My python code is below. Online guides and Stack Overflow posts suggest this should work, but it doesn’t seem to. When I change the registry, it does a new get to confirm the change was made properly and, according to that result, it shows that the value IS changing. Additionally, if I kill the Flask server and restart it, the page shows the change as well

But I can’t confirm the changes in the actual registry. When I check ComputerHKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionContentDeliveryManager the SubscribedContent-310093Enabled value never changes (yes, I’m pressing f5 to reload… even tried closing and reopening Regedit).

The code thinks it changed something though. If I click the button to toggle the setting, kill the flask server, and re-run, it shows the opposite setting (weirdly I have to reload the actual flask server and can’t just reload the webpage).

What am I doing wrong?

from flask import Flask, render_template, request, jsonify
import winreg

app = Flask(__name__)

fixes = {
    "welcome": {
        "pref_name": "WelcomeExperienceAfterEveryDamnedUpdate",
        "img": "graphics/windows_welcome.png",
        "title": "Disable 'Welcome to Windows' after updates",
        "snark": """
            Another volley in Microsoft's cloying desperation to trick you into picking Edge as your browser; the Welcome to Windows screen that shows up after updates is clearly intended into 
            confusing you into selecting their browser (and other options that benefit Microsoft) instead of leaving your crap alone... the way you already set it.
            """,                
        "description": """
            On major updates to Windows, it shows you the Welcome Experience again in an attempt to give you a second chance to do things their way. If you don't need the nag, 
            click this fix to disable this obnoxious behavior.
            """,
        "tags": ["#Windows", "#Update", "#Nags", "#PweaseUseEdgeSenpaiUwU", "#TrickGrandma"],
        "reg_fix": {
            "key_path": r"SOFTWAREMicrosoftWindowsCurrentVersionContentDeliveryManager", 
            "value_name": "SubscribedContent-310093Enabled",
            "fixed_val": 0, 
            "broke_val": 1,
        }
    },  
}

# -1 means break it
# 0 or None means "get"
# 1 means fix it
# returns 
#   on get: the value
#   on set: "changed", "same", or "error"
def reg_fixer(fixes, which, fix_it=None):
    reg_fix = fixes[which]["reg_fix"]

    try:
        # Open the registry key for reading and writing
        key = winreg.OpenKey(winreg.HKEY_CURRENT_USER, reg_fix["key_path"], 0, winreg.KEY_READ | winreg.KEY_WRITE)
    except FileNotFoundError:
        # Handle if the key doesn't exist
        key = winreg.CreateKey(winreg.HKEY_CURRENT_USER, reg_fix["key_path"])
    
    # Get the previous value of the registry key
    try:
        current_value, _ = winreg.QueryValueEx(key, reg_fix["value_name"])
        current_value = int(current_value)  # Convert value to integer
    except FileNotFoundError:
        current_value = None  # No previous value if the value doesn't exist

    # GET OPERATION STOPS HERE!!!
    if fix_it is None:
        winreg.CloseKey(key)
        return {"current": current_value, "fixed_val": reg_fix["fixed_val"], "broke_val": reg_fix["broke_val"], "is_fixed": (current_value == reg_fix["fixed_val"])}

    # POST OPERATION (fix_it is not None)
    note = None
    try:
        change_to = reg_fix["fixed_val"] if (fix_it == 1) else reg_fix["broke_val"]
        if change_to == current_value:
            note = "no change"
        else:
            # Set the new value for the registry key
            winreg.SetValueEx(key, reg_fix["value_name"], 0, winreg.REG_DWORD, change_to)
            # Another GET just to be sure the change worked
            current_value, _ = winreg.QueryValueEx(key, reg_fix["value_name"])
            current_value = int(current_value)  # Convert value to integer
            if current_value != change_to:
                note = "change failed!"
    except Exception as e:
        # If the update fails, set the previous and current values to be the same
        print(f"Error setting registry value: {e}")
        note = f"Error setting registry value: {e}"

    winreg.CloseKey(key)
    return {"current": current_value, "fixed_val": reg_fix["fixed_val"], "broke_val": reg_fix["broke_val"], "is_fixed": (current_value == reg_fix["fixed_val"]), "note": note}
        
settings = {}

for key, a_fix in fixes.items():
    settings[a_fix["pref_name"]] = reg_fixer(fixes,key)["is_fixed"]

@app.route('/')
def home_page():
    return render_template("index.html", fixes=fixes, settings=settings)

@app.route('/toggle_fix', methods=['POST'])
def toggle_fix():
    global fixes,settings
    
    data = request.get_json()
    fix_key = data.get('fix_key')
    is_fixed = data.get('fixed')

    # undo the fix if it IS fixed otherwise fix it
    result = reg_fixer(fixes,fix_key,-1 if is_fixed else 1)
    
    response = {'status': 'success', 'message': {"text":f'Toggled fix {fix_key}', 'fixed': result["is_fixed"], 'fun_return': result }}
    return jsonify(response)