![Dealing with a Missing Microsoft Exchange Server Auth Certificate that Causes “Federation or Auth certificate not found” Warnings | Alexander's Blog Dealing with a Missing Microsoft Exchange Server Auth Certificate that Causes “Federation or Auth certificate not found” Warnings | Alexander's Blog](https://www.zubairalexander.com/blog/wp-content/uploads/2015/06/ExchangeAuthCert.png)
Dealing with a Missing Microsoft Exchange Server Auth Certificate that Causes “Federation or Auth certificate not found” Warnings | Alexander's Blog
![Michel de Rooij on Twitter: "PSA: There are reports of Jul13 SU breaking OWA/ECP. Likely related to expired "Microsoft Exchange Server Auth Certificate"; renew procedure at https://t.co/Aa0XZqnFFz #MSExchange https://t.co/R5LTt3LiMs" / Twitter Michel de Rooij on Twitter: "PSA: There are reports of Jul13 SU breaking OWA/ECP. Likely related to expired "Microsoft Exchange Server Auth Certificate"; renew procedure at https://t.co/Aa0XZqnFFz #MSExchange https://t.co/R5LTt3LiMs" / Twitter](https://pbs.twimg.com/media/E6STNilXIAUAbCn.jpg)
Michel de Rooij on Twitter: "PSA: There are reports of Jul13 SU breaking OWA/ECP. Likely related to expired "Microsoft Exchange Server Auth Certificate"; renew procedure at https://t.co/Aa0XZqnFFz #MSExchange https://t.co/R5LTt3LiMs" / Twitter
![Solved: Should i renew self-signed exchange certificates on all the servers or should i renew only on one server & import and export same certificate to all of the other servers Solved: Should i renew self-signed exchange certificates on all the servers or should i renew only on one server & import and export same certificate to all of the other servers](https://filedb.experts-exchange.com/incoming/2018/04_w17/1306712/mbx1.jpg)