Append Tool NOT working

[ModernElectric]

Have not had a problem, but recently within the past 2 days, the Geoprocessing tool APPEND, will not work. It hangs or freezes or crashes. Doesn't matter if I am using ArcGIS Pro (3.3.1), Python (updating AGOL) or within a data model.

Anyone else have this problem recently and/or in the past and if so, how to fix it?

Causing a lot of problems without this critical tool.

[ClayDonaldsonSWCA]

We have been having issues with this for past 24 hours. I believe it is related to ESRI server/system issues on AGOL.

INC-001547: Asynchronous operations are slow to complete on all service endpoints.

[ModernElectric]

That could most likely explain it. I can use the overwrite feature in ArcGIS Pro to update a Hosted Feature Layer sitting on AGOL. However, that defeats the purpose of the dozens of scripts I have created that we use to keep AGOL updated. 

Basically need to wait for ESRI???

[RobHastings]

I have noticed this same issue with the Append tool. After 20 minutes of the tool running without appending I cancelled the tool, and then after about an hour of the cancel running I closed out of ArcPro with the Task Manager. Thanks for posting this

[Lovely_GraciaAcuna]

Same. I have run the tool for at least an hour already and stucked at 72%, with 201 features. I've cancelled the process and closed ArcGIS Pro. Run the same tool in ArcMap and done in minutes.