diff --git a/Ghidra/Features/Base/src/main/java/ghidra/app/util/task/ProgramOpener.java b/Ghidra/Features/Base/src/main/java/ghidra/app/util/task/ProgramOpener.java
index b885f7cd19..32322c0b61 100644
--- a/Ghidra/Features/Base/src/main/java/ghidra/app/util/task/ProgramOpener.java
+++ b/Ghidra/Features/Base/src/main/java/ghidra/app/util/task/ProgramOpener.java
@@ -22,8 +22,7 @@ import java.util.concurrent.atomic.AtomicReference;
 import docking.widgets.OptionDialog;
 import ghidra.app.plugin.core.progmgr.ProgramLocator;
 import ghidra.app.util.dialog.CheckoutDialog;
-import ghidra.framework.client.ClientUtil;
-import ghidra.framework.client.RepositoryAdapter;
+import ghidra.framework.client.*;
 import ghidra.framework.main.AppInfo;
 import ghidra.framework.model.DomainFile;
 import ghidra.framework.protocol.ghidra.GhidraURLQuery;
@@ -93,33 +92,28 @@ public class ProgramOpener {
 	 */
 	public Program openProgram(ProgramLocator locator, TaskMonitor monitor) {
 		if (locator.isURL()) {
-			try {
-				return openURL(locator, monitor);
-			}
-			catch (CancelledException e) {
-				return null;
-			}
-			catch (IOException e) {
-				Msg.showError(this, null, "Program Open Failed",
-					"Failed to open Ghidra URL: " + locator.getURL(), e);
-			}
+			return openURL(locator, monitor);
 		}
 		return openProgram(locator, locator.getDomainFile(), monitor);
 	}
 
-	private Program openURL(ProgramLocator locator, TaskMonitor monitor)
-			throws CancelledException, IOException {
+	private Program openURL(ProgramLocator locator, TaskMonitor monitor) {
 		URL ghidraUrl = locator.getURL();
 
 		AtomicReference<Program> openedProgram = new AtomicReference<>();
-		GhidraURLQuery.queryUrl(ghidraUrl, new GhidraURLResultHandlerAdapter() {
-			@Override
-			public void processResult(DomainFile domainFile, URL url, TaskMonitor m) {
-				Program p = openProgram(locator, domainFile, m);  // may return null
-				openedProgram.set(p);
-			}
-		}, monitor);
-
+		try {
+			GhidraURLQuery.queryUrl(ghidraUrl, new GhidraURLResultHandlerAdapter() {
+				@Override
+				public void processResult(DomainFile domainFile, URL url, TaskMonitor m) {
+					Program p = openProgram(locator, domainFile, m);  // may return null
+					openedProgram.set(p);
+				}
+			}, monitor);
+		}
+		catch (IOException | CancelledException e) {
+			// IOException reported to user by GhidraURLResultHandlerAdapter
+			return null;
+		}
 		return openedProgram.get();
 	}
 
diff --git a/Ghidra/Features/Base/src/test/java/ghidra/base/project/FakeSharedProject.java b/Ghidra/Features/Base/src/test/java/ghidra/base/project/FakeSharedProject.java
index 9197c68465..48814c23d2 100644
--- a/Ghidra/Features/Base/src/test/java/ghidra/base/project/FakeSharedProject.java
+++ b/Ghidra/Features/Base/src/test/java/ghidra/base/project/FakeSharedProject.java
@@ -465,12 +465,6 @@ public class FakeSharedProject {
 
 	void refresh() {
 		DefaultProjectData projectData = getProjectData();
-		try {
-			projectData.refresh(true);
-		}
-		catch (IOException e) {
-			// shouldn't happen
-			throw new AssertionFailedError("Unable to refresh project " + this);
-		}
+		projectData.refresh(true);
 	}
 }
diff --git a/Ghidra/Framework/Project/src/main/java/ghidra/framework/data/DefaultProjectData.java b/Ghidra/Framework/Project/src/main/java/ghidra/framework/data/DefaultProjectData.java
index f002c58108..0ea19f5143 100644
--- a/Ghidra/Framework/Project/src/main/java/ghidra/framework/data/DefaultProjectData.java
+++ b/Ghidra/Framework/Project/src/main/java/ghidra/framework/data/DefaultProjectData.java
@@ -734,7 +734,7 @@ public class DefaultProjectData implements ProjectData {
 	}
 
