![Error during Exchange 2013 CU upgrade from CU20 to CU22 – “The installation source for this product is not available. Verify that the source exists and that you can access it” Error during Exchange 2013 CU upgrade from CU20 to CU22 – “The installation source for this product is not available. Verify that the source exists and that you can access it”](https://anishjohnes.files.wordpress.com/2019/11/error-4.png?w=593)
Error during Exchange 2013 CU upgrade from CU20 to CU22 – “The installation source for this product is not available. Verify that the source exists and that you can access it”
![Error during Exchange 2013 CU upgrade from CU20 to CU22 – “The installation source for this product is not available. Verify that the source exists and that you can access it” Error during Exchange 2013 CU upgrade from CU20 to CU22 – “The installation source for this product is not available. Verify that the source exists and that you can access it”](https://anishjohnes.files.wordpress.com/2019/11/error-1.png)
Error during Exchange 2013 CU upgrade from CU20 to CU22 – “The installation source for this product is not available. Verify that the source exists and that you can access it”
![Exchange server 2013 recovery installation failure | [ERROR] The internal transport certificate for the local server was damaged or missing in Active Directory | Anish Sam Johnes Exchange server 2013 recovery installation failure | [ERROR] The internal transport certificate for the local server was damaged or missing in Active Directory | Anish Sam Johnes](https://anishjohnes.files.wordpress.com/2021/03/new1.png?w=666)
Exchange server 2013 recovery installation failure | [ERROR] The internal transport certificate for the local server was damaged or missing in Active Directory | Anish Sam Johnes
🔮WZor👁️ on Twitter: "⚡️📝Released: July 13, 2021 Exchange Server Security Updates👉https://t.co/GP4ONau8Uw ✔️2019 CU10 SU1 #KB5004780👉https://t.co/9abgVQdYS6 ✔️2016 CU21 SU1 #KB5004779👉https://t.co/CoPU3YvNIn ✔️2013 CU23 SU1 #KB5004778 ...
![How to Install (or Upgrade) Cumulative Update 18 for Exchange Server 2016 # Exchange #Exchange 2016 #Microsoft #mvphour | CheckYourLogs.Net How to Install (or Upgrade) Cumulative Update 18 for Exchange Server 2016 # Exchange #Exchange 2016 #Microsoft #mvphour | CheckYourLogs.Net](https://i2.wp.com/www.checkyourlogs.net/wp-content/uploads/2020/10/100120_2348_HowtoInstal6.png?w=1080&ssl=1)