From the Job Status log (Example from Veritas Labs):
Starting job with params: GlobalAuditJobParams[reportDownloadLocation=, auditStartDate=Sun Oct 29 2023 00:00:00 EDT, auditEndDate=Fri Nov 10 2023 23:59:59 EST]
11/14/2023 08:29:13 Generating Global Audit Report using Criteria : { Audit Entities:[], Audit Start Date:Sun Oct 29 2023 00:00:00 EDT, Audit End Date=Fri Nov 10 2023 23:59:59 EST, Report Format:XLSX}
11/14/2023 08:29:13 Global Audit Report local directory path :\\xx.xx.xx.xx\D$\CW\V102\data\esadb\dataStore_appliance_2_69774556\fileManager\0.14.3.22\jobRun_7346\__fileMgr__tmp\global_audit
11/14/2023 08:29:15 Excel writing failed
11/14/2023 08:29:15 Failed to generate Global audit report, Unexpected exception encountered.: [#80000] Common Services Error : {0} - {1}
11/14/2023 08:29:15 Total time taken to process Global Audit report generator : 2362 msec, Start time: Tue Nov 14 08:29:13 EST 2023, End time:Tue Nov 14 08:29:15 EST 2023
11/14/2023 08:29:15 [#80007] Unexpected exception encountered: com.teneo.esa.common.exception.TeneoRuntimeException: [#80000] Common Services Error : {0} - {1}
11/14/2023 08:29:15 Total time taken to process Global Audit Report: 2372 msec, Start time: Tue Nov 14 08:29:13 EST 2023, End time:Tue Nov 14 08:29:15 EST 2023
11/14/2023 08:29:17 [#80000] Common Services Error : 1.5.2.7346 - Global Audit Report Job has errors - [#80003] Unexpected error
Excel is unavailable due to something in the environment having an open handle on Excel.exe
Rebooting the eDiscovery server(s) releases the handle that is preventing the Global Audit Report from accessing Excel.