Import Patch Data for Windows (PMImport) failed to download.
Timeout Errors (504 Gateway Timeout)
Environmental / configuration issues that slow down or prohibit the PMImport from initializing or finishing.
Work through the following steps to troubleshoot the failing download for the .cab file of the Patch Management Import. The current PMImport version can be found on HOWTO32527.
Please see KM: HOWTO7761 for the process to create a custom Automation / Notification Policy that will send an email if the 'Import Patch Data for Windows' fails.
Advisory: If the PMImport is taking an abnormally long time to complete (provided the currently created Software Update Policies count [slows down the Revised / Superseded process] isn't too high, or the number of languages and vendors listed isn't too high, for that will need the alloted time to run and complete for those settings); implement the updated database items outlined on KM: TECH46342 (PMImport_Deadlock_Fix.zip and PMImport_Optional_PerformanceEnhancements.zip). Furthermore, please review a run of the SMP Diag Tool found on KM: TECH202997, for that will also help isolate configurations that could help with performance.
Patch Management Solution 7.x and 8.x