SharePoint 2010 CU and securtiy patch upgrade Issue

Issue : 

I faced as mentioned after installing the SP2 patch and trying to run PSConfig command. I have done a fair bit of patching but never encountered this issue. The PSConfig failed and referred to the upgrade logs as usual to find the error. The upgrade log error listed below was cryptic and did not provide any direct information on what was causing it.

Resolution : 

Error in configuration wizard while trying to add new SharePoint Server to an existing Farm [Scale out] after reset the Farm passphrase

Fixed with below refernce 

http://blogs.msdn.com/b/fabdulwahab/archive/2011/10/25/error-in-configuration-wizard-while-trying-to-add-new-sharepoint-server-to-an-existing-farm-scale-out-after-reset-the-farm-passphrase.asp

2. Null exceptions

3 : Timer job filed

4. Decided to installation SP2 in all servers with sp2 language packs

·         Installed SP2  Updates on WFE2  and APP Server

·         Ran Product Configuration Wizard and it failed

·         Tried PSConfig.exe -cmd upgrade -inplace b2b –wait  - This too failed at the last step

·         Tried psconfig -cmd upgrade -inplace b2b –force – this too failed at the last step

·         IISRESET to both SharePoint Servers

·         Restarted SharePoint Timer Service

·         Restarted SharePoint Search Service

·         Clear Config Cache on all the  servers  set 1 as a cache

·         Ran PSConfig.exe -cmd upgrade -inplace b2b -force -cmd applicationcontent -install -cmd installfeatures – this one failed at the last step

That issue was with respect to Web Application, At the end we Deleted the Web App and Recreated it, Issue got resolved, and then PSCONFIG Works like.