QNAP TVS-472XT 4-Bay NAS Enclosure - Manual (Page 337)

A digital signature is considered valid if it meets the following criteria.
• The digital signature has not been tampered with.
• The digital signature has not expired.
• The digital signature is certified by QNAP.
Enabling Installation of Apps without Valid Digital Signatures
Warning
A valid digital signature ensures that an application was created by QNAP or a QNAP-
trusted publisher. It also ensures that the app has not been maliciously tampered with.
Installing apps without valid digital signatures may expose your NAS to security risks.
QNAP shall not be held liable for any damages, data loss, or security vulnerabilities
resulting from the installation and use of such apps.
1. Open App Center.
2.
Click on the toolbar.
The Settings window appears.
3. Go to General.
4. Select Allow installation of applications without a valid digital signature.
Important
App Center does not allow the installation of apps with tampered digital signatures even when
this setting is enabled.
5. Click Apply.
QTS 4.4.x User Guide
App Center 336