diff --git a/opencloudComLibrary/src/main/java/eu/opencloud/android/lib/common/network/ChunkFromFileRequestBody.kt b/opencloudComLibrary/src/main/java/eu/opencloud/android/lib/common/network/ChunkFromFileRequestBody.kt
index b6c8421120..47b5f4affc 100644
--- a/opencloudComLibrary/src/main/java/eu/opencloud/android/lib/common/network/ChunkFromFileRequestBody.kt
+++ b/opencloudComLibrary/src/main/java/eu/opencloud/android/lib/common/network/ChunkFromFileRequestBody.kt
@@ -88,6 +88,7 @@ class ChunkFromFileRequestBody(
             }
         } catch (exception: Exception) {
             Timber.e(exception, "Transferred " + alreadyTransferred + " bytes from a total of " + file.length())
+            throw exception
         }
     }
 
diff --git a/opencloudComLibrary/src/main/java/eu/opencloud/android/lib/resources/files/tus/CreateTusUploadRemoteOperation.kt b/opencloudComLibrary/src/main/java/eu/opencloud/android/lib/resources/files/tus/CreateTusUploadRemoteOperation.kt
index b482fc5f21..ab0329ec1f 100644
--- a/opencloudComLibrary/src/main/java/eu/opencloud/android/lib/resources/files/tus/CreateTusUploadRemoteOperation.kt
+++ b/opencloudComLibrary/src/main/java/eu/opencloud/android/lib/resources/files/tus/CreateTusUploadRemoteOperation.kt
@@ -46,26 +46,29 @@ class CreateTusUploadRemoteOperation(
             Base64.encodeToString(bytes, Base64.NO_WRAP)
     }
 
-    override fun run(client: OpenCloudClient): RemoteOperationResult<CreationResult> = try {
-        // Determine TUS endpoint URL based on provided parameters
-        val targetFileUrl = if (!tusUrl.isNullOrBlank()) {
-            tusUrl
-        } else {
-            val baseCollection = (collectionUrlOverride
-                ?: client.userFilesWebDavUri.toString()).trim()
-            // Remove trailing slash - OpenCloud expects no slash on space endpoints
-            val resolvedCollection = buildCollectionUrl(baseCollection, remotePath).trimEnd('/')
-            Timber.d("TUS resolved collection: %s", resolvedCollection)
-            resolvedCollection
-        }
+    override fun run(client: OpenCloudClient): RemoteOperationResult<CreationResult> {
+        var creationUploadFile: RandomAccessFile? = null
+        return try {
+            // Determine TUS endpoint URL based on provided parameters
+            val targetFileUrl = if (!tusUrl.isNullOrBlank()) {
+                tusUrl
+            } else {
+                val baseCollection = (collectionUrlOverride
+                    ?: client.userFilesWebDavUri.toString()).trim()
+                // Remove trailing slash - OpenCloud expects no slash on space endpoints
+                val resolvedCollection = buildCollectionUrl(baseCollection, remotePath).trimEnd('/')
+                Timber.d("TUS resolved collection: %s", resolvedCollection)
+                resolvedCollection
+            }
 
             Timber.d("TUS Creation URL: %s", targetFileUrl)
 
             // Prepare request body first
             val postBody: RequestBody = if (useCreationWithUpload && (firstChunkSize ?: 0L) > 0L) {
                 // creation-with-upload: include first chunk
-                // Don't use .use{} here - the channel must stay open for OkHttp to read
+                // Keep the channel open until OkHttp finishes reading the body.
                 val raf = RandomAccessFile(file, "r")
+                creationUploadFile = raf
                 val channel: FileChannel = raf.channel
                 ChunkFromFileRequestBody(
                     file = file,
@@ -158,10 +161,17 @@ class CreateTusUploadRemoteOperation(
                 Timber.w("TUS creation failed with status: %d", status)
                 RemoteOperationResult<CreationResult>(postMethod).apply { data = null }
             }
-    } catch (e: Exception) {
-        val result = RemoteOperationResult<CreationResult>(e)
-        Timber.e(e, "TUS creation operation failed")
-        result
+        } catch (e: Exception) {
+            val result = RemoteOperationResult<CreationResult>(e)
+            Timber.e(e, "TUS creation operation failed")
+            result
+        } finally {
+            try {
+                creationUploadFile?.close()
+            } catch (e: Exception) {
+                Timber.w(e, "Failed to close TUS creation upload file")
+            }
+        }
     }
 
     private fun isSuccess(status: Int) =
diff --git a/opencloudComLibrary/src/test/java/eu/opencloud/android/lib/resources/files/tus/TusIntegrationTest.kt b/opencloudComLibrary/src/test/java/eu/opencloud/android/lib/resources/files/tus/TusIntegrationTest.kt
index 944c7155ae..c9153d2130 100644
--- a/opencloudComLibrary/src/test/java/eu/opencloud/android/lib/resources/files/tus/TusIntegrationTest.kt
+++ b/opencloudComLibrary/src/test/java/eu/opencloud/android/lib/resources/files/tus/TusIntegrationTest.kt
@@ -8,12 +8,14 @@ import eu.opencloud.android.lib.common.OpenCloudAccount
 import eu.opencloud.android.lib.common.OpenCloudClient
 import eu.opencloud.android.lib.common.accounts.AccountUtils
 import eu.opencloud.android.lib.common.authentication.OpenCloudCredentialsFactory
+import eu.opencloud.android.lib.common.network.ChunkFromFileRequestBody
 import eu.opencloud.android.lib.common.operations.RemoteOperationResult
 import eu.opencloud.android.lib.resources.files.tus.CreateTusUploadRemoteOperation.Base64Encoder
 import okhttp3.mockwebserver.Dispatcher
 import okhttp3.mockwebserver.MockResponse
 import okhttp3.mockwebserver.MockWebServer
 import okhttp3.mockwebserver.RecordedRequest
+import okio.Buffer
 import org.junit.After
 import org.junit.Assert.*
 import org.junit.Before
@@ -21,6 +23,8 @@ import org.junit.Test
 import org.junit.runner.RunWith
 import org.robolectric.RobolectricTestRunner
 import java.io.File
+import java.io.RandomAccessFile
+import java.nio.channels.ClosedChannelException
 import java.util.Base64
 
 @RunWith(RobolectricTestRunner::class)
@@ -245,6 +249,32 @@ class TusIntegrationTest {
         // creation-with-upload sends Content-Type and Content-Length for the chunk
         assertEquals("application/offset+octet-stream", postReq.getHeader("Content-Type"))
         assertEquals(firstChunkSize.toString(), postReq.getHeader("Content-Length"))
+        assertTrue("Local file should be deletable after TUS creation-with-upload", localFile.delete())
+    }
+
+    @Test
+    fun chunk_body_propagates_channel_failures() {
+        val localFile = File.createTempFile("tus", ".bin").apply {
+            writeBytes(ByteArray(10) { it.toByte() })
+        }
+        val raf = RandomAccessFile(localFile, "r")
+        val body = ChunkFromFileRequestBody(
+            file = localFile,
+            contentType = null,
+            channel = raf.channel,
+            chunkSize = 5
+        )
+
+        raf.close()
+
+        try {
+            body.writeTo(Buffer())
+            fail("Expected closed channel failure")
+        } catch (expected: ClosedChannelException) {
+            // Expected failure must reach OkHttp so the upload can fail.
+        } finally {
+            localFile.delete()
+        }
     }
 
     @Test