SharePoint Pain

Applies to SharePoint 2016; not tested on other versions  Symptoms   After changing the farm account password in AD, SharePoint fails to update the password with the “Use existing password” option in Central Admin:   Error Message:   Error deploying administration application pool credentials. Another deployment may be active. An object of the type Microsoft.SharePoint.Administration.SPAdminAppPoolCredentialDeploymentJobDefinition named “job-admin-apppool-change” already exists under the parent Microsoft.SharePoint.Administration.SPTimerService named “SPTimerV4”. Rename your object or delete the existing object.   Screenshot:   Findings :   ·         Correlation ID in ULS shows misleading errors as none of reported services are configured for SharePoint: o    Error updating the account password for process identity Id c3c6d96f-3994-4630-8c03-f019b0f22757, please fix manually. An object of the type Microsoft....

Symptoms   On Central Admin, Health Analyzer shows "The timer service failed to recycle" warning:   Diagnosis The Timer Service Recycle job was blocked by other running Timer jobs, such as: The running jobs that block the Recycle job could be stuck in the running mode and need to be verified first. Remedy 1.       Make a note of the Failing Servers in the report and run the Timer Service Recycle Job from Central Admin > Monitoring > Job Definitions > Timer Service Recycle .  ( Direct URL:  https://<caDomainName>/_admin/JobEdit.aspx?JobId=<guid>) Click the "Run Now" button. This will kick off the Job across all servers in the farm.  2.       Go to the Running Jobs page (https://<caDomainName>/_admin/ServiceRunningJobs.aspx) and wait until the Job finishes. It will take several minutes. 3.       Check the Job History page (https://<caDomainName>/_admin/Tim...

Symptoms Office Online Server fails to open Office documents and leaves this error in the Office Web Apps event logs:   System.ServiceModel.Security.SecurityNegotiationException: Could not establish trust relationship for the SSL/TLS secure channel with authority '<servername>:809'. ---> System.Net.WebException: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. ---> System.Security.Authentication.AuthenticationException: The remote certificate is invalid according to the validation procedure.     Diagnosis IIS sites have the unsupported HSTS configuration: HSTS ==> “ Redirect Http to Https ” It needs to be enabled for the IIS security, but it breaks the Office Online functionality. Remedy Uncheck (disable) the “ Redirect Http to Https ” checkbox for both HTTP80 and HTTP809 sites: The “ Enable ” and “ IncludeSubDomains ” options do not cause the outage. Therefore, they can be left enabled.  No ...