Office Apps Not Opening

Fix Word Fill and Sign Add-in Stuck on Blank Loading Screen

Camila MilosovichCamila Milosovich Nov 5, 2026 869 views

Question details

The user needs to resolve an issue where the Adobe Fill and Sign add-in fails to load within Microsoft Word after transitioning to a new computer.

Fix Word Fill and Sign Add-in Stuck on Blank Loading Screen
Product
Microsoft Word
Device & OS
not provided
Scenario
Attempting to use the Adobe Fill and Sign add-in to process a document on a newly configured computer.
Observed behavior
Clicking the add-in opens a blank screen that remains stuck on a loading state without ever displaying the user interface.
Before you start

Ensure your internet connection is stable and verify that your Microsoft Word document is not protected or marked as read-only before troubleshooting the add-in.

Solution 1Recommended

Check File Size and Document Compatibility

Ensure the Word document meets the strict file size limits supported by the Adobe Sign add-in.

Add-ins frequently fail to load or get stuck on blank screens when the active document exceeds the maximum allowable file size or contains unsupported elements.

1
Test a blank document

Open a completely new, blank Microsoft Word document and click the Adobe Fill and Sign add-in to see if it loads successfully.

2
Verify file size

Right-click your original Word document in File Explorer, select 'Properties', and check its size. Ensure it is 5 MB or smaller.

File Size Limitation: The Adobe Sign add-in only supports Word or PowerPoint files up to 5 MB. If your file is larger, compress the images or split the document.

Sign Documents Natively Using WPS Office

Avoid add-in loading errors and size limitations by using WPS Office. With built-in document signing and PDF tools, WPS allows you to quickly fill and sign files without relying on third-party plugins.

  1. 1. Open your document in WPS: Launch WPS Office and open your Word document (.docx) directly.
  2. 2. Export to PDF: Go to the 'Tools' tab and select 'Export to PDF' to prepare the document for signing.
  3. 3. Sign the document: Open the exported PDF in WPS PDF, click the 'Fill & Sign' option on the toolbar, and easily draw or type your signature.
Native document filling and signing without external add-insFully compatible with Microsoft Word (.docx) formatsBypass third-party add-in size restrictionsLightweight application that runs smoothly on any PC
microsoft office alternative - wps office

Frequently Asked Questions

Why is my Microsoft Word add-in stuck on a blank screen?

This usually happens due to a corrupted Office cache, an unstable network connection, or when the authentication token between Microsoft 365 and the add-in provider expires after migrating to a new computer.

What is the file size limit for the Adobe Sign add-in in Word?

The Adobe Sign add-in supports Microsoft Word and PowerPoint documents up to a maximum file size of 5 MB. Documents larger than this may cause the add-in to fail or freeze.

How do I clear the add-in cache in Microsoft Word?

You can clear the Office cache by navigating to '%LOCALAPPDATA%\Microsoft\Office\16.0\Wef\' in your Windows File Explorer, deleting the contents of the folder, and then restarting Word.

Can I sign a Word document without using third-party add-ins?

Yes, you can export your Word document as a PDF and use built-in PDF signing features found in software suites like WPS Office to sign the document natively.