findMostSimilarVersion(this.distroVersion.version, distroVersions.map((x: { [x: string]: string; }) => parseFloat(x[this.versionKey])));
-            return distroVersions.filter((x: { [x: string]: string; }) => parseFloat(x[this.versionKey]) === closestVersion)[0];
-        }
-        return versionData;
-    }
-
-    private findMostSimilarVersion(myVersion : string, knownVersions : number[]) : number
-    {
-        const sameMajorVersions = knownVersions.filter(x => Math.floor(x) === Math.floor(parseFloat(myVersion)));
-        if(sameMajorVersions && sameMajorVersions.length)
-        {
-            return Math.max(...sameMajorVersions);
-        }
-
-        const lowerMajorVersions = knownVersions.filter(x => x < Math.floor(parseFloat(myVersion)));
-        if(lowerMajorVersions && lowerMajorVersions.length)
-        {
-            return Math.max(...lowerMajorVersions);
-        }
-
-        // Just return the lowest known version, as it will be the closest to our version, as they are all larger than our version.
-        return Math.min(...knownVersions);
-    }
-
     public async getRecommendedDotnetVersion(installType : LinuxInstallType) : Promise<string>
     {
         let maxVersion = '0';
diff --git a/vscode-dotnet-runtime-library/src/Acquisition/IDistroDotnetSDKProvider.ts b/vscode-dotnet-runtime-library/src/Acquisition/IDistroDotnetSDKProvider.ts
index 752ce0a3..4b3141fc 100644
--- a/vscode-dotnet-runtime-library/src/Acquisition/IDistroDotnetSDKProvider.ts
+++ b/vscode-dotnet-runtime-library/src/Acquisition/IDistroDotnetSDKProvider.ts
@@ -172,7 +172,7 @@ export abstract class IDistroDotnetSDKProvider {
         return supportedType;
     }
 
-    protected async myVersionPackages(installType : LinuxInstallType) : Promise<LinuxPackageCollection[]>
+    protected async myVersionPackages(installType : LinuxInstallType, haveTriedFeedInjectionAlready = false) : Promise<LinuxPackageCollection[]>
     {
         const availableVersions : LinuxPackageCollection[] = [];
 
@@ -203,9 +203,60 @@ export abstract class IDistroDotnetSDKProvider {
             }
         }
 
+        if(availableVersions.length === 0 && !haveTriedFeedInjectionAlready)
+        {
+            // PMC is only injected and should only be injected for MSFT feed distros.
+            // Our check runs by checking the feature band first, so that needs to be supported for it to fallback to the preinstall command check.
+            const fakeVersionToCheckMicrosoftSupportStatus = '6.0.1xx';
+
+            await this.injectPMCFeed(fakeVersionToCheckMicrosoftSupportStatus, installType);
+            return this.myVersionPackages(installType, true);
+        }
         return availableVersions;
     }
 
+    protected async injectPMCFeed(fullySpecifiedVersion : string, installType : LinuxInstallType)
+    {
+        const supportStatus = await this.getDotnetVersionSupportStatus(fullySpecifiedVersion, installType);
+        if(supportStatus === DotnetDistroSupportStatus.Microsoft)
+        {
+            const myVersionDetails = this.myVersionDetails();
+            const preInstallCommands = myVersionDetails[this.preinstallCommandKey] as CommandExecutorCommand[];
+            await this.commandRunner.executeMultipleCommands(preInstallCommands);
+        }
+    }
+
+    protected myVersionDetails() : any
+    {
+
+        const distroVersions = this.distroJson[this.distroVersion.distro][this.distroVersionsKey];
+        const versionData = distroVersions.filter((x: { [x: string]: string; }) => x[this.versionKey] === this.distroVersion.version)[0];
+        if(!versionData)
+        {
+            const closestVersion = this.findMostSimilarVersion(this.distroVersion.version, distroVersions.map((x: { [x: string]: string; }) => parseFloat(x[this.versionKey])));
+            return distroVersions.filter((x: { [x: string]: string; }) => parseFloat(x[this.versionKey]) === closestVersion)[0];
+        }
+        return versionData;
+    }
+
+    protected findMostSimilarVersion(myVersion : string, knownVersions : number[]) : number
+    {
+        const sameMajorVersions = knownVersions.filter(x => Math.floor(x) === Math.floor(parseFloat(myVersion)));
+        if(sameMajorVersions && sameMajorVersions.length)
+        {
+            return Math.max(...sameMajorVersions);
+        }
+
+        const lowerMajorVersions = knownVersions.filter(x => x < Math.floor(parseFloat(myVersion)));
+        if(lowerMajorVersions && lowerMajorVersions.length)
+        {
+            return Math.max(...lowerMajorVersions);
+        }
+
+        // Just return the lowest known version, as it will be the closest to our version, as they are all larger than our version.
+        return Math.min(...knownVersions);
+    }
+
     protected myDistroStrings(stringKey : string) : string
     {
         return this.distroJson[this.distroVersion.distro][stringKey];