diff --git a/wowup-electron/ipc-events.ts b/wowup-electron/ipc-events.ts
index 6aea993c..309d5cfa 100644
--- a/wowup-electron/ipc-events.ts
+++ b/wowup-electron/ipc-events.ts
@@ -22,6 +22,7 @@ import {
   RENAME_DIRECTORY_CHANNEL,
   READ_FILE_CHANNEL,
   GET_ASSET_FILE_PATH,
+  DELETE_FILE_CHANNEL,
 } from "./src/common/constants";
 import { CurseGetScanResultsRequest } from "./src/common/curse/curse-get-scan-results-request";
 import { CurseGetScanResultsResponse } from "./src/common/curse/curse-get-scan-results-response";
@@ -132,13 +133,10 @@ ipcMain.on(LIST_DIRECTORIES_CHANNEL, (evt, arg: ValueRequest<string>) => {
 ipcMain.on(PATH_EXISTS_CHANNEL, (evt, arg: ValueRequest<string>) => {
   const response: ValueResponse<boolean> = { value: false };
 
-  fs.open(arg.value, "r", (err, fid) => {
+  fs.access(arg.value, (err) => {
     if (err) {
-      if (err.code === "ENOENT") {
-        response.value = false;
-      } else {
-        response.error = err;
-      }
+      console.error(err);
+      response.value = true;
     } else {
       response.value = true;
     }
@@ -243,6 +241,22 @@ ipcMain.on(DELETE_DIRECTORY_CHANNEL, (evt, arg: DeleteDirectoryRequest) => {
   });
 });
 
+ipcMain.on(DELETE_FILE_CHANNEL, (evt, arg: ValueRequest<string>) => {
+  console.log("Delete File", arg);
+  const response: ValueResponse<boolean> = {
+    value: false,
+  };
+  fs.unlink(arg.value, (err) => {
+    if (err) {
+      response.error = err;
+    } else {
+      response.value = true;
+    }
+
+    evt.reply(arg.responseKey, response);
+  });
+});
+
 ipcMain.on(RENAME_DIRECTORY_CHANNEL, (evt, arg: CopyDirectoryRequest) => {
   console.log("Rename Dir", arg);
   fs.rename(arg.sourcePath, arg.destinationPath, (err) => {
diff --git a/wowup-electron/src/app/services/addons/addon.service.ts b/wowup-electron/src/app/services/addons/addon.service.ts
index 219fd9f1..93dd26c8 100644
--- a/wowup-electron/src/app/services/addons/addon.service.ts
+++ b/wowup-electron/src/app/services/addons/addon.service.ts
@@ -224,12 +224,20 @@ export class AddonService {
 
       // TODO track error
     } finally {
-      if (fs.existsSync(unzippedDirectory)) {
+      const unzippedDirectoryExists = await this._fileService.pathExists(
+        unzippedDirectory
+      );
+
+      const downloadedFilePathExists = await this._fileService.pathExists(
+        downloadedFilePath
+      );
+
+      if (unzippedDirectoryExists) {
         await this._fileService.deleteDirectory(unzippedDirectory);
       }
 
-      if (fs.existsSync(downloadedFilePath)) {
-        fs.unlinkSync(downloadedFilePath);
+      if (downloadedFilePathExists) {
+        await this._fileService.deleteFile(downloadedFilePath);
       }
     }
 
diff --git a/wowup-electron/src/app/services/files/file.service.ts b/wowup-electron/src/app/services/files/file.service.ts
index 909a696d..30f0a15e 100644
--- a/wowup-electron/src/app/services/files/file.service.ts
+++ b/wowup-electron/src/app/services/files/file.service.ts
@@ -2,6 +2,7 @@ import { Injectable } from "@angular/core";
 import {
   COPY_DIRECTORY_CHANNEL,
   DELETE_DIRECTORY_CHANNEL,
+  DELETE_FILE_CHANNEL,
   GET_ASSET_FILE_PATH,
   LIST_DIRECTORIES_CHANNEL,
   LIST_FILES_CHANNEL,
@@ -53,7 +54,11 @@ export class FileService {
     });
   }
 
