Member Avatar for chunkmartinez

help!. I screwed up one day when i denied everything, inluding my system to the registry key 'CLSID' in red edit with the 'permissions' option, now when i try to start up my system doesnt get past the logonui part, because of the permissions crap i set. So does anyone know how to like manually edit the registry or something, cuz i cant even touch it anymore.

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Good to hear this was fixed for , and thanks to for pointing to recovery options. For anyone else who runs into a situation where registry ACLs prevent a normal sign-in, here is a compact, practical recovery workflow and a few prevention tips that were not covered in the thread.

If the machine will not let you log on, use the Windows recovery environment (install media or the built-in recovery options). Open a Command Prompt and make a file backup of the offline registry hives before editing them (example copies the SYSTEM hive to a safe place):

copy C:\Windows\System32\config\SYSTEM C:\Temp\SYSTEM.bak

Then run regedit from that same command prompt. Select HKEY_LOCAL_MACHINE (or HKEY_USERS), use File -> Load Hive and point at the offline hive file you backed up. Give it a temporary name, then right‑click that loaded key and adjust Ownership and Permissions (add Administrators and SYSTEM with Full Control rather than using blanket Deny). After changes, use File -> Unload Hive and reboot.

If that is not feasible, try System Restore from WinRE or use an offline tool (SubInACL or similar) from alternate media to repair security descriptors — only after making a backup. As a last resort on systems that support it, resetting security descriptors to defaults via the OS security configuration tool can repair widely damaged ACLs; that is a blunt instrument and should be used with caution.

Preventive practices: export keys before editing, create a restore point, test changes in a VM, and avoid broad Deny permissions (prefer specific Allow or remove entries). If unsure, document the exact hive and key you plan to change and get help rather than applying global permission changes.

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Member Avatar for matt.sherif

when your system boots, hold down F8 and try last known good configuration, this may help reset your registry, and for furture DONT MESS WITH THE REGISTRY!

Member Avatar for chunkmartinez

Tried it.

Besides my problem is resolved anyhow

Thanks!

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