#OUTLOOK FOR MAC 2011 SIGNATURE WINDOWS#

issue all Let’s-Encrypt certificates NEWĪfter that the Apple devices had no problems, a restart there was not necessary.

#OUTLOOK FOR MAC 2011 SIGNATURE WINDOWS#

delete the expired X3 certificate in the Windows server certificate store. On macOS, the problem also occurred with Firefox. On all Windows devices there were no problems, with any browser. Issues mit Let’s Encrypt certificate, but that only occurred with macOS and iOS, when retrieved from a Windows server IIS.

On German site heise there is this German comment, which contains some hints. Windows Internet Information Server (IIS) seems to have had problems with iOS devices. In this case, restarting the servers in question fixed the certificate chain – as can be seen from the following. The problem was that the server in question preferred the older Let’s Encrypt certificate. I have received a few comments reporting problems with Exchange Server as well as Windows Internet Information Server (IIS). In the meantime, however, it is clear from reader feedback that devices with iOS 14 or iOS 15, macOS etc. 30, 2021: Will we see trouble with old Let’s Encrypt certificates? However, it was unclear whether this would have an impact – it was assumed that this would only affect very old devices that no longer receive updates (e.g. I had pointed this out in the blog post Sept. Clients that only know the old root certificates will not be able to verify Let’s Encrypt server certificates after that.

As of today, September 30, 2021, some root certificates used by Let’s Encrypt to sign client certificates will lose their validity (expiration of Intermediate R3 on at 19:21:40 GMT – the DST Root CA X3 expires on 14:01:15 GMT).

Outlook for mac 2011 signature