diff --git a/pkg/app/provider/wopi/wopi.go b/pkg/app/provider/wopi/wopi.go
index ba64e614d3a..03ebdee70af 100644
--- a/pkg/app/provider/wopi/wopi.go
+++ b/pkg/app/provider/wopi/wopi.go
@@ -59,6 +59,7 @@ func init() {
 type config struct {
 	IOPSecret           string `mapstructure:"iop_secret" docs:";The IOP secret used to connect to the wopiserver."`
 	WopiURL             string `mapstructure:"wopi_url" docs:";The wopiserver's URL."`
+	PrivateLinkBaseURL  string `mapstructure:"private_link_base_url" docs:";The base URL to generate private links to navigate back from apps."`
 	AppName             string `mapstructure:"app_name" docs:";The App user-friendly name."`
 	AppIconURI          string `mapstructure:"app_icon_uri" docs:";A URI to a static asset which represents the app icon."`
 	AppURL              string `mapstructure:"app_url" docs:";The App URL."`
@@ -140,6 +141,13 @@ func (p *wopiProvider) GetAppURL(ctx context.Context, resource *provider.Resourc
 	q.Add("fileid", resource.GetId().OpaqueId)
 	q.Add("viewmode", viewMode.String())
 
+	privateLinkBaseURl, err := url.Parse(p.conf.PrivateLinkBaseURL)
+	if err != nil {
+		return nil, err
+	}
+	privateLinkBaseURl.Path = path.Join(privateLinkBaseURl.Path, "f", storagespace.FormatResourceID(*resource.GetId()))
+	q.Add("folderurl", privateLinkBaseURl.String())
+
 	u, ok := ctxpkg.ContextGetUser(ctx)
 	if ok { // else defaults to "Guest xyz"
 		if u.Id.Type == userpb.UserType_USER_TYPE_LIGHTWEIGHT || u.Id.Type == userpb.UserType_USER_TYPE_FEDERATED {
@@ -242,10 +250,9 @@ func (p *wopiProvider) GetAppURL(ctx context.Context, resource *provider.Resourc
 			return nil, err
 		}
 		urlQuery := url.Query()
-		// we could improve this by using the UI_LLCC value from the wopi discovery url
-		// https://docs.microsoft.com/en-us/microsoft-365/cloud-storage-partner-program/online/discovery#ui_llcc
-		urlQuery.Set("ui", language)   // OnlyOffice
-		urlQuery.Set("lang", language) // Collabora
+		urlQuery.Set("ui", language)      // OnlyOffice
+		urlQuery.Set("lang", language)    // Collabora
+		urlQuery.Set("UI_LLCC", language) // Office365
 		url.RawQuery = urlQuery.Encode()
 		appFullURL = url.String()
 	}