SSL certificate revocation: how to keep your myQNAPcloud SSL certificate working on your QNAP NAS

Your NAS is affected if it uses a myQNAPcloud SSL certificate that:

• was purchased from QNAP for a domain such as xxxx.myqnapcloud.com or xxxx.mycloudnas.com, and
• was issued before November 1, 2026, 00:00 UTC.

The following certificates are not affected:

• Let's Encrypt certificates
• Certificates you uploaded yourself
• The default self-signed certificate on the NAS

To check your certificate, see How do I check in my browser whether my myQNAPcloud SSL certificate is new or old?

Update the SSL Certificate app to version 2.2.80 or later. The update is available for QTS, QuTS hero, QuTScloud, and QVP.

1. Log in to your NAS.
2. Open App Center.
3. Find SSL Certificate.
4. Click Update.

After the update, your NAS automatically requests and installs a new certificate within 0 to 4 hours. You do not need to do anything else.

The wait time is random, so that many devices do not send requests to the certificate authority at the same time.

• Keep your NAS connected to the Internet during this time.
• When the new certificate is installed, web connections to the NAS may drop for a few seconds. This is normal.

If you need the certificate replaced urgently, contact QNAP Customer Service.

The certificate is not replaced automatically in the following cases:

If none of these apply and more than 4 hours have passed since the update, contact QNAP Customer Service.

You can check two things in the certificate details:

Checking the issue date is enough for most users. The Authority Key Identifier is a more precise check.

Before you start

• Open your NAS using your myQNAPcloud domain, for example https://yourname.myqnapcloud.com. If you open it with an IP address, the browser shows a different certificate.
• Use a private or incognito window, so the browser shows the certificate your NAS is using now.

Google Chrome or Microsoft Edge

1. Open a new incognito window (Edge: InPrivate window). Press Ctrl+Shift+N on Windows, or Command+Shift+N on macOS.
2. Enter your myQNAPcloud domain in the address bar, for example https://yourname.myqnapcloud.com, and press Enter.
3. Click the icon on the left side of the address bar. Depending on the version, it looks like two sliders or a lock. If the address bar shows Not secure, click that instead.
4. Click Connection is secure (or Your connection to this site isn't secure).
5. Click Certificate is valid (or Certificate is not valid). In Edge, click the certificate icon in the upper-right corner of the panel.

Chrome: click the site information icon, then Connection is secure, then Certificate is valid

6. The Certificate Viewer window opens. On the General tab, find Validity Period and check the Issued On date.

Chrome Certificate Viewer, General tab, showing the Issued On date under Validity Period

Optional: check the Authority Key Identifier

1. In the Certificate Viewer, click the Details tab.
2. Under Certificate Hierarchy, select the last item (your myQNAPcloud domain).
3. Under Certificate Fields, expand Extensions and select Certificate Authority Key Identifier.
4. Check the value under Field Value, for example Key ID: 93 44 9A 89 ....

Chrome Certificate Viewer, Details tab, showing the Certificate Authority Key Identifier value

Mozilla Firefox

1. Open a new private window. Press Ctrl+Shift+P on Windows, or Command+Shift+P on macOS.
2. Enter your myQNAPcloud domain in the address bar and press Enter.
3. Click the lock icon on the left side of the address bar.
4. Click Connection secure (or Connection not secure), then click More information.
5. In the Page Info window, on the Security tab, click View Certificate. A new browser tab opens. Each certificate in the chain has its own tab at the top of the page.
6. Make sure the first tab (your myQNAPcloud domain) is selected.
7. Under Validity, check the Not Before date.
8. Optional: scroll down to Authority Key ID and check the Key ID value.

Firefox certificate page, showing Not Before under Validity and the Authority Key ID

Safari (macOS)

1. Open a new private window. Choose File > New Private Window, or press Shift+Command+N.
2. Enter your myQNAPcloud domain in the address bar and press Return.
3. Click the lock icon in the address bar, then click Show Certificate.
4. In the certificate list, select the last item (your myQNAPcloud domain).
5. Click the arrow next to Details to expand it.
6. Check the Not Valid Before date.
7. Optional: scroll down to Authority Key Identifier and check the Key ID value.

Safari certificate window, showing Not Valid Before and the Authority Key Identifier

What the results mean

No. myQNAPcloud SSL certificates issued on or after November 1, 2026, 00:00 UTC are issued under TWCA's new intermediate certificate and are not affected by the revocation.

We still recommend updating the SSL Certificate app to version 2.2.80 or later, so that your NAS installs the complete certificate chain and all apps can connect normally.

You can still update the app after the deadline. After the update, your NAS replaces the certificate automatically within 0 to 4 hours.

Until the new certificate is installed:

• Browsers will show a security warning when you connect to your NAS through your myQNAPcloud domain.
• Qfile, Qsync, and other apps that connect through your myQNAPcloud domain may fail to connect.

To avoid these problems, update before the deadline.