threepwood

This happens to me on Firefox & Thunderbird whenever there is an ESET NOD32 software update. The solution (same as Marcos wrote above) is detailed on Mozilla's support page: https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message#w_other-solutions

Is this fixed on the upcoming/released (349) update? thanks.

Marcos, can this RDP problem also be affecting NOD32 Antivirus v9? I've been having problems with a network printer when printing from Microsoft Edge or from Windows 10 Photo Viewer and yesterday I downgraded to NOD32 Antivirus v8 and printing works great now.

Same thing has been happened to me on 2 workstations that have NOD32 Antivirus (9.0.318.0) installed on Windows 10. Printing a small .jpg or .pdf file, be it from Google Chrome or File Explorer causes havoc on the printer spooler and takes forever to print. Rebooting, pausing NOD32 protection and printing the same file again works normally as should (almost instantaneously). Just hope support can have a look at this since this is really annoying.