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Archive for the ‘Office Web Applications’ Category

PowerPoint Web Application encountered an error: Service unavailable. Please try again later.

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That’s funny, but PowerPoint stop working today without any visible reasons. Error message about service anavailable

I tryed to get into PowerPoint Service Application, but System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.

and this in log:

1: “Could not find default ServiceProxy or it does not implement IWacServiceApplicationProxy”

2: “Unhandled exception caught when executing web method handler: System.NullReferenceException”

First of all – re-create PowerPoint Service Application. Problem with given key is gone.

Investigation… Something wrong with the PowerPoint application proxy. This solution using UI did’t work for me and  . It was not hooked up to the default proxy group, but admin pages said different. (Thanks to Dale Hirt)

Get-SPPowerPointServiceApplicationProxy | Remove-SPPowerPointServiceApplicationProxy -confirm

Add new one w-AddToDefaultGroup switch:

Get-SPPowerPointServiceApplication | New-SPPowerPointServiceApplicationProxy -Name “PowerPoint Proxy” -AddToDefaultGroup

Verification:

$(Get-SPPowerPointServiceApplication).ServiceApplicationProxyGroup.DefaultProxies

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Written by Alex Anikin

May 12, 2012 at 10:11 pm

Strange Office Web in Word Vieving Service Error after SP1 install

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In Central Administration at Services On Server we have Word Viewing Service stopped.

When we try to start it – we get this (the main is highlighted):

Adding binding ‘*:32843:’ for protocol ‘http’. 8dce029c-949a-495f-9c87-fae7133d906a
08/10/2011 09:45:37.55  w3wp.exe (0x1608)                        0x11FC SharePoint Foundation          Topology                       bmu2 High     Adding secure binding ‘*:32844:’ with SSL certificate ‘FindBySubjectDistinguishedName:CN=SharePoint Services, OU=SharePoint, O=Microsoft, C=US’ in store ‘SharePoint’. 8dce029c-949a-495f-9c87-fae7133d906a
08/10/2011 09:45:37.55  w3wp.exe (0x1608)                        0x11FC SharePoint Foundation          Topology                       bmu3 High     Adding binding ‘32845:*’ for protocol ‘net.tcp’. 8dce029c-949a-495f-9c87-fae7133d906a
08/10/2011 09:45:37.55  w3wp.exe (0x1608)                        0x11FC SharePoint Foundation          Topology                       bmu3 High     Adding binding ‘*’ for protocol ‘net.pipe’. 8dce029c-949a-495f-9c87-fae7133d906a
08/10/2011 09:45:38.07  w3wp.exe (0x1608)                        0x11FC SharePoint Foundation          Topology                       fx74 High     An exception occured while committing IIS configuration changes: A specified logon session does not exist. It may already have been terminated. (Exception from HRESULT: 0x80070520) 8dce029c-949a-495f-9c87-fae7133d906a
08/10/2011 09:45:39.10  w3wp.exe (0x1608)                        0x11FC SharePoint Foundation          Topology                       bmu3 High     Adding binding ‘*:32843:’ for protocol ‘http’. 8dce029c-949a-495f-9c87-fae7133d906a
08/10/2011 09:45:39.10  w3wp.exe (0x1608)                        0x11FC SharePoint Foundation          Topology                       bmu2 High     Adding secure binding ‘*:32844:’ with SSL certificate ‘FindBySubjectDistinguishedName:CN=SharePoint Services, OU=SharePoint, O=Microsoft, C=US’ in store ‘SharePoint’. 8dce029c-949a-495f-9c87-fae7133d906a
08/10/2011 09:45:39.10  w3wp.exe (0x1608)                        0x11FC SharePoint Foundation          Topology                       bmu3 High     Adding binding ‘32845:*’ for protocol ‘net.tcp’. 8dce029c-949a-495f-9c87-fae7133d906a
08/10/2011 09:45:39.10  w3wp.exe (0x1608)

Investigation – something wrong with Sharepoint Service certificate. And it can’t be assigned.

