diff --git a/src/components/ChallengeEditor/ChallengeViewTabs/index.js b/src/components/ChallengeEditor/ChallengeViewTabs/index.js
index c8cb0007..84ee5676 100644
--- a/src/components/ChallengeEditor/ChallengeViewTabs/index.js
+++ b/src/components/ChallengeEditor/ChallengeViewTabs/index.js
@@ -13,7 +13,12 @@ import LegacyLinks from '../../LegacyLinks'
 import ForumLink from '../../ForumLink'
 import ResourcesTab from '../Resources'
 import Submissions from '../Submissions'
-import { checkAdmin, checkEditResourceRoles, checkReadOnlyRoles } from '../../../util/tc'
+import {
+  checkAdmin,
+  checkEditResourceRoles,
+  checkReadOnlyRoles,
+  checkCopilot
+} from '../../../util/tc'
 import { CHALLENGE_STATUS, MESSAGE } from '../../../config/constants'
 import Tooltip from '../../Tooltip'
 import CancelDropDown from '../Cancel-Dropdown'
@@ -117,6 +122,21 @@ const ChallengeViewTabs = ({
   const isDraft = challenge.status.toUpperCase() === CHALLENGE_STATUS.DRAFT
   const isSelfServiceCopilot = challenge.legacy.selfServiceCopilot === loggedInUser.handle
   const isAdmin = checkAdmin(token)
+
+  // Make sure that the Launch and Mark as completed buttons are hidden
+  // for tasks that are assigned to the current logged in user, if that user has the copilot role.
+  const preventCopilotFromActivatingTask = useMemo(() => {
+    return isTask &&
+      checkCopilot(token) &&
+      assignedMemberDetails &&
+      loggedInUser &&
+      `${loggedInUser.userId}` === `${assignedMemberDetails.userId}`
+  }, [
+    token,
+    assignedMemberDetails,
+    loggedInUser
+  ])
+
   const isReadOnly = checkReadOnlyRoles(token)
   const canApprove = (isSelfServiceCopilot || enableEdit) && isDraft && isSelfService
   const hasBillingAccount = _.get(projectDetail, 'billingAccountId') !== null
@@ -125,10 +145,35 @@ const ChallengeViewTabs = ({
   // OR if this isn't a non-self-service draft, permit launching if:
   // a) the current user is either the self-service copilot or is an admin AND
   // b) the challenge is approved
-  const canLaunch = enableEdit && hasBillingAccount && !isReadOnly &&
-    ((!isSelfService && isDraft) ||
-      ((isSelfServiceCopilot || isAdmin) &&
-        challenge.status.toUpperCase() === CHALLENGE_STATUS.APPROVED))
+  const canLaunch = useMemo(() => {
+    return enableEdit &&
+      hasBillingAccount &&
+      (!isReadOnly) &&
+      (!preventCopilotFromActivatingTask) &&
+      (
+        (
+          !isSelfService &&
+          isDraft
+        ) ||
+        (
+          (
+            isSelfServiceCopilot ||
+            isAdmin
+          ) &&
+          challenge.status.toUpperCase() === CHALLENGE_STATUS.APPROVED
+        )
+      )
+  }, [
+    enableEdit,
+    hasBillingAccount,
+    isReadOnly,
+    isSelfService,
+    isDraft,
+    isSelfServiceCopilot,
+    isAdmin,
+    challenge.status,
+    preventCopilotFromActivatingTask
+  ])
 
