diff --git a/core/src/main/java/hudson/Functions.java b/core/src/main/java/hudson/Functions.java
index 0b3fb6a0e2..054b441f8e 100644
--- a/core/src/main/java/hudson/Functions.java
+++ b/core/src/main/java/hudson/Functions.java
@@ -41,7 +41,6 @@ import hudson.model.Computer;
 import hudson.model.Describable;
 import hudson.model.Descriptor;
 import hudson.model.DescriptorVisibilityFilter;
-import hudson.model.Hudson;
 import hudson.model.Item;
 import hudson.model.ItemGroup;
 import hudson.model.Items;
@@ -97,11 +96,9 @@ import hudson.util.jna.GNUCLibrary;
 import hudson.views.MyViewsTabBar;
 import hudson.views.ViewsTabBar;
 import hudson.widgets.RenderOnDemandClosure;
-import io.jenkins.servlet.ServletExceptionWrapper;
 import io.jenkins.servlet.http.CookieWrapper;
 import io.jenkins.servlet.http.HttpServletRequestWrapper;
 import io.jenkins.servlet.http.HttpServletResponseWrapper;
-import jakarta.servlet.ServletException;
 import jakarta.servlet.http.Cookie;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
@@ -190,8 +187,6 @@ import org.kohsuke.stapler.RawHtmlArgument;
 import org.kohsuke.stapler.Stapler;
 import org.kohsuke.stapler.StaplerRequest;
 import org.kohsuke.stapler.StaplerRequest2;
-import org.kohsuke.stapler.StaplerResponse;
-import org.kohsuke.stapler.StaplerResponse2;
 import org.springframework.security.access.AccessDeniedException;
 
 /**
@@ -921,11 +916,11 @@ public class Functions {
         return buf.toString();
     }
 
-    public static void checkPermission(Permission permission) throws IOException, ServletException {
+    public static void checkPermission(Permission permission) {
         checkPermission(Jenkins.get(), permission);
     }
 
-    public static void checkPermission(AccessControlled object, Permission permission) throws IOException, ServletException {
+    public static void checkPermission(AccessControlled object, Permission permission) {
         if (permission != null) {
             object.checkPermission(permission);
         }
@@ -936,7 +931,7 @@ public class Functions {
      * degrades gracefully if "it" is not an {@link AccessControlled} object.
      * Otherwise it will perform no check and that problem is hard to notice.
      */
-    public static void checkPermission(Object object, Permission permission) throws IOException, ServletException {
+    public static void checkPermission(Object object, Permission permission) {
         if (permission == null)
             return;
 
@@ -961,7 +956,7 @@ public class Functions {
      * @param permission
      *      If null, returns true. This defaulting is convenient in making the use of this method terse.
      */
-    public static boolean hasPermission(Permission permission) throws IOException, ServletException {
+    public static boolean hasPermission(Permission permission) {
         return hasPermission(Jenkins.get(), permission);
     }
 
@@ -969,7 +964,7 @@ public class Functions {
      * This version is so that the 'hasPermission' can degrade gracefully
      * if "it" is not an {@link AccessControlled} object.
      */
-    public static boolean hasPermission(Object object, Permission permission) throws IOException, ServletException {
+    public static boolean hasPermission(Object object, Permission permission) {
         if (permission == null)
             return true;
         if (object instanceof AccessControlled)
@@ -986,36 +981,6 @@ public class Functions {
         }
     }
 
