QNAP myQNAPcloud: Renew the SSL Certificate After the Deadline
Reviewed November 14, 2026. Some QNAP-NAS owners with an older myQNAPcloud certificate obtained from QNAP are seeing browser warnings after the deadline or can no longer connect using apps such as Qfile and Qsync. This is initially a certificate problem, not proof of a break-in. QNAP recommends a specific update of the SSL certificate app and a check method that can be used to confirm a renewed certificate.
Key takeaway
If you obtained a myQNAPcloud certificate directly from QNAP and it was issued before November 1, 2026, 00:00 UTC, update the SSL Certificate app to version 2.2.80 or later in the App Center. Then keep the NAS connected to the internet and allow up to four hours for the automatic renewal. Then check the certificate using your myQNAPcloud address in a private browser window. Don't simply click away a certificate warning: an outdated certificate will not be renewed.
Who is affected by the change?
TWCA, the certification authority behind the relevant myQNAPcloud certificates, has changed its intermediate certificate chain. The old interim certificate was revoked on the announced date of November 5, 2026 at 16:00 UTC. This can cause older certificates issued under it to appear untrustworthy. TWCA describes the occasion as an adaptation to international certificate requirements. According to TWCA, this is not an attack on QNAP-NAS or an indication of stolen private keys.
QNAP narrows down the affected case: This refers to myQNAPcloud certificates that were obtained from QNAP and issued before November 1, 2026, 00:00 UTC. According to QNAP, Let's Encrypt certificates, self-uploaded certificates and the default certificate of the NAS are not affected. myQNAPcloud certificates issued from November 1st at 00:00 UTC also already use the new chain.
Affected and unaffected certificates
| Certificate type | Assessment | Next step |
|---|---|---|
| Purchased from QNAP; issued before 1 Nov 2026 00:00 UTC | Affected | Update SSL Certificate to 2.2.80+ and verify renewal |
| Purchased from QNAP; issued on/after 1 Nov 2026 00:00 UTC | New chain according to QNAP | Check the issue date in the browser |
| Let’s Encrypt | Not affected by this change | Continue the normal expiry and renewal routine |
| User-uploaded or QNAP default certificate | Not affected by this change | No switch through the QNAP app is documented for this certificate |
Renew and verify the certificate
- Check installed app version: Log in to NAS, open the App Center and search “SSL Certificate”. Update to version 2.2.80 or newer. QNAP lists this version for QTS, QuTS hero, QuTScloud and QVP.
- Wait for automatic issuance: Leave the NAS online. After the app update, it automatically requests a new certificate and installs it within 0 to 4 hours. During installation, the web connection may be interrupted for a few seconds.
- Check via the correct address: Open your actual myQNAPcloud domain in a private or incognito window, not the local IP address. View the certificate details in the browser and check the issue date. It should be on or after November 1, 2026, 00:00 UTC. As a more precise additional check, QNAP mentions a Authority Key Identifier that begins with “93:44:9A:89”.
The deadline is stated in UTC. Therefore don't just compare the local time on your computer with the issuing time shown in the certificate. QNAP also points out that the same issuer name alone does not reliably distinguish the old and new intermediate certificate chains.
If the warning remains
After the update, wait the full four hours and check the app version, internet connection and certificate date again. QNAP lists additional reasons why automatic renewal may not occur: The certificate has expired or is assigned to another NAS; In addition, the app may be older than version 2.2.80. If the old issue date remains for more than four hours despite the current app and an existing internet connection, contact QNAP support. For "ERR_CERT_REVOKED" or a similar warning, you should not consider the connection repaired until the browser displays a valid renewed certificate.
This certificate conversion must be distinguished from a NAS vulnerability. Our separate post on Plex2Shell on QNAP addresses a different issue in the Plex media server application, not the myQNAPcloud certificate chain.
Frequently asked questions
Is the certificate warning proof that my NAS was hacked?
No. This warning alone does not prove a break-in. QNAP and TWCA describe a change to the certificate chain and a need for renewal. It says nothing about further security events on your specific NAS.
What should I do if I update the app after the deadline?
QNAP says renewal is still possible after the deadline. Update “SSL Certificate” to 2.2.80 or newer, keep NAS online and wait up to four hours, then check the new issue date.
Can I simply bypass the browser warning?
This does not solve the certificate cause and does not confirm that you are connected to the desired NAS. Update the app and then verify the certificate details before you consider access OK again.
How do I identify the new certificate chain?
QNAP recommends the issue date from November 1, 2026, 00:00 UTC. Optionally, you can check the Authority Key Identifier: According to QNAP, the new chain begins with “93:44:9A:89”. Do not rely solely on the visible name of the certification authority.
Sources and methodology
Checked on November 14, 2026. The affected certificate types, app version and checking steps were compared against QNAP's FAQ and its instructions after the deadline. We checked the change of the intermediate certificate and the certificate standard using TWCA information. These instructions do not recommend manual intervention in certificate files and do not replace the specific QNAP release for the respective NAS.
- QNAP: current instructions for renewal after the deadline
- QNAP: affected certificates and checking in the browser
- QNAP: Note on app version 2.2.80
- TWCA: English Certificate Chain Renewal Notice
- TWCA: Background to adjusting the certificate serial numbers
Video check: We searched for an official QNAP video specifically covering SSL Certificate 2.2.80 and this renewal process. We found no video that adds practical clarity beyond QNAP’s current illustrated instructions, so this post does not embed one. Author: TechDesk PE Digital.Networks.