[bug]: Outlook Website Loading Problem

[Marceren]

Is there an existing issue for this?

• I have searched the existing issues

Type

User Script

Web Browser

MS Edge, Firefox, Brave, Google Chrome,

User Script Manager

Tampermonkel

URL

https://outlook.office.com/mail/

What happened?

UTC Date: 2025-07-04T11:00:39.401Z
Client Id: 4E1DFC8938BA433BAD1C7F8DB2F067B7
Session Id: f433ddd6-3490-4fe2-8959-7b74d74d276f
Client Version: 20250627008.04
BootResult: fail
Back Filled Errors: None
err: Error: Duplicated Default Trusted Types policy
esrc: Script
et: ClientError
estack: Error: Duplicated Default Trusted Types policy
at window.trustedTypes.createPolicy (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.AppBoot.m.1cbd5f06.js:16:853088)
at 547941 (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.AppBoot.m.1cbd5f06.js:16:853515)
at A (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mail.runtime.08e2a411.js:1:145)
at 993665 (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.AppBoot.m.1cbd5f06.js:16:853708)
at A (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mail.runtime.08e2a411.js:1:145)
at 824605 (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.AppBoot.m.1cbd5f06.js:16:251996)
at A (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mail.runtime.08e2a411.js:1:145)
at 248970 (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.AppBoot.m.1cbd5f06.js:16:255291)

Steps To Reproduce

Only load the Website, nothing special.
According to ChatGPT:
In short: Magic Userscript+ unintentionally executes the same policy creation of OWA again, which inevitably ends in a “duplicated policy” error.

[magicoflolis]

Fixed as of v7.6.8

The issue was with TrustedTypePolicy found on chrome based browsers. I will rework the TrustedTypePolicy code in the future.

[mcwindy]

I encountered this error even with v7.6.8.

[magicoflolis]

I encountered this error even with v7.6.8.

This might be do to the fact I only excluded outlook.office.com and not *.office.com etc.

For now I would recommend excluding this userscript on *.office.com domains within your userscript manager or switch to the webextension version as it does not injected itself into the page.

https://github.com/magicoflolis/Userscript-Plus?tab=readme-ov-file#download

I plan to rework my TrustedTypePolicy code in the future.

Thank you.

[AuZzii-Xssistant]

I just had the same question regarding outlook.

If outlook is already open and enabled it asked for a force refresh that did not work but if opened in a new tab the script gives the below prompt nonstop without doing anything. Thank you for providing a temporary solution using the extension.

[Magic Userscript+] (make) Failed to set the 'innerHTML' property on 'Element': This document requires 'TrustedHTML' assignment.