   return (
     <div className={styles.list}>
@@ -184,20 +229,26 @@ const ChallengeViewTabs = ({
               />
             </div>
           )}
-          {isTask && challenge.status === 'Active' && (
-            <div className={styles.button}>
-              {assignedMemberDetails ? (
-                <Tooltip content={MESSAGE.MARK_COMPLETE}>
-                  <PrimaryButton text={'Mark Complete'} type={'success'} onClick={onCloseTask} />
-                </Tooltip>
-              ) : (
-                <Tooltip content={MESSAGE.NO_TASK_ASSIGNEE}>
-                  {/* Don't disable button for real inside tooltip, otherwise mouseEnter/Leave events work not good */}
-                  <PrimaryButton text={'Mark Complete'} type={'disabled'} />
-                </Tooltip>
-              )}
-            </div>
-          )}
+          {
+            (
+              isTask &&
+              challenge.status === 'Active' &&
+              !preventCopilotFromActivatingTask
+            ) && (
+              <div className={styles.button}>
+                {assignedMemberDetails ? (
+                  <Tooltip content={MESSAGE.MARK_COMPLETE}>
+                    <PrimaryButton text={'Mark Complete'} type={'success'} onClick={onCloseTask} />
+                  </Tooltip>
+                ) : (
+                  <Tooltip content={MESSAGE.NO_TASK_ASSIGNEE}>
+                    {/* Don't disable button for real inside tooltip, otherwise mouseEnter/Leave events work not good */}
+                    <PrimaryButton text={'Mark Complete'} type={'disabled'} />
+                  </Tooltip>
+                )}
+              </div>
+            )
+          }
           {enableEdit && !canEditResource && (
             <PrimaryButton text={'Edit'} type={'info'} submit link={`./edit`} />
           )}
diff --git a/src/components/ChallengeEditor/Submissions/index.js b/src/components/ChallengeEditor/Submissions/index.js
index 7aba7d92..13428040 100644
--- a/src/components/ChallengeEditor/Submissions/index.js
+++ b/src/components/ChallengeEditor/Submissions/index.js
@@ -9,6 +9,7 @@ import moment from 'moment'
 import _ from 'lodash'
 import { STUDIO_URL, SUBMISSION_REVIEW_APP_URL, getTCMemberURL } from '../../../config/constants'
 import { PrimaryButton } from '../../Buttons'
+import AlertModal from '../../Modal/AlertModal'
 import cn from 'classnames'
 import ReactSVG from 'react-svg'
 import {
@@ -20,17 +21,23 @@ import {
   checkAdmin
 } from '../../../util/tc'
 import {
-  getTopcoderReactLib
+  getTopcoderReactLib,
+  isValidDownloadFile
 } from '../../../util/topcoder-react-lib'
 import {
   compressFiles
 } from '../../../util/files'
 import styles from './Submissions.module.scss'
+import modalStyles from '../../../styles/modal.module.scss'
 const assets = require.context('../../../assets/images', false, /svg/)
 const ArrowDown = './arrow-down.svg'
 const Lock = './lock.svg'
 const Download = './IconSquareDownload.svg'
 
+const theme = {
+  container: modalStyles.modalContainer
+}
+
 class SubmissionsComponent extends React.Component {
   constructor (props) {
     super(props)
@@ -42,7 +49,8 @@ class SubmissionsComponent extends React.Component {
       isShowInformation: false,
       memberOfModal: '',
       sortedSubmissions: [],
-      downloadingAll: false
+      downloadingAll: false,
+      alertMessage: ''
     }
     this.getSubmissionsSortParam = this.getSubmissionsSortParam.bind(this)
     this.updateSortedSubmissions = this.updateSortedSubmissions.bind(this)
@@ -222,7 +230,7 @@ class SubmissionsComponent extends React.Component {
     const { field, sort } = this.getSubmissionsSortParam()
     const revertSort = sort === 'desc' ? 'asc' : 'desc'
 
-    const { sortedSubmissions, downloadingAll } = this.state
+    const { sortedSubmissions, downloadingAll, alertMessage } = this.state
 
