cannot view task scheduler summary

Question

When I look at task scheduler summary all areas are blank and reads : "Reading  data failed" When i try to refresh screen get error message popup: "The selected task "{0}" no longer exists. To see current tasks , click refresh". If i hit refresh it just repeats the error message again. Under the task manager library i can see/ edit the variuuos tasks that have been set up. Just cannot view the task summary results. What needs tbe changed in the task scheduler to allow view?

Thanks for your Assistance  JDW12

Update: Found solution- Run Disk Defragmention and setup schedule and reran task scheduler - my task scheduler summary has returned!!!

Fixed  Thanks

.

Answer 1

Arya,

I know you're saying to delete all the keys under the Schedulekey; in my case that would mean to delete the keys shown below in italics:

Schedule

    Aliases    CompatibilityAdapter        Signatures    Configuration    CredWom    Handlers    Handshake    TaskCache        Boot        Logon        Plain        Tasks        Tree

But, then how will I get them back ? Will these registry keys be recreated if I import — from within Task Scheduler — each task, one at a time, from a \Windows\System32\Tasks folder which I extracted from a System Image Backup (which I made after a reinstall) ? ****

---

Steps to re-create Task Scheduler

a. Click onStart; in the start search type regedit.exe and press Enter.

If you get consent prompt, click on Yes.

b. Browse through the following location.

HKLM\SOFTWARE\Microsoft\Windows NT\Current Version\Schedule key and then delete its subkeys. ****

c. Savethe changes and then exit out of the registry editor.

Now check if Task Scheduler works.

If the issue persists, please do not hesitate to let us know. It is our pleasure to be of assistance.

Answer 2

Hi,

Thank you for posting the query in Microsoft community!

I can imagine the inconvenience you have experienced. I will definitely help you in fixing the issue.

Did you make any changes on the computer prior to the issue?

Method 1:

You may want to try restarting the Task Scheduler service. To restart the service, follow the instructions given below.

a. Click Start.

b. Type servicesin the Start Search box. ****c. Right-Click **Services,**and select Run as Administrator

If you are prompted for an administrator password or confirmation, type your password or clickContinue. ****d. Right-click the Task Scheduler Service and select Restart.

Method 2:

Perform a clean boot state and check if it helps:

How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7

http://support.microsoft.com/kb/929135

Note: After trouble shooting put the computer to start as usual by performing step 7 from the above Knowledge Base article.

Method 3:

You may run System File Checker scan to fix the corrupted files.

How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7

http://support.microsoft.com/kb/929833

Method 4:

If the issue persists then you may try the following method and check if it helps

**Registry Disclaimer:**Important this section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 (http://support.microsoft.com/kb/322756/)

How to back up and restore the registry in Windows

Steps to re-create Task Scheduler

a. Click onStart; in the start search type regedit.exe and press Enter.

If you get consent prompt, click on Yes.

b. Browse through the following location.

HKLM\SOFTWARE\Microsoft\Windows NT\Current Version\Schedule key and then delete its subkeys. ****

c. Savethe changes and then exit out of the registry editor.

Now check if Task Scheduler works.

If the issue persists, please do not hesitate to let us know. It is our pleasure to be of assistance.

Hi ARYA thanks for your prompt response

As for you initial question I did use CCleaner to clean up my registery files on Jan 19/13 but not sure that my problem with Task Scheduler was a result of this.?? everything else on the computers seems to be functioning OK

As for your fixes, I have tried the following:

Method 1 - Did not get any option to restart service after right -click - service states that it is enabled and i could disable or enable

Method 2 - Not tried

Method 3 - ran system file checker - all files OK no errors found

Method 4 - found the registry path you outlined, my actual is : HKEY_Local_Machine\SOFTWARE\Microsoft\Windows NT\Current Version\Schedule, and I am not sure which subkeys to delete as per your instructions, There are several sub folders under the Schedule folder - do I delete all files and sub folders below Schedule folder? or just the contents(keys) in the Schedule folder?? I have created an export (back up) of this Schedule Folder data but  could not attach a copy for your review.

Thanks for your assistance

Answer 3

Hi,

Thank you for posting the query in Microsoft community!

I can imagine the inconvenience you have experienced. I will definitely help you in fixing the issue.

Did you make any changes on the computer prior to the issue?

Method 1:

You may want to try restarting the Task Scheduler service. To restart the service, follow the instructions given below.

a. Click Start.

b. Type servicesin the Start Search box. ****c. Right-Click **Services,**and select Run as Administrator

If you are prompted for an administrator password or confirmation, type your password or clickContinue. ****d. Right-click the Task Scheduler Serviceand select Restart.

Method 2:

Perform a clean boot state and check if it helps:

How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7

http://support.microsoft.com/kb/929135

Note: After trouble shooting put the computer to start as usual by performing step 7 from the above Knowledge Base article.

Method 3:

You may run System File Checker scan to fix the corrupted files.

How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7

http://support.microsoft.com/kb/929833

Method 4:

If the issue persists then you may try the following method and check if it helps

**Registry Disclaimer:**Important this section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 (http://support.microsoft.com/kb/322756/)

How to back up and restore the registry in Windows

Steps to re-create Task Scheduler

a. Click onStart; in the start search type regedit.exe and press Enter.

If you get consent prompt, click on Yes.

b. Browse through the following location.

HKLM\SOFTWARE\Microsoft\Windows NT\Current Version\Schedule key and then delete its subkeys. ****

c. Savethe changes and then exit out of the registry editor.

Now check if Task Scheduler works.

If the issue persists, please do not hesitate to let us know. It is our pleasure to be of assistance.