diff --git a/server/core/BookConverter/ConvertBase.js b/server/core/BookConverter/ConvertBase.js
index a9ec0cc9..ca78b442 100644
--- a/server/core/BookConverter/ConvertBase.js
+++ b/server/core/BookConverter/ConvertBase.js
@@ -32,13 +32,20 @@ class ConvertBase {
     async execConverter(path, args, onData) {
         try {
             const result = await utils.spawnProcess(path, {args, onData});
-            if (result.code != 0)
-                throw new Error(`Внешний конвертер завершился с ошибкой: ${result.code}`);
+            if (result.code != 0) {
+                let error = result.code;
+                if (this.config.branch == 'development')
+                    error = `exec: ${path}, stdout: ${result.stdout}, stderr: ${result.stderr}`;
+                throw new Error(`Внешний конвертер завершился с ошибкой: ${error}`);
+            }
         } catch(e) {
-            if (e.status == 'killed')
+            if (e.status == 'killed') {
                 throw new Error('Слишком долгое ожидание конвертера');
-            else
+            } else if (e.status == 'error') {
                 throw new Error(e.error);
+            } else {
+                throw new Error(e);
+            }
         }
     }
 
diff --git a/server/core/BookConverter/ConvertDoc.js b/server/core/BookConverter/ConvertDoc.js
new file mode 100644
index 00000000..97a2dad6
--- /dev/null
+++ b/server/core/BookConverter/ConvertDoc.js
@@ -0,0 +1,35 @@
+const fs = require('fs-extra');
+const path = require('path');
+
+const ConvertDocX = require('./ConvertDocX');
+
+class ConvertDoc extends ConvertDocX {
+    check(data, opts) {
+        const {inputFiles} = opts;
+
+        return this.config.useExternalBookConverter && 
+            inputFiles.sourceFileType && inputFiles.sourceFileType.ext == 'msi';
+    }
+
+    async run(data, opts) {
+        if (!this.check(data, opts))
+            return false;
+        await this.checkExternalConverterPresent();
+
+        const {inputFiles, callback} = opts;
+
+        const outFile = `${inputFiles.fileListDir}/${path.basename(inputFiles.sourceFile)}`;
+        const docFile = `${outFile}.doc`;
+        const docxFile = `${outFile}.docx`;
+        const fb2File = `${outFile}.fb2`;
+
+        await fs.copy(inputFiles.sourceFile, docFile);
+        await this.execConverter(this.sofficePath, ['--headless', '--convert-to', 'docx', '--outdir', inputFiles.fileListDir, docFile], (data) => {
+            console.log(data.toString());
+        });
+
+        return await super.convert(docxFile, fb2File, callback);
+    }
+}
+
+module.exports = ConvertDoc;
diff --git a/server/core/BookConverter/ConvertDocX.js b/server/core/BookConverter/ConvertDocX.js
index c94555e1..8978475f 100644
--- a/server/core/BookConverter/ConvertDocX.js
+++ b/server/core/BookConverter/ConvertDocX.js
@@ -20,6 +20,16 @@ class ConvertDocX extends ConvertBase {
         return false;
     }
 
+    async convert(docxFile, fb2File, callback) {
+        let perc = 0;
+        await this.execConverter(this.calibrePath, [docxFile, fb2File], () => {
+            perc = (perc < 100 ? perc + 5 : 50);
+            callback(perc);
+        });
+
+        return await fs.readFile(fb2File);
+    }
+
     async run(data, opts) {
         if (!this.check(data, opts))
             return false;
@@ -33,13 +43,7 @@ class ConvertDocX extends ConvertBase {
 
         await fs.copy(inputFiles.sourceFile, docxFile);
 
-        let perc = 0;
-        await this.execConverter(this.calibrePath, [docxFile, fb2File], () => {
-            perc = (perc < 100 ? perc + 5 : 50);
-            callback(perc);
-        });
-
-        return await fs.readFile(fb2File);
+        return await this.convert(docxFile, fb2File, callback);
     }
 }
 
diff --git a/server/core/BookConverter/index.js b/server/core/BookConverter/index.js
index 68d97ba6..40013536 100644
--- a/server/core/BookConverter/index.js
+++ b/server/core/BookConverter/index.js
@@ -4,6 +4,7 @@ const FileDetector = require('../FileDetector');
 //порядок важен
 const convertClassFactory = [
     require('./ConvertDocX'),
+    require('./ConvertDoc'),
     require('./ConvertFb2'),
     require('./ConvertSamlib'),
     require('./ConvertHtml'),