Please check the workflow logs, as this issue also comes when a particular long-running query goes to the hung stage due to some locks or DB issue at that point, and once the query is killed or workflow is stopped issue will be resolved.

Hi Sheetal,If you cannot see logs from UI, you can reach out to the Adobe Campaign support team to check for detailed logs from the backend and share them with you.  

You can reach out to the Adobe Campaign support team to check if this is due to some load balancer etc., configuration issues.

No, It is not possible as SMTP is specific to adobe campaign plateform

Hi Zuzana,In ACS you can only build custom reports based on existing metrics. Three is already an enhancement request planned to include this in future releases. https://experienceleaguecommunities.adobe.com/t5/adobe-campaign-standard/click-to-open-rate-on-report/td-p/423283 https://experienceleague...

Your current setup will not be impacted until you ensure that you are using the correct credentials in API calls.https://experienceleague.adobe.com/docs/campaign-standard/using/working-with-apis/about-campaign-standard-apis/setting-up-api-access.html?lang=en https://experienceleague.adobe.com/docs/c...

Hi Yash,Who has provided the credential to you ? You can reach out to the sandbox support team "Solution Partner Helpdesk <spphelp@adobe.com>" for any sandbox access-related issues.

ACC is enterprise software, and it is provisioned based on contract.  For testing purposes, development environments and sandbox are provisioned, but contractual agreement is also required. You can reach out to the Customer Success Manager or Partner manager of Adobe for more details.

What is your currect server and console build ? Were there any recent ACC upgrade done 

This looks like a temporary network error.  Please try to clear the cache and check that it resolves the issue? Are all the users facing this issue, or is it specific to some users?