diff --git a/changelog/unreleased/bugfix-external-apps-by-shares b/changelog/unreleased/bugfix-external-apps-by-shares
new file mode 100644
index 00000000000..d357a01c92c
--- /dev/null
+++ b/changelog/unreleased/bugfix-external-apps-by-shares
@@ -0,0 +1,8 @@
+Bugfix: External apps by shares
+
+Opening shares in "Shared with me" section was broken. We have added property `mimeType` by the build of a shared resource, so that the external apps can be found for it. 
+
+We fixed passing the fileId property for the context actions.
+
+https://github.com/owncloud/web/pull/5907
+https://github.com/owncloud/web/issues/5906
diff --git a/packages/web-app-files/src/components/FilesList/ContextActions.vue b/packages/web-app-files/src/components/FilesList/ContextActions.vue
index e8702ad4762..038d87cc144 100644
--- a/packages/web-app-files/src/components/FilesList/ContextActions.vue
+++ b/packages/web-app-files/src/components/FilesList/ContextActions.vue
@@ -9,7 +9,7 @@
         <oc-button
           appearance="raw"
           class="oc-text-bold"
-          @click="$_fileActions_openLink(app.name, item.id)"
+          @click="$_fileActions_openLink(app.name, item.fileId)"
         >
           <img :src="app.icon" :alt="`Icon for ${app.name} app`" class="oc-icon oc-icon-m" />
           <span class="oc-files-context-action-label">{{ 'Open in ' + app.name }}</span>
diff --git a/packages/web-app-files/src/helpers/resources.js b/packages/web-app-files/src/helpers/resources.js
index 514d5149a72..0c4eb64e9c1 100644
--- a/packages/web-app-files/src/helpers/resources.js
+++ b/packages/web-app-files/src/helpers/resources.js
@@ -174,6 +174,7 @@ export function buildSharedResource(share, incomingShares = false, allowSharePer
     id: share.id,
     fileId: share.item_source,
     type: share.item_type,
+    mimeType: share.state === 0 ? share.mimetype : '',
     isFolder,
     sdate: share.stime * 1000,
     indicators: []
diff --git a/packages/web-app-files/tests/unit/components/FilesList/ContextActions.spec.js b/packages/web-app-files/tests/unit/components/FilesList/ContextActions.spec.js
index 320dbfa6dd9..f61e994692e 100644
--- a/packages/web-app-files/tests/unit/components/FilesList/ContextActions.spec.js
+++ b/packages/web-app-files/tests/unit/components/FilesList/ContextActions.spec.js
@@ -249,6 +249,7 @@ function getWrapper(route, { filename, extension, type = '', mimeType }, availab
     propsData: {
       item: {
         id: 'a93f8adf==',
+        fileId: 'a93f8adf==',
         name: filename,
         path: type === 'file' ? `/${filename}.${extension}` : `/${filename}`,
         mimeType,