Permissions problem after SP1 on SharePoint Server

You do not have permissions to do this operation. Ask your website administrator to change your pemissions and then try again, or log on with another account that has this permission. To log on with another user account click ok.

I need some help regarding the above error. After applying SP1 pack on our SharePoint Server 2007 (MOSS 3.0) the workflows aren't working anymmore on one of the WebApplications (located in SSP2) Workflows work, however on other existing applications (on SSP1 or SSP2) or newly created applications (on SSP1 or SSP2).

Details of error: 1. Default / Built in SharePoint Workflows are not starting 2. Sharepoint Designer Workflows throwing the following error message: "You do not have permissions to do this operation. Ask your website administrator to change your pemissions and then try again, or log on with another account that has this permission. To log on with another user account click ok. " 3. Before applying the SP1 on MOSS the workflows were working perfectly fine on this WebApplication.

so far: 1. I am logged in as Administrator (bot on Sharepoint site or when working with Sharepoint Designer). 2. Administrator is included in the list Site Collection Administrato开发者_StackOverflowrs 3. I noticed in Sharepoint designer that the username used for creating the workflow is 'converted' into SHAREPOINT\system (in the Modified By Column).

Has anybody come accross/fixed this error?

Any help much appreciated. Thanks D

You need to Disable the Loop Back check, this is something introduced in SP1 to avoid running things as the System Account for security purposes.

1. Click Start, click Run, type regedit, and then click OK.

2. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa

3. Right-click Lsa, point to New, and then click DWORD Value.

4. Type DisableLoopbackCheck, and then press ENTER.

5. Right-click DisableLoopbackCheck, and then click Modify.

6. In the Value data box, type 1, and then click OK.

Please understand that this feature exists for a reason, and you should configure your accounts properly to avoid the problem.