Update to the latest version and your personal installation page
Thank you for using Shadow.
We are writing about an issue affecting startup and sign-in on some Windows PCs, a security update, and your personal installation page.
We emailed current users on October 26 with the details and their personal installation page. Please check your email.
Startup and sign-in fix
Some versions of Shadow incorrectly treated differences in PC configuration as a Node.js version mismatch. This prevented processes needed for sign-in from running. If an affected version was installed, the automatic update installer could also fail to work correctly.
Security update
On October 24, Oracle published a security advisory about certificates associated with eMudhra. Private keys belonging to some intermediate certificate authorities were compromised, creating a risk that an impostor HTTPS endpoint could be accepted as legitimate. Oracle released updates that remove related certificate authorities from Java's trust store.
Node.js, which Shadow uses, has also released a fix. The latest Windows installer includes Node.js 22.23.4, with protection that rejects connections using the affected certificates.
Please update using your personal installation page
The previous direct-download links in emails could also be difficult to use when Windows displayed download or installation warnings.
We have prepared a dedicated installation page for you. You can use it to install the latest version yourself, including when automatic updates are unavailable or Shadow will not start.
Please use the personal installation page linked in our October 26 email to update to the latest version.
Windows PC: Shadow Harness
- If Shadow is running, save your work and close it.
- Open the personal installation page linked in the email on your Windows PC.
- Select the installation button under "Shadow Harness."
- Follow the confirmation prompts to complete installation.
- Sign in using the same Google account you registered with.
Shadow Harness is for Windows PCs only.
Android phone: Shadow Link
The same page also offers Shadow Link, an Android app for connecting to your PC, checking notifications, and approving actions. It does not support iPhone or iPad.
To install it, open the same link from the email on your Android phone and select the Shadow Link download button. Open the downloaded APK and follow the prompts.
The page uses your browser's language preferences to display English or Japanese. You can also switch manually using "English / 日本語" at the top right.
Automatic updates at startup will remain available. Keep this page as an alternative way to update if automatic updates fail or Shadow cannot start.
We apologize for the inconvenience, and thank you for updating.