diff --git a/.gitignore b/.gitignore
index 5abf3637..10c6347d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -223,7 +223,7 @@ ClientBin/
 *.publishsettings
 orleans.codegen.cs
 
-# Including strong name files can present a security risk 
+# Including strong name files can present a security risk
 # (https://github.com/github/gitignore/pull/2483#issue-259490424)
 #*.snk
 
@@ -319,7 +319,7 @@ __pycache__/
 # OpenCover UI analysis results
 OpenCover/
 
-# Azure Stream Analytics local run output 
+# Azure Stream Analytics local run output
 ASALocalRun/
 
 # MSBuild Binary and Structured Log
@@ -328,11 +328,14 @@ ASALocalRun/
 # NVidia Nsight GPU debugger configuration file
 *.nvuser
 
-# MFractors (Xamarin productivity tool) working folder 
+# MFractors (Xamarin productivity tool) working folder
 .mfractor/
 
 # MAC Files
 **/.DS_Store
 
+# Windows db files
+**/[tT]humbs.db
+
 ###### -- Custom Ignore Section, Make sure all files you add to the git repo are below this line  --  ######