diff --git a/flash/troubleshooting.mdx b/flash/troubleshooting.mdx
index ea3bac4f..bb7261f5 100644
--- a/flash/troubleshooting.mdx
+++ b/flash/troubleshooting.mdx
@@ -118,6 +118,23 @@ Get a key: https://docs.runpod.io/get-started/api-keys
    source ~/.bashrc
    ```
 
+### Corrupted credentials file
+
+**Error:**
+```
+Error: ~/.runpod/config.toml is corrupted and cannot be parsed.
+Run 'flash login' to re-authenticate, or delete the file and retry.
+```
+
+**Cause:** The credentials file at `~/.runpod/config.toml` contains invalid TOML and cannot be read. This can also appear as "No API key found" even after a successful `flash login`.
+
+**Solution:** Delete the credentials file and re-authenticate:
+
+```bash
+rm ~/.runpod/config.toml
+flash login
+```
+
 ### Invalid route configuration
 
 **Error:**