Excel Javascript API : Unable to use any workbook and any other sheet while writing data in Excel is process.

Kishan Vaishnani 6 Reputation points


I have developed an Excel Javascript plugin using the React framework.

The add-in workflow is simple.

  1. Request data from Ui using APIs
  2. Passing entities' column names and authorized API keys
  3. Start writing data into an active Excel sheet by pulling the button.

During the Excel data writing, the whole Excel workbook freezes, and I'm unable to use any other workbook until the data is written.

The maximum amount of data coming from APIs is 5-8K.

Below is the sample code.

try {
  var i = 0;
  // these data are coming from APIs
  var allCompanies =[12,32,33,43,45,66,12,32,10,12,21,90];
  allCompanies.forEach(async _company => {
    // calling APIs for each _docs and writing data for that companies
    await fetchData(_company).then(async (responseRows) => {
      await Excel.run(async (context) => {
        let sheet = context.workbook.worksheets.getActiveWorksheet();
        await context.sync();
        for (let i = 0; i < responseRows.length; i++) {
          // data operations into Exel sheet
		  // creating table, table header, applying Css
          // writting value to each cells
        await context.sync();
} catch (error) {
  console.log("error on appending data into excel " + error);

Any solution will be helpful to me.


A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
1,089 questions
JavaScript API
JavaScript API
An Office service that supports add-ins to interact with objects in Office client applications.
749 questions
Office Development
Office Development
Office: A suite of Microsoft productivity software that supports common business tasks, including word processing, email, presentations, and data management and analysis.Development: The process of researching, productizing, and refining new or existing technologies.
3,046 questions
0 comments No comments
{count} votes