diff --git a/.gitignore b/.gitignore
index f9a58f31c..5f8c61f41 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,7 @@ Binaries/
 Logs/
 Source/*.csproj
 !Source/Engine/Debug
+/Source/Platforms/Editor/Linux/Mono/etc/mono/registry
 
 # User-specific files
 *.suo
@@ -22,11 +23,6 @@ Source/*.csproj
 *.VisualState.xml
 TestResult.xml
 
-# Build Results of an ATL Project
-[Dd]ebugPS/
-[Rr]eleasePS/
-dlldata.c
-
 # NuGet Packages Directory
 packages/**/*
 !packages/repositories.config
@@ -56,9 +52,6 @@ packages/**/*
 *.svclog
 *.scc
 
-# Chutzpah Test files
-_Chutzpah*
-
 # Visual C++ cache files
 ipch/
 *.aps
@@ -72,9 +65,6 @@ ipch/
 *.vsp
 *.vspx
 
-# TFS 2012 Local Workspace
-$tf/
-
 # Guidance Automation Toolkit
 *.gpState
 
@@ -92,37 +82,6 @@ _TeamCity*
 # DotCover is a Code Coverage Tool
 *.dotCover
 
-# NCrunch
-_NCrunch_*
-.*crunch*.local.xml
-
-# MightyMoose
-*.mm.*
-AutoTest.Net/
-
-# Web workbench (sass)
-.sass-cache/
-
-# Installshield output folder
-[Ee]xpress/
-
-# DocProject is a documentation generator add-in
-DocProject/buildhelp/
-DocProject/Help/*.HxT
-DocProject/Help/*.HxC
-DocProject/Help/*.hhc
-DocProject/Help/*.hhk
-DocProject/Help/*.hhp
-DocProject/Help/Html2
-DocProject/Help/html
-
-# Click-Once directory
-publish/
-
-# Publish Web Output
-*.[Pp]ublish.xml
-*.azurePubxml
-
 # Enable "build/" folder in the NuGet Packages folder since
 # NuGet packages use it for MSBuild targets.
 # This line needs to be after the ignore of the build folder
@@ -149,32 +108,9 @@ ClientBin/
 *.publishsettings
 node_modules/
 
-# RIA/Silverlight projects
-Generated_Code/
-
-# Backup & report files from converting an old project files
-_UpgradeReport_Files/
-Backup*/
-UpgradeLog*.XML
-UpgradeLog*.htm
-
-# SQL Server files
-*.mdf
-*.ldf
-
-# Business Intelligence projects
-*.rdl.data
-*.bim.layout
-*.bim_*.settings
-
 # Microsoft Fakes
 FakesAssemblies/
 
-# LightSwitch generated files
-GeneratedArtifacts/
-_Pvt_Extensions/
-ModelManifest.xml
-
 # IDE files
 *.VC.db
 enc_temp_folder/
@@ -185,3 +121,4 @@ obj/
 *.vcxproj.filters
 .vscode/
 *.code-workspace
+