Build on SharePoint

The blog of Sam Betts on SharePoint application development - full of lot's of useful info, guides, and various cats.

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  • Blog Post: AppFabric Distributed Logon Token/ViewState Cache is Timing-Out - Continued

    In a previous post I described how to troubleshoot AppFabric timeouts a problem which many customers have seen, most acutely when SharePoint is under heavy load. One thing consistent to almost every case is that the main victims/culprits for timeouts are view-state and login caches, and since writing...
  • Blog Post: SharePoint + SQL Server AlwaysOn: Outage Troubleshooting

    So you have a SharePoint/SQL outage despite having SQL Server AlwaysOn configured, and you naturally want to know why. Event IDs 5586 and 6398 are flooding the SharePoint servers and you don’t know why. On the SharePoint servers in the application log you might see either this: Unknown SQL Exception...
  • Blog Post: Troubleshooting SharePoint Event ID 6393

    This event ID means “a SharePoint timer job had an unexpected failure” in short. Admittedly this isn’t overly informative given how many different timer-jobs there are for any given SharePoint farm. Your first challenge is therefore figuring out which job it’s talking about which shouldn’t be too hard...
  • Blog Post: Access Denied Crawling sps3 Content Source in SharePoint 2013

    No User Profiles Being Crawled Another quick one. You might notice that no user profiles are being found when you search for them. If you take a look at crawl logs, you’ll probably this error in the crawl logs and think it’s related. You’d be right – no profiles & this error are very much related...
  • Blog Post: Frozen SharePoint PSConfig Upgrade with SQL Server AlwaysOn

    If you have a SharePoint farm that uses SQL Server AlwaysOn and your upgrade is just never finishing, this article might be for you. Update : as someone pointed out, removing the service-application from the farm probably isn’t necessary. Just remove the DB from the AlwaysOn availability group and then...
  • Blog Post: SharePoint Server Patch Mismatch Problems

    If you’ve patched a SharePoint farm before you’ll know that the last stage of the process is to let PSConfig/Configuration Wizard finish the job. This will stall (by default – you can force) if it doesn’t think all the servers in the farm have the same binary versions across the board and this article...
  • Blog Post: Troubleshooting AppFabric Error Messages for SharePoint

    Otherwise entitled “The Mysteries of the Wobbly AppFabric Cache-Cluster”. In the daily running of on-premise SharePoint 2013, you may have seen errors & warnings logged about AppFabric/the distributed cache cluster. This article is to clear up why they might be happening. Errors such as: Connection...
  • Blog Post: Troubleshooting AppFabric Timeouts on SharePoint

    SharePoint 2013 uses AppFabric to host a bunch of stuff in a cache-cluster. This is awesome mainly because each web-front-end server doesn’t have its’ own cache island that can’t be shared with the other web-front-ends and the likelihood of a cache-miss is much lower (especially if...
  • Blog Post: Error Installing KB2920189 on Generation 2 Hyper-V VMs

    You might get an error installing KB2920189 on any gen2 VMs. If you do, disable secure boot in the virtual machine settings and it should work. That’s it – a quick & dirty post because I barely found any info on this issue. This problem took up far too much of my time so hopefully this workaround...
  • Blog Post: c2WTS could not provide a valid Windows Token. Reason: "Token cannot be zero"

    Quick & dirty post as this error took me longer than it should’ve to get to solve. Claims to Windows Token Service – used to convert a claim login into a Windows login for those times you need to authenticate against a service that’s not claims aware.  Web-services, SQL Server, whatever it may...
  • Blog Post: The “High-Availability SharePoint” Bible

    A big interest of mine is designing SharePoint farms to be highly-available through good architecture & solid design; something I’ve posted about quite a bit on this blog over time. This article summarises the high-availability strategies available for SharePoint and then touches on other common...
  • Blog Post: Troubleshooting Techniques for TCP/Networking and Firewalls

    A common obstacle in the world of IT is dealing with firewalls; particularly when they seem to be blocking something you need. Firewalls are by design, a pain to work with but obviously they’re a necessary proactive, security-hardening technique to lock-down any network services we don’t want unexposed...
  • Blog Post: SharePoint 2013 + Distributed Cache (AppFabric) Troubleshooting

    Two messages you may have seen if you’ve administered SharePoint 2013 in anyway way about caching are “This Distributed Cache host may cause cache reliability problems” and/or “cacheHostInfo is null” from PowerShell. This article is about how to fix those errors & caching...
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