Sometimes, we often find people complain about this error:

"The viewstate is invalid for this page and might be corrupted"

This error is usually caused by the asp worker process or the server recycling. By default, ASP.NET encrypts the viewstate using an Autogenerated Key when the process spins up. The problem comes when a client (browser) sends the request with a viewstate encrypted with the key generated by another worker process. Since the key is different, ASP.NET will not be able to decrypt the viewstate and it will throw the above error.

So, how to see this error message? There are several ways to get around this problem:

1. Host your site on a server that never restarts or recycles. But if you on shared server, it is impossible as the server has never been restarted.

2. Disable ViewstateMac by putting this ?enableViewStateMac='false'? in your web.config. This approach is not 100% secure.

3. Configure ASP.NET to not use Auto-Generated Key but rather a predefined key. This is the preferred method.

To do this, follow these steps:

- Either build your own Key Generator (http://support.microsoft.com/kb/313091/EN-US/) or use this tool (http://www.aspnetresources.com/tools/keycreator.aspx). I highly recommend you use the online tool. So assuming you will use the online tool:

- In the online tool, simply click on ?Generate?.

- Copy the content in the textbox into your site?s web.config file. The machineKey node should be within <system.web>

eg.

<configuration>
<appSettings/>
<connectionStrings/>
<system.web>
<machineKey
validationKey='2EEA416CEFC6D6BE856ED57B97FB9CA7DFA CE17C073125949A1D682C80A44BB2A
D887DDDC13DBFB0954F1000FEE5757E99693F222F8E28CAA2E 6DAB8C4F99E0C'
decryptionKey='877478B2F33A74226ABEF55FDCC1A76E43F 1BBEA6241A592'
validation='SHA1' />
<compilation debug='false'/>
<authentication mode='Windows'/>
<pages enableViewStateMac='true'/>
</system.web>
</configuration>

For more information on viewstate troubleshooting, please visit Microsoft site.

Reasons why you must trust ASPHostPortal.com

Every provider will tell you how they treat their support, uptime, expertise, guarantees, etc., are. Take a close look. What they’re really offering you is nothing close to what ASPHostPortal does. You will be treated with respect and provided the courtesy and service you would expect from a world-class web hosting business.

You’ll have highly trained, skilled professional technical support people ready, willing, and wanting to help you 24 hours a day. Your web hosting account servers are monitored from three monitoring points, with two alert points, every minute, 24 hours a day, 7 days a week, 365 days a year. The followings are the list of other added- benefits you can find when hosting with us:

- DELL Hardware
Dell hardware is engineered to keep critical enterprise applications running around the clock with clustered solutions fully tested and certified by Dell and other leading operating system and application providers.
- Recovery Systems
Recovery becomes easy and seamless with our fully managed backup services. We monitor your server to ensure your data is properly backed up and recoverable so when the time comes, you can easily repair or recover your data.
- Control Panel
We provide one of the most comprehensive customer control panels available. Providing maximum control and ease of use, our Control Panel serves as the central management point for your ASPHostPortal account. You’ll use a flexible, powerful hosting control panel that will give you direct control over your web hosting account. Our control panel and systems configuration is fully automated and this means your settings are configured automatically and instantly.
- Excellent Expertise in Technology
The reason we can provide you with a great amount of power, flexibility, and simplicity at such a discounted price is due to incredible efficiencies within our business. We have not just been providing hosting for many clients for years, we have also been researching, developing, and innovating every aspect of our operations, systems, procedures, strategy, management, and teams. Our operations are based on a continual improvement program where we review thousands of systems, operational and management metrics in real-time, to fine-tune every aspect of our operation and activities. We continually train and retrain all people in our teams. We provide all people in our teams with the time, space, and inspiration to research, understand, and explore the Internet in search of greater knowledge. We do this while providing you with the best hosting services for the lowest possible price.
- Data Center
ASPHostPortal modular Tier-3 data center was specifically designed to be a world-class web hosting facility totally dedicated to uncompromised performance and security
- Monitoring Services
From the moment your server is connected to our network it is monitored for connectivity, disk, memory and CPU utilization – as well as hardware failures. Our engineers are alerted to potential issues before they become critical.
- Network
ASPHostPortal has architected its network like no other hosting company. Every facet of our network infrastructure scales to gigabit speeds with no single point of failure.
- Security
Network security and the security of your server are ASPHostPortal’s top priorities. Our security team is constantly monitoring the entire network for unusual or suspicious behavior so that when it is detected we can address the issue before our network or your server is affected.
- Support Services
Engineers staff our data center 24 hours a day, 7 days a week, 365 days a year to manage the network infrastructure and oversee top-of-the-line servers that host our clients’ critical sites and services.