diff --git a/app/MindWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua b/app/MindWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua
index 6ae69ea1..132c2b72 100644
--- a/app/MindWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua	
+++ b/app/MindWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua	
@@ -7611,8 +7611,8 @@ UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T13982828
 -- File has no extension
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T1555980031"] = "Datei hat keine Erweiterung"
 
--- This file format is not supported. Please convert .doc file to .docx (e.g. with Word).
-UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T2634293666"] = "Dieses Dateiformat wird nicht unterstützt. Bitte konvertieren Sie die .doc-Datei in .docx (z. B. mit Word)."
+-- This file format is not supported.
+UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T2634293666"] = "Dieses Dateiformat wird nicht unterstützt. Bitte konvertieren Sie die .doc-Datei in .docx (z. B. mit Microsoft Word)."
 
 -- Audio files are not supported yet
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T2919730669"] = "Audio-Dateien werden noch nicht unterstützt."
diff --git a/app/MindWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua b/app/MindWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua
index b8c9c83f..ee4d24c7 100644
--- a/app/MindWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua	
+++ b/app/MindWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua	
@@ -7623,8 +7623,8 @@ UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T29806295
 -- Images are not supported at this place
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T305247150"] = "Images are not supported at this place"
 
--- Dieses Dateiformat wird nicht unterstützt. Bitte .doc Datei nach .docx konvertiern (z.B. mit Word).
-UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T1506058512"] = "This file format is not supported. Please convert .doc file to .docx (e.g. with Word)."
+-- This file format is not supported.
+UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T1506058512"] = "This file format is not supported. Please convert the .doc file to .docx (e.g. with Microsoft Word)."
 
 -- Unsupported file type
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::VALIDATION::FILEEXTENSIONVALIDATION::T4041351522"] = "Unsupported file type"
diff --git a/app/MindWork AI Studio/wwwroot/changelog/v26.4.1.md b/app/MindWork AI Studio/wwwroot/changelog/v26.4.1.md
index 3ff00c6a..2cf56561 100644
--- a/app/MindWork AI Studio/wwwroot/changelog/v26.4.1.md	
+++ b/app/MindWork AI Studio/wwwroot/changelog/v26.4.1.md	
@@ -37,6 +37,7 @@
 - Fixed an issue where file and folder selection dialogs could open more than once on Windows. Thanks to Bernhard for reporting this bug.
 - Fixed an issue where exporting to Word could fail when the message contained certain formatting.
 - Fixed security issues in the native app runtime by strengthening how AI Studio creates and protects the secret values used for its internal secure connection.
+- Fixed an issue by no longer accepting .doc files. Users will now receive an appropriate error message when attempting to upload them. Thanks to Bernhard for reporting this bug.
 - Updated several security-sensitive Rust dependencies in the native runtime to address known vulnerabilities.
 - Updated .NET to v9.0.15
 - Updated dependencies
\ No newline at end of file