-  public pathExists(sourcePath: string) {
+  public pathExists(sourcePath: string): Promise<boolean> {
+    if (!sourcePath) {
+      return Promise.resolve(false);
+    }
+
     return new Promise((resolve, reject) => {
       const eventHandler = (_evt: any, arg: ValueResponse<boolean>) => {
         if (arg.error) {
@@ -91,6 +96,25 @@ export class FileService {
     });
   }
 
+  public deleteFile(sourcePath: string): Promise<boolean> {
+    return new Promise((resolve, reject) => {
+      const eventHandler = (_evt: any, arg: ValueResponse<boolean>) => {
+        if (arg.error) {
+          return reject(arg.error);
+        }
+        resolve(arg.value);
+      };
+
+      const request: ValueRequest<string> = {
+        value: sourcePath,
+        responseKey: uuidv4(),
+      };
+
+      this._electronService.ipcRenderer.once(request.responseKey, eventHandler);
+      this._electronService.ipcRenderer.send(DELETE_FILE_CHANNEL, request);
+    });
+  }
+
   public copyDirectory(sourcePath: string, destinationPath: string) {
     return new Promise((resolve, reject) => {
       const eventHandler = (_evt: any, arg: Error) => {
@@ -173,6 +197,14 @@ export class FileService {
     });
   }
 
+  public listEntries(sourcePath: string, filter: string) {
+    const globFilter = globrex(filter);
+
+    return fs
+      .readdirSync(sourcePath, { withFileTypes: true })
+      .filter((entry) => !!globFilter.regex.test(entry.name));
+  }
+
   public listFiles(sourcePath: string, filter: string) {
     const globFilter = globrex(filter);
 
diff --git a/wowup-electron/src/app/services/wowup/wowup.service.ts b/wowup-electron/src/app/services/wowup/wowup.service.ts
index be255680..321b1d9e 100644
--- a/wowup-electron/src/app/services/wowup/wowup.service.ts
+++ b/wowup-electron/src/app/services/wowup/wowup.service.ts
@@ -68,6 +68,8 @@ export class WowUpService {
     this.applicationVersion = _electronService.remote.app.getVersion();
     this.isBetaBuild =
       this.applicationVersion.toLowerCase().indexOf("beta") != -1;
+
+    this.cleanupDownloads();
   }
 
   public get updaterExists() {
@@ -308,4 +310,28 @@ export class WowUpService {
       ? WowUpReleaseChannelType.Beta
       : WowUpReleaseChannelType.Stable;
   }
+
+  /**
+   * Clean up lost downloads in the download folder
+   */
+  private async cleanupDownloads() {
+    const downloadFiles = this._fileService.listEntries(
+      this.applicationDownloadsFolderPath,
+      "*"
+    );
+
+    for (let entry of downloadFiles) {
+      const path = join(this.applicationDownloadsFolderPath, entry.name);
+      try {
+        if (entry.isDirectory()) {
+          await this._fileService.deleteDirectory(path);
+        } else {
+          await this._fileService.deleteFile(path);
+        }
+      } catch (e) {
+        console.error("Failed to delete download entry", path);
+        console.error(e);
+      }
+    }
+  }
 }
diff --git a/wowup-electron/src/common/constants.ts b/wowup-electron/src/common/constants.ts
index b98d2094..f83cd8b5 100644
--- a/wowup-electron/src/common/constants.ts
+++ b/wowup-electron/src/common/constants.ts
@@ -1,6 +1,7 @@
 export const DOWNLOAD_FILE_CHANNEL = "download-file";
 export const COPY_DIRECTORY_CHANNEL = "copy-directory";
 export const DELETE_DIRECTORY_CHANNEL = "delete-directory";
+export const DELETE_FILE_CHANNEL = "delete-file";
 export const RENAME_DIRECTORY_CHANNEL = "rename-directory";
 export const STAT_DIRECTORY_CHANNEL = "stat-directory";
 export const LIST_DIRECTORIES_CHANNEL = "list-directories";