diff --git a/README.md b/README.md
index 13b45f5..2eca142 100644
--- a/README.md
+++ b/README.md
@@ -101,4 +101,14 @@ Colors are in ARGB Hex format.
 
 > Why isn't the Mac version signed? 
 
-The cost of the Apple Developer Program is quite high with a platform that currently has very few users. I may pay for it if it's a very requested feature but not for now.
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+The cost of the Apple Developer Program is quite high with a platform that currently has very few users. I may pay for it if it's a very requested feature but not for now.
+
+> Authentication has failed. What's wrong?
+
+Currently there are some limitations regarding this topic. Here are some known problematic setups:
+- SSH keys managed by external agents (https://github.com/JetpackDuba/Gitnuro/issues/17).
+- Configurations added to .ssh/config
+- Non-default ssh dir path.
+- Multicast DNS remote URL (https://github.com/JetpackDuba/Gitnuro/issues/19).
+
+If the authentication fails and you think its due to a different reason, please open a new issue.