 	@Override
-	public void refresh(boolean force) throws IOException {
+	public void refresh(boolean force) {
 		try {
 			rootFolderData.refresh(true, true, projectDisposalMonitor);
 		}
diff --git a/Ghidra/Framework/Project/src/main/java/ghidra/framework/main/projectdata/actions/ProjectDataRefreshAction.java b/Ghidra/Framework/Project/src/main/java/ghidra/framework/main/projectdata/actions/ProjectDataRefreshAction.java
index 24f831e3be..9c5a0ecc53 100644
--- a/Ghidra/Framework/Project/src/main/java/ghidra/framework/main/projectdata/actions/ProjectDataRefreshAction.java
+++ b/Ghidra/Framework/Project/src/main/java/ghidra/framework/main/projectdata/actions/ProjectDataRefreshAction.java
@@ -17,14 +17,12 @@ package ghidra.framework.main.projectdata.actions;
 
 import java.awt.Component;
 import java.awt.event.KeyEvent;
-import java.io.IOException;
 
 import javax.swing.Icon;
 
 import docking.action.*;
-import ghidra.framework.client.ClientUtil;
-import ghidra.framework.main.datatable.ProjectDataContext;
 import ghidra.framework.main.datatable.FrontendProjectTreeAction;
+import ghidra.framework.main.datatable.ProjectDataContext;
 import ghidra.framework.model.ProjectData;
 import ghidra.util.HelpLocation;
 import ghidra.util.task.*;
@@ -53,13 +51,7 @@ public class ProjectDataRefreshAction extends FrontendProjectTreeAction {
 		TaskLauncher.launch(new Task("Refresh folders and files", false, false, true) {
 			@Override
 			public void run(TaskMonitor monitor) {
-				try {
-					projectData.refresh(false);
-				}
-				catch (IOException e) {
-					ClientUtil.handleException(projectData.getRepository(), e,
-						"Refresh Project Data", false, comp);
-				}
+				projectData.refresh(false);
 			}
 		});
 	}
diff --git a/Ghidra/Framework/Project/src/main/java/ghidra/framework/model/ProjectData.java b/Ghidra/Framework/Project/src/main/java/ghidra/framework/model/ProjectData.java
index e88f20f7dc..3cea690067 100644
--- a/Ghidra/Framework/Project/src/main/java/ghidra/framework/model/ProjectData.java
+++ b/Ghidra/Framework/Project/src/main/java/ghidra/framework/model/ProjectData.java
@@ -143,9 +143,8 @@ public interface ProjectData {
 	 * Sync the Domain folder/file structure with the underlying file structure.
 	 * @param force if true all folders will be be visited and refreshed, if false
 	 * only those folders previously visited will be refreshed.
-	 * @throws IOException if an IO error occurs
 	 */
-	public void refresh(boolean force) throws IOException;
+	public void refresh(boolean force);
 
 	/**
 	 * Returns User object associated with remote repository or null if a remote repository
diff --git a/Ghidra/Framework/Project/src/test/java/ghidra/framework/model/TestDummyProjectData.java b/Ghidra/Framework/Project/src/test/java/ghidra/framework/model/TestDummyProjectData.java
index 648dcb920b..32921a18bd 100644
--- a/Ghidra/Framework/Project/src/test/java/ghidra/framework/model/TestDummyProjectData.java
+++ b/Ghidra/Framework/Project/src/test/java/ghidra/framework/model/TestDummyProjectData.java
@@ -119,7 +119,7 @@ public class TestDummyProjectData implements ProjectData {
 	}
 
 	@Override
-	public void refresh(boolean force) throws IOException {
+	public void refresh(boolean force) {
 		// stub
 	}