OCLC has announced a planned infrastructure upgrade that will affect all services on Saturday, December 20th starting at 3 PM CDT, through Sunday, December 21st, at 3 AM CDT. All OCLC services including Connexion, WorldShare, InterLibrary Loan, and WorldCat searching will be unavailable during this maintenance window.
Read OCLC's announcement here: UPDATE: Planned Infrastructure Upgrades, Impacting all Regions, 20-21 December 2025 (login required)
A complete list and status of impacted services is available on OCLC’s System Status Dashboard.
Given the scope and duration of the downtime, a banner in Aspen may be appropriate to communicate to your patrons. This will be a local decision, but feel free to use the following statement:
"Links from the SWAN catalog to WorldCat are temporarily unavailable. Functionality is expected to be restored Sunday, December 21st. We apologize for the inconvenience."