threema-ch / threema-web

The Threema Web application.

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"Uncaught ReferenceError: WebAssembly is not defined" in Microsoft Edge

cluick opened this issue · comments

Bug Description

After upgrading Microsoft Edge Browser to version 104.0.1293.63 (64-bit Windows) I cannot open Threema-Web any more. Before I used Threema Web in MS Edge for several months without problems. When I open https://web.threema.ch the following text is displayed:

Error: Browser not supported
You are using a browser without WebAssembly support. Please upgrade to the latest version of a [supported browser]> > >(https://threema.ch/faq/web_requirements).

The browser console shows error "Uncaught ReferenceError: WebAssembly is not defined" (complete log attached)

web.threema.ch-1661248663912.log

I resetted the browser configuration and the browser cache but nothing helped.

Steps to Reproduce (for bugs)

  1. Update edge to version 104.0.1293.63

Potential Solution

Your Environment

  • Threema Web version: n/a - I cannot open the page - no version number is displayed neither in the browser nor in the browser console
  • Threema App version: 4.83 Build 3000755 Google Play
  • Browser name and version: MS Edge 104.0.1293.63 64-bit
  • Computer operating system and version: Windows 10 Pro; 10.0.19044 Build 19044; 64 bit
  • Smartphone operating system and version: Android 12

Could it be the "Enable security mitigations for a more secure browser experience" setting?

Yeah, you are right. Disabling this option will make Threema-Web working again. Thank you! 🙏