     const renderSubmission = s => (
       <div className={styles.submission} key={s.id}>
@@ -544,19 +552,27 @@ class SubmissionsComponent extends React.Component {
                             const submissionsService = getService(token)
                             submissionsService.downloadSubmission(s.id)
                               .then((blob) => {
-                                // eslint-disable-next-line no-undef
-                                const url = window.URL.createObjectURL(new Blob([blob]))
-                                const link = document.createElement('a')
-                                link.href = url
-                                let fileName = s.legacySubmissionId
-                                if (!fileName) {
-                                  fileName = s.id
-                                }
-                                fileName = fileName + '.zip'
-                                link.setAttribute('download', `${fileName}`)
-                                document.body.appendChild(link)
-                                link.click()
-                                link.parentNode.removeChild(link)
+                                isValidDownloadFile(blob).then((isValidFile) => {
+                                  if (isValidFile.success) {
+                                    // eslint-disable-next-line no-undef
+                                    const url = window.URL.createObjectURL(new Blob([blob]))
+                                    const link = document.createElement('a')
+                                    link.href = url
+                                    let fileName = s.legacySubmissionId
+                                    if (!fileName) {
+                                      fileName = s.id
+                                    }
+                                    fileName = fileName + '.zip'
+                                    link.setAttribute('download', `${fileName}`)
+                                    document.body.appendChild(link)
+                                    link.click()
+                                    link.parentNode.removeChild(link)
+                                  } else {
+                                    this.setState({
+                                      alertMessage: isValidFile.message || 'Can not download this submission.'
+                                    })
+                                  }
+                                })
                               })
                           }}
                         >
@@ -611,10 +627,14 @@ class SubmissionsComponent extends React.Component {
                     fileName = fileName + '.zip'
                     submissionsService.downloadSubmission(submission.id)
                       .then((blob) => {
-                        const file = new window.File([blob], `${fileName}`)
-                        allFiles.push(file)
-                        downloadedFile += 1
-                        checkToCompressFiles()
+                        isValidDownloadFile(blob).then((isValidFile) => {
+                          if (isValidFile.success) {
+                            const file = new window.File([blob], `${fileName}`)
+                            allFiles.push(file)
+                          }
+                          downloadedFile += 1
+                          checkToCompressFiles()
+                        })
                       }).catch(() => {
                         downloadedFile += 1
                         checkToCompressFiles()
@@ -625,6 +645,20 @@ class SubmissionsComponent extends React.Component {
             </div>
           </div>) : null}
         </div>
+
+        {alertMessage ? (
+          <AlertModal
+            title=''
+            message={alertMessage}
+            theme={theme}
+            closeText='OK'
+            onClose={() => {
+              this.setState({
+                alertMessage: ''
+              })
+            }}
+          />
+        ) : null}
       </>
     )
   }
diff --git a/src/components/ChallengeEditor/index.js b/src/components/ChallengeEditor/index.js
index f181e87b..0bf42dfa 100644
--- a/src/components/ChallengeEditor/index.js
+++ b/src/components/ChallengeEditor/index.js
@@ -30,7 +30,12 @@ import {
   MULTI_ROUND_CHALLENGE_TEMPLATE_ID, DS_TRACK_ID,
   CHALLENGE_STATUS
 } from '../../config/constants'
-import { getDomainTypes, getResourceRoleByName, is2RoundsChallenge } from '../../util/tc'
+import {
+  getDomainTypes,
+  getResourceRoleByName,
+  is2RoundsChallenge,
+  checkCopilot
+} from '../../util/tc'
 import { getPhaseEndDate } from '../../util/date'
 import { PrimaryButton, OutlineButton } from '../Buttons'
 import TrackField from './Track-Field'
@@ -1527,6 +1532,14 @@ class ChallengeEditor extends Component {
     const statusMessage = challenge.status && challenge.status.split(' ')[0].toUpperCase()
     const errorContainer = <div className={styles.errorContainer}><div className={styles.errorMessage}>{error}</div></div>
 
