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During our monthly patching, our patch engineer installed SharePoint security updates accidentally on SharePoint which were part of SharePoint 2013 Jan 2019 CU. Its been a week since it is been installed and it is on Prod. Since Jan 19 CU is very latest and hence we dont want to take a risk of installing them on Prod straight away.

What could be the best remediation plan here? (Is it a good idea to install the same security updates on staging and test application, by doing so we might spoil staging farm intentionally.) or wait for some months and go for a complete CU install.

  • which security updates they installed? if you are on June 2019 CU thats mean you may already have those installed. – Waqas Sarwar MVP Jan 25 at 13:46
  • We are currently on Nov 17 CU, the security updates that got installed belong to Jan 19 CU. – Achiever SP Jan 25 at 13:48
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I dont think you can uninstall it. In this situation, i would complete the patching process. Run the config wizard on all server and complete the patch.

I would also do the same on the lower environment as well because your prod is now (may be) higher build number.

  • But Jan 19 CU is very latest, is ok to patch it after 2 months on Prod? – Achiever SP Jan 25 at 14:15
  • you can wait for the CU but as you already installed the Security fix in Prod, i would match the same in lower farm. – Waqas Sarwar MVP Jan 25 at 14:24

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