diff --git a/dotnet/Devolutions.Authenticode/Authenticode.cs b/dotnet/Devolutions.Authenticode/Authenticode.cs
index 913f53a..ebd109f 100644
--- a/dotnet/Devolutions.Authenticode/Authenticode.cs
+++ b/dotnet/Devolutions.Authenticode/Authenticode.cs
@@ -352,10 +352,17 @@ private static Signature GetSignatureFromCatalog(string filename)
                                     }
                                     else
                                     {
-                                        // ProductFile has to be Catalog signed. Hence validating
-                                        // to see if the Catalog API is functional using the ProductFile.
-                                        Signature productFileSignature = GetSignatureFromCatalog(productFile);
-                                        Signature.CatalogApiAvailable = (productFileSignature != null && productFileSignature.Status == SignatureStatus.Valid);
+                                        try
+                                        {
+                                            // ProductFile has to be Catalog signed. Hence validating
+                                            // to see if the Catalog API is functional using the ProductFile.
+                                            Signature productFileSignature = GetSignatureFromCatalog(productFile);
+                                            Signature.CatalogApiAvailable = (productFileSignature != null && productFileSignature.Status == SignatureStatus.Valid);
+                                        }
+                                        catch (IOException)
+                                        {
+                                            Signature.CatalogApiAvailable = false;
+                                        }
                                     }
                                 }
                             }