Vcenter Server 5.5 Certificate Expired Jun 2026

Before you start replacing files, confirm which certificate has lapsed. Web Client Check : If you can still log in, navigate to Home > Administration > Certificate Management to view expiration dates. Manual Check : For Windows-based installs, check the C:\ProgramData\VMware\VMware VirtualCenter\SSL folder. Open the

If the certificate manager GUI fails (common on corrupted 5.5 installs), use the : vcenter server 5.5 certificate expired

Recovering an expired vCenter 5.5 is a multi-stage operation. These steps assume vCenter 5.5 is installed on a Windows Server (the typical deployment, as the vCSA 5.5 was less common). Before you start replacing files, confirm which certificate

An expired certificate in vCenter Server 5.5 is not a death sentence for your virtual infrastructure, but it is a serious incident. By systematically regenerating the Machine SSL certificate and the STS token certificate, you can restore full functionality within an hour. However, the repeated need to perform these manual steps underscores the age and fragility of vCenter 5.5. Treat this event as the final warning: plan your migration to a modern vCenter version immediately, where certificate lifecycle management is no longer your problem to solve manually. Open the If the certificate manager GUI fails