-    /**
-     * @since 2.475
-     */
-    public static void adminCheck(StaplerRequest2 req, StaplerResponse2 rsp, Object required, Permission permission) throws IOException, ServletException {
-        // this is legacy --- all views should be eventually converted to
-        // the permission based model.
-        if (required != null && !Hudson.adminCheck(StaplerRequest.fromStaplerRequest2(req), StaplerResponse.fromStaplerResponse2(rsp))) {
-            // check failed. commit the FORBIDDEN response, then abort.
-            rsp.setStatus(HttpServletResponse.SC_FORBIDDEN);
-            rsp.getOutputStream().close();
-            throw new ServletException("Unauthorized access");
-        }
-
-        // make sure the user owns the necessary permission to access this page.
-        if (permission != null)
-            checkPermission(permission);
-    }
-
-   /**
-     * @deprecated use {@link #adminCheck(StaplerRequest2, StaplerResponse2, Object, Permission)}
-     */
-    @Deprecated
-    public static void adminCheck(StaplerRequest req, StaplerResponse rsp, Object required, Permission permission) throws IOException, javax.servlet.ServletException {
-        try {
-            adminCheck(StaplerRequest.toStaplerRequest2(req), StaplerResponse.toStaplerResponse2(rsp), required, permission);
-        } catch (ServletException e) {
-            throw ServletExceptionWrapper.fromJakartaServletException(e);
-        }
-    }
-
     /**
      * Infers the hudson installation URL from the given request.
      *
@@ -1298,7 +1263,7 @@ public class Functions {
      *
      * @since 2.238
      */
-    public static boolean hasAnyPermission(Object object, Permission[] permissions) throws IOException, ServletException {
+    public static boolean hasAnyPermission(Object object, Permission[] permissions) {
         if (permissions == null || permissions.length == 0) {
             return true;
         }
@@ -1336,7 +1301,7 @@ public class Functions {
      * degrades gracefully if "it" is not an {@link AccessControlled} object.
      * Otherwise it will perform no check and that problem is hard to notice.
      */
-    public static void checkAnyPermission(Object object, Permission[] permissions) throws IOException, ServletException {
+    public static void checkAnyPermission(Object object, Permission[] permissions) {
         if (permissions == null || permissions.length == 0) {
             return;
         }
diff --git a/core/src/main/java/hudson/model/Hudson.java b/core/src/main/java/hudson/model/Hudson.java
index 5ae161199c..53a6807fd7 100644
--- a/core/src/main/java/hudson/model/Hudson.java
+++ b/core/src/main/java/hudson/model/Hudson.java
@@ -42,7 +42,6 @@ import io.jenkins.servlet.ServletContextWrapper;
 import io.jenkins.servlet.ServletExceptionWrapper;
 import jakarta.servlet.ServletContext;
 import jakarta.servlet.ServletException;
-import jakarta.servlet.http.HttpServletResponse;
 import java.io.File;
 import java.io.IOException;
 import java.text.NumberFormat;
@@ -51,7 +50,6 @@ import java.util.List;
 import jenkins.model.Jenkins;
 import org.jvnet.hudson.reactor.ReactorException;
 import org.kohsuke.stapler.QueryParameter;
-import org.kohsuke.stapler.Stapler;
 import org.kohsuke.stapler.StaplerRequest;
 import org.kohsuke.stapler.StaplerResponse;
 import org.kohsuke.stapler.interceptor.RequirePOST;
@@ -293,27 +291,6 @@ public class Hudson extends Jenkins {
         return Platform.isDarwin();
     }
 
-    /**
-     * @deprecated since 2007-12-18.
-     *      Use {@link #checkPermission(hudson.security.Permission)}
-     */
-    @Deprecated
-    public static boolean adminCheck() throws IOException {
-        return adminCheck(Stapler.getCurrentRequest(), Stapler.getCurrentResponse());
-    }
-
-    /**
-     * @deprecated since 2007-12-18.
-     *      Use {@link #checkPermission(hudson.security.Permission)}
-     */
-    @Deprecated
-    public static boolean adminCheck(StaplerRequest req, StaplerResponse rsp) throws IOException {
-        if (isAdmin(req)) return true;
-
-        rsp.sendError(HttpServletResponse.SC_FORBIDDEN);
-        return false;
-    }
-
     /**
      * Checks if the current user (for which we are processing the current request)
      * has the admin access.