# UMUI failing to open on PUMAtest giving error message "Could not connect to PRIMARY server" **URL:** \ **Category:** General\ **Tags:** PUMATest\ **Created:** [12 September 2022 16:27 UTC](https://cms-helpdesk.ncas.ac.uk/t/umui-failing-to-open-on-pumatest-giving-error-message-could-not-connect-to-primary-server/724 "2022-09-12T16:27:42Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![gmann](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/gmann/32/77_2.png) [@gmann](https://cms-helpdesk.ncas.ac.uk/u/gmann)\ **Post date:** [12 September 2022 16:27 UTC](https://cms-helpdesk.ncas.ac.uk/t/umui-failing-to-open-on-pumatest-giving-error-message-could-not-connect-to-primary-server/724/1 "2022-09-12T16:27:42Z")
Dear NCAS-CMS helpdesk, The UMUI was opening fine this morning (from [pumatest.nerc.ac.uk](http://pumatest.nerc.ac.uk)) but when trying just now I am finding the UMUI crashes whilst building the window with the experiments & jobs info. An X-window appears with title “No connection”, and the error message below. Please can yoiu check if pumatest has somehow lost its network connectivity. IOr is there a planned/unplanned maintenance session at the current time?) Thanks for your help with this, Best regards, Cheers Graham Dr. Graham Mann Lecturer in Atmospheric Science School of Earth and Environment University of Leeds Could not connect to the PRIMARY server ([pumatest.nerc.ac.uk](http://pumatest.nerc.ac.uk)). The PRIMARY server ([pumatest.nerc.ac.uk](http://pumatest.nerc.ac.uk)) may be down. The PRIMARY server ([pumatest.nerc.ac.uk](http://pumatest.nerc.ac.uk)) may not be running. There may be a network failure. Select ‘Quit’ to quit the application or, if appropriate select ‘Cancel’ to cancel the command and the system will attempt to continue as though the command had not been tried. Otherwise, if there have been no announcements of outages then PLEASE report to Server Administrators as they may be unaware of the failure Error: couldn’t open socket: connection refused" ---
**Author:** ![gmann](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/gmann/32/77_2.png) [@gmann](https://cms-helpdesk.ncas.ac.uk/u/gmann)\ **Post date:** [12 September 2022 16:28 UTC](https://cms-helpdesk.ncas.ac.uk/t/umui-failing-to-open-on-pumatest-giving-error-message-could-not-connect-to-primary-server/724/2 "2022-09-12T16:28:52Z")
![ScreenShot_ErrorOpeningUMUIonPUMAtest_520pmOn12Sep2022](https://europe1.discourse-cdn.com/flex013/uploads/cms_support/original/1X/f67a8d4b5f1920725bcb4a2880f0f13951194f15.png) ---
**Author:** ![RosalynHatcher](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/rosalynhatcher/32/11_2.png) [@RosalynHatcher](https://cms-helpdesk.ncas.ac.uk/u/RosalynHatcher)\ **Post date:** [13 September 2022 06:49 UTC](https://cms-helpdesk.ncas.ac.uk/t/umui-failing-to-open-on-pumatest-giving-error-message-could-not-connect-to-primary-server/724/3 "2022-09-13T06:49:49Z")
Hi Graham, UMUI had crashed and I have now restarted it. Cheers, Ros. ---
**Author:** ![gmann](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/gmann/32/77_2.png) [@gmann](https://cms-helpdesk.ncas.ac.uk/u/gmann)\ **Post date:** [13 September 2022 09:34 UTC](https://cms-helpdesk.ncas.ac.uk/t/umui-failing-to-open-on-pumatest-giving-error-message-could-not-connect-to-primary-server/724/4 "2022-09-13T09:34:44Z")
Hi Ros, OK, great, thanks. And to confirm, I’ve just tried the UMUI, and it works fine now. Cheers Graham ---
**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/cms_support/original/1X/1fd2411499ffcbc299fe756cd5cdf26e44956558.png) [@system](https://cms-helpdesk.ncas.ac.uk/u/system)\ **Post date:** [13 October 2022 09:34 UTC](https://cms-helpdesk.ncas.ac.uk/t/umui-failing-to-open-on-pumatest-giving-error-message-could-not-connect-to-primary-server/724/5 "2022-10-13T09:34:53Z")
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