+    // Make sure that the Launch and Mark as completed buttons are hidden
+    // for tasks that are assigned to the current logged in user, if that user has the copilot role.
+    const preventCopilotFromActivatingTask = isTask &&
+      checkCopilot(token) &&
+      assignedMemberDetails &&
+      loggedInUser &&
+      `${loggedInUser.userId}` === `${assignedMemberDetails.userId}`
+
     const actionButtons = <React.Fragment>
       {!isLoading && this.state.hasValidationErrors && <div className={styles.error}>Please fix the errors before saving</div>}
       {
@@ -1553,18 +1566,23 @@ class ChallengeEditor extends Component {
                   <PrimaryButton text={'Save Draft'} type={'disabled'} />
                 )}
               </div>
-              {isDraft && (
-                <div className={styles.button}>
-                  {(challenge.legacyId || isTask) && !this.state.hasValidationErrors ? (
-                    <PrimaryButton text={'Launch as Active'} type={'info'} onClick={this.toggleLaunch} />
-                  ) : (
-                    <Tooltip content={MESSAGE.NO_LEGACY_CHALLENGE}>
-                      {/* Don't disable button for real inside tooltip, otherwise mouseEnter/Leave events work not good */}
-                      <PrimaryButton text={'Launch as Active'} type={'disabled'} />
-                    </Tooltip>
-                  )}
-                </div>
-              )}
+              {
+                (
+                  isDraft &&
+                  !preventCopilotFromActivatingTask
+                ) && (
+                  <div className={styles.button}>
+                    {(challenge.legacyId || isTask) && !this.state.hasValidationErrors ? (
+                      <PrimaryButton text={'Launch as Active'} type={'info'} onClick={this.toggleLaunch} />
+                    ) : (
+                      <Tooltip content={MESSAGE.NO_LEGACY_CHALLENGE}>
+                        {/* Don't disable button for real inside tooltip, otherwise mouseEnter/Leave events work not good */}
+                        <PrimaryButton text={'Launch as Active'} type={'disabled'} />
+                      </Tooltip>
+                    )}
+                  </div>
+                )
+              }
               {statusMessage !== CHALLENGE_STATUS.CANCELLED &&
                 <div className={styles.button}>
                   <CancelDropDown challenge={challenge} onSelectMenu={cancelChallenge} />
@@ -1575,7 +1593,10 @@ class ChallengeEditor extends Component {
               <div className={styles.button}>
                 <OutlineButton text={isSaving ? 'Saving...' : 'Save'} type={'success'} onClick={this.onSaveChallenge} />
               </div>
-              {isTask && (
+              {(
+                isTask &&
+                !preventCopilotFromActivatingTask
+              ) && (
                 <div className={styles.button}>
                   <Tooltip content={MESSAGE.MARK_COMPLETE}>
                     <PrimaryButton text={'Mark Complete'} type={'success'} onClick={this.openCloseTaskConfirmation} />
diff --git a/src/config/constants.js b/src/config/constants.js
index 0bb1db0f..a959f65b 100644
--- a/src/config/constants.js
+++ b/src/config/constants.js
@@ -263,6 +263,10 @@ export const ADMIN_ROLES = [
   'connect admin'
 ]
 
+export const COPILOT_ROLES = [
+  'copilot'
+]
+
 export const downloadAttachmentURL = (challengeId, attachmentId, token) =>
   `${CHALLENGE_API_URL}/${challengeId}/attachments/${attachmentId}/download?token=${token}`
 
diff --git a/src/util/tc.js b/src/util/tc.js
index 2f85ed5d..00b8c81e 100644
--- a/src/util/tc.js
+++ b/src/util/tc.js
@@ -6,6 +6,7 @@ import {
   CHALLENGE_TRACKS,
   ALLOWED_USER_ROLES,
   ADMIN_ROLES,
+  COPILOT_ROLES,
   SUBMITTER_ROLE_UUID,
   READ_ONLY_ROLES,
   ALLOWED_DOWNLOAD_SUBMISSIONS_ROLES,
@@ -198,6 +199,15 @@ export const checkAdmin = token => {
   return roles.some(val => ADMIN_ROLES.indexOf(val.toLowerCase()) > -1)
 }
 
+/**
+ * Checks if token has any of the copilot roles
+ * @param  token
+ */
+export const checkCopilot = token => {
+  const roles = _.get(decodeToken(token), 'roles')
+  return roles.some(val => COPILOT_ROLES.indexOf(val.toLowerCase()) > -1)
+}
+
 /**
  * Get resource role by name
  *
diff --git a/src/util/topcoder-react-lib.js b/src/util/topcoder-react-lib.js
index 5eb90f84..e139379b 100644
--- a/src/util/topcoder-react-lib.js
+++ b/src/util/topcoder-react-lib.js
@@ -14,3 +14,21 @@ export const getTopcoderReactLib = () => {
   const reactLib = require('topcoder-react-lib')
   return reactLib
 }
+
+export const isValidDownloadFile = async (blobFile) => {
+  if (!blobFile) {
+    return {
+      success: false
+    }
+  }
+  if (blobFile.type.indexOf('json') >= 0) {
+    const backendResonse = JSON.parse(await blobFile.text())
+    return {
+      success: false,
+      message: backendResonse.message || ''
+    }
+  }
+  return {
+    success: true
+  }
+}