Resolution in this article: http://blogs.msdn.com/b/besidethepoint/archive/2010/11/30/sharepoint-2010-certificates.aspx

I use SPServiceHostCertificate_Example and change $names = “Sharepoint Services”, “full.server.name” and $env:PSModulePath to folder with files. As I can see – we recreate certificates and assign the new one to services. Word Viewing Service is started for me now. Fuff…

Written by Alex Anikin

August 10, 2011 at 4:14 pm

Word and PowerPoint File Open in Browser Error

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Sometimes we get an error in Office Web Application like this:

Word Web App cannot open this document for viewing because of an unexpected error. To view this document, open it in Microsoft Word.
Error Id: e526e7cf-f17a-48ee-85ee-916c593e0569, 20110415162644

What we can see in logs? Surprise!

DownloadManager: Exception thrown downloading file \\fs001\Anikin, Alexander\Agency contract.docx: System.UnauthorizedAccessException: Access to the path ‘C:\Windows\TEMP\waccache\30091891-f580-40fb-a151-9ff2114df390\DEV_ow_services\e7c940c5-2bc8-471b-b63d-37507944b53a\’ is denied.

Sharepoint Services Pool (OWA workrs under) account can’t write into the Temp\waccache folder any more.

I’be found this, but solution 1 don’t work for me. I add permissions for this folder to my accounts and it works!

I don’t know why it happens. Conversion service use this folder for temp files, but it start creating folders without needed permissions.

Written by Alex Anikin

April 16, 2011 at 10:49 am

Sharepoint Service Account’s Permisions for Office Web Apps

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I had some  investigations about Sharepoint account permissions and rights.

What I have: Windows Server 2008 R2 (included in AD, with Service Packs), SharePoint Foundation 2010 (very important – with update kb2394323) , Office Web Applications (very important – with update KB2346411  – this update has a lot for changes for OWA, and big changes in PowerPoint) .

I have simple account’s configuration:
domain\ow_site – web-applicaiton pool
Domain Groups Member Of: Domain Users, and rights for reading other users account if needed.
Local Server: Administrators (WSS_WPG and others adding automatically at creation time of managed accounts)
Local policies (if needed for any reasons – ex. specific authentication with http-module): Act as part of operating system, Logon as service  

domain\ow_services – services pool (by default: SharePoint Services Default Pool: Word, PowerPoint, Excel and etc.; we can definitely do separate account for services)
Domain Groups Member Of: Domain Users, and rights for reading other users account if needed.
Local Server: Administrators, (WSS_WPG and others adding automatically at creation time of managed accounts)
Local policies(if needed for any reasons – ex. specific authentication with http-module): Act as part of operating system, Logon as service

Comments:

1. Excel Services account should be in local Administrators when it’s working in File Access Method – Impersonation. (more info https://aanikin.wordpress.com/2010/11/13/excel-services-file-access-method-impersonation/)

2. After Security  Update KB2346411 PowerPoint Service needs thats web-applications pool acoount must be member of Local Administrators group. (As i think something with local policies.)

3. After Security  Update KB2346411 PowerPoint service account must have rights for writing to web-application content db:

Adding ow_services account db_owner role for  web-application content DB
a. Getting database name in Central Administration->Application Management->Manage content database – choose created Office Web Application at upper right corner. Copy DB_NAME for this application
b. Create config.sql file:
use [DB_NAME]
go
create user [DOMAIN\svc_ow_services] from login [DOMAIN\svc_ow_services]
go
sp_addrolemember ‘db_ownew’, ‘DOMAIN\svc_ow_services’
c. Run the command as administrator in the same folder with config.sql:
“C:\Program Files\Microsoft SQL Server\100\Tools\Binn\”sqlcmd –S localhost\SHAREPOINT –i config.sql
d. Do iisreset /noforce

Written by Alex Anikin

December 21, 2010 at 1:41 pm

How to Clear Office Web Applications Cache

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For testing purposes(ex. performance tests) sometimes we need need to clear Office Web Applications Cache. 

PowerShell: Remove-SPOfficeWebAppsCache -WebApplication <web_app_name>

Warning: Performing operation “Remove-SPOfficeWebAppsCache” on Target “Removing the Office Web Apps cache could result in degraded performance of Word Web App and PowerPoint Web App.”.

More info about OWA Cache: http://blogs.technet.com/b/wbaer/archive/2010/09/01/the-office-web-applications-cache.aspx

Written by Alex Anikin

December 13, 2010 at 12:34 pm