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Srinivas Reddy Annadi 23Srinivas Reddy Annadi 23 

core.apexpages.exceptions.ApexPagesGenericException: system.security.NoAccessException: Update access denied for abc__c, controller action methods may not execute

I am facing the issuse related to guest user access for winter 21 release and I removed the edit,delete,viewall and modify all permissions from guest user profile and I update the record using without sharing class and added 'ignoreEditPermissionForRendering=true' in the visualforce page for rendering the inputfield for editing and after I am clicking the button and it throws the exception as 'core.apexpages.exceptions.ApexPagesGenericException: system.security.NoAccessException: Update access denied for abc__c, controller action methods may not execute' and can you please suggest what can i do for avoiding that error and it is urgent issue to fix in the org and thanks in advance.

Thanks & Regards
Srinivas 
AbhishekAbhishek (Salesforce Developers) 
https://salesforce.stackexchange.com/questions/99067/system-security-noaccessexception-update-access-denied-for-recordtype

Check this.

And for further reference, you can check this too (http://salesforcesolution.blogspot.com/2012/02/systemsecuritynoaccessexception-update.html).

I hope helps.
Srinivas Reddy Annadi 23Srinivas Reddy Annadi 23
Hi Abhishek,

Thanks for providing that links but it not works for our code and can anyone suggest what is the best way to avoid that error.

Thanks & Regards
Srinivas Reddy