Requested registry access is not allowed

Question

I m writing a tweak utility that modifies some keys under HKEY CLASSES ROOT   All works fine under Windows XP and so on  But I m getting error Requested registry access is not allowed under Windows 7  Vista and 2008 I guess too   How should I modify my code to add UAC support

User · Accepted Answer

app manifest should be like this    lt  xml version  1 0  encoding  utf-8   gt   lt asmv1 assembly manifestVersion  1 0  xmlns  urn schemas-microsoft-com asm v1  xmlns asmv1  urn schemas-microsoft-com asm v1  xmlns asmv2  urn schemas-microsoft-com asm v2  xmlns xsi  http   www w3 org 2001 XMLSchema-instance  gt      lt assemblyIdentity version  1 0 0 0  name  MyApplication app    gt      lt trustInfo xmlns  urn schemas-microsoft-com asm v2  gt         lt security gt            lt requestedPrivileges xmlns  urn schemas-microsoft-com asm v3  gt               lt requestedExecutionLevel level  requireAdministrator  uiAccess  false    gt            lt  requestedPrivileges gt         lt  security gt      lt  trustInfo gt   lt  asmv1 assembly gt

User · Answer

This issue has to do with granting the necessary authorization to the user account the application runs on  To read a similar situation and a detailed response for the correct solution  as documented by Microsoft  feel free to visit this post  http   rambletech wordpress com 2011 10 17 requested-registry-access-is-not-allowed

User · Answer

You can t write to the HKCR  or HKLM  hives in Vista and newer versions of Windows unless you have administrative privileges  Therefore   you ll either need to be logged in as an Administrator before you run your utility  give it a manifest that says it requires Administrator level  which will prompt the user for Admin login info   or quit changing things in places that non-Administrators shouldn t be playing   -

User · Answer

If you don t need admin privs for the entire app  or only for a few infrequent changes you can do the changes in a new process and launch it using   Process StartInfo UseShellExecute   true  Process StartInfo Verb    runas     which will run the process as admin to do whatever you need with the registry  but return to your app with the normal priviledges   This way it doesn t prompt the user with a UAC dialog every time it launches

User · Answer

I was trying the verb    runas   but I still was getting UnauthorizedAccessException when trying to update registry value  Turned out it was due to not opening the subkey with writeable set to true   Registry OpenSubKey  KeyName   true     Cannot write to Registry Key  getting UnauthorizedAccessException

User · Answer

You Could Do The same as abatishchev but without the UAC    lt assembly manifestVersion  1 0  xmlns  urn schemas-microsoft-com asm v1  gt   lt assemblyIdentity version  1 0 0 0  name  MyApplication app   gt    lt trustInfo xmlns  urn schemas-microsoft-com asm v2  gt      lt security gt       lt requestedPrivileges xmlns  urn schemas-microsoft-com asm v3  gt       lt  requestedPrivileges gt       lt  security gt     lt  trustInfo gt   lt  assembly gt

User · Answer

As a temporary fix  users can right click the utility and select  Run as administrator

[c#] Requested registry access is not allowed

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