"Resource not available" error message fixed in MinimServer update 248

[simoncn]

There have been a few recent reports of a message appearing on the MinimServer configuration web page saying "Resource not available: https://minimworld.com/updates/minimserver-2.2.jmupd". When this happens, it is also not possible to activate or deactivate the license.

This problem is caused by an SSL certificate error. It started about 3 weeks ago when the hosting provider for the MinimServer updates and license server made a change to the SSL server certificate for the minimworld.com domain. This change didn't affect most MinimServer installations or the minimworld.com website but it did cause problems with some MinimServer installations running on older levels of Java that weren't able to validate the new SSL certificate. Specifically, the problem affects Synology devices that are running DSM 6.x, DSM 5.x or DSM 4.x and have an Intel or PowerPC processor. It also affects QNAP models TS-109, TS-209 and TS-409.

An issue like this would usually be fixed by releasing a MinimServer update for automatic installation and this fix is now available as MinimServer update 248. The problem in this case is that the devices affected are unable to install updates because this requires an SSL connection to the updates server, so an alternative method of installing this update is needed. The release notes for this update include instructions for how to work around this problem and install the update on affected devices (see this section).

Please post here with any questions about this problem or the solution.