diff --git a/guide/ops/locations/_azure-ARM.md b/guide/ops/locations/_azure-ARM.md
index edcf26e5..7c6ed6de 100644
--- a/guide/ops/locations/_azure-ARM.md
+++ b/guide/ops/locations/_azure-ARM.md
@@ -94,3 +94,9 @@ The loginUser can be anything, as long as it's specified.
 
 The `overrideAuthenticateSudo: true` key tells Apache Brooklyn that default on Azure images do not have passwordless sudo 
 configured by default.
+
+#### Known issues
+There are currently two know issues with Azure ARM:
+
+* It can take a long time for VMs to be provisioned
+* Azure ARM appears to have some fairly strict rate limiting
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