diff --git a/education/windows/TOC.yml b/education/windows/toc.yml
similarity index 100%
rename from education/windows/TOC.yml
rename to education/windows/toc.yml
diff --git a/windows/deployment/TOC.yml b/windows/deployment/toc.yml
similarity index 100%
rename from windows/deployment/TOC.yml
rename to windows/deployment/toc.yml
diff --git a/windows/security/TOC.yml b/windows/security/toc.yml
similarity index 100%
rename from windows/security/TOC.yml
rename to windows/security/toc.yml