ESRI update service is temporarily unavailable

[RBCopland]

When I check for updates in ArcGIS Pro it always says 'The ESRI update service is temporarily unavailable' (been trying for 2-3 weeks) I'm on 3.1.0 so there are updates available. I'm signed in to our organization and my co-worker does not have this issue.

[RoggerCorrea]

Having this issue as well, any news?

ArcPro 3.4.3

[George_Thompson]

The update service is now working with the release of the 3.5.1 patch yesterday.

[Alex_755]

The short version is that I manually upgrade to 3.5.1 and ArcGIS Pro froze three (3) times in the hours following the upgrade. I am reverting back to 3.4.x today. Supplemental notes below for anyone who may be interested.

Notes RE: upgrade to ArcGIS Pro 3.5.1

- The update service remained unavailable through yesterday (6/4/2025).

- ArcGIS Pro 3.5 + Patch 1 (3.5.1) downloaded from My Esri. 

- Uninstalled ArcGIS Pro 3.4.x

- Installed ArcGIS Pro 3.5

- Installed Patch 1 (3.5.1)

- ArcGIS Pro 3.5.1 froze three (3) times and required a force-close via Task Manager > End Task yesterday afternoon.

- ArcGIS Pro 3.5.1 froze during the following scenarios / actions: 1) opening a feature class attribute table or 2) Switching versions via the Change Version option in the Versioning toolbar. Enterprise geodatabase on SQL Server.

It would be interesting to learn if anyone else is experiencing a similar issue with 3.5.1. I hope this note is helpful.