I get the following error -
An error occurred while signing: The application has failed to start because its side-by-side configuration is incorrect. Please see the application event log or use the command-line sxstrace.exe tool for more detail.
Is there any solutions on how to fix this issue?
As I stated in my comment, this error has everything you need in it to solve the problem- it's already recommending you to do something to fix it. The first thing you should be doing is taking that advice and look at the system's event log and/or the sxstrace.exe tool.
You can also do a quick search online; you can literally copy and paste the full error to get the following from Microsoft help forums: https://answers.microsoft.com/en-us/windows/forum/windows_7-pictures/this-application-failed-to-start-because-side-by/7673bf12-87c2-48ca-b5ae-b8aa85e295dc
Use the System File Checker tool (SFC.exe) to determine which file is causing the issue, and then replace the file. To do this, follow these steps:
Open an elevated command prompt. To do this, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator. If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.
Type the following command, and then press ENTER: sfc /scannow
The sfc /scannow command scans all protected system files and replaces incorrect versions with correct Microsoft versions.
More Information about SFC scan can be found in this document:
http://support.microsoft.com/kb/929833
Perform a check disk: Open Computer by clicking the Start button and then clicking Computer. Right-click the drive that you want to check, and then click Properties. Click the Tools tab, and then, under Error-checking, click Check now.
If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
To automatically repair problems with files and folders that the scan detects, select Automatically fix file system errors. Otherwise, the disk check will report problems but not fix them.
To perform a thorough check, select Scan for and attempt recovery of bad sectors. This scan attempts to find and repair physical errors on the drive itself, and it can take much longer to complete.
To check for both file errors and physical errors, select both Automatically fix file system errors and Scan for and attempt recovery of bad sectors.
Click Start.
Depending on the size of your drive, this might take several minutes. For best results, don't use your computer for any other tasks while it is checking for errors.
Update the .NET framework
Download and install the latest .NET Framework
http://www.microsoft.com/downloads/details.aspx?FamilyId=AB99342F-5D1A-413D-8319-81DA479AB0D7&displaylang=en
If still, the error persists then provide an error log: Type eventvwr.msc /s in the address bar.
List any events that are listed as "Error" in the main window when you go to "Windows Logs" and "Application." There are often a lot of them. Send us whichever ones you see listed for the last couple days. (Please also do for the logs in "System"). When you do, provide us the name of the "Source" and whatever is listed in the description box below the list of logs when you click on one.
The following TFS error occurs using Visual Studio 2013 to interface to TFS (TFS apparently also carries the version of Visual Studio with it):
item has pending changes but does not exist locally
This seems very wrong, as one chief purpose of TFS is to give me items that do not exist locally.
Sometimes (but not always) this occurs after a delete, and the purpose is to restore / update the file from the server.
In the Solution Explorer:
right click on file that gives error=>Source Control=>Undo Pending Changes.
right click on file=>Add file to Source control.
Now you are good to go.
Not sure about this but have you checked out a different workspace? Try going to View->Other Windows->Source Control Explorer, then open the Workspace dropdown near the top of the screen, and select "Workspaces..
As it was suggested here, just undo this change, and download will start normally.
To explain what's going on: there are certain conditions on locally changed items (files and folders), and if they are not met, TFS can interrupt downloading sources from server. One of such conditions is that item which is regarded by TFS as locally changed (no matter if you intend to check-in it or added it to "Excluded changes") should actually exist.
For example, some local file was marked to be added to TFS, but not checked in. After that, it was locally deleted from disk. But local TFS still remembers about its existence. So the message tells you that TFS is unable to download new version if the information that this file should be added still exists.
Faced similar message with VS2017. However doing source control -> undo didn't work, it produced message "No pending changes were found for " and problem persisted.
Resolution:
- do "Check out for edit" on problematic file(s)
- source control -> undo
- get latest
Right click on the problematic file in Solution Explorer and click add item to source control.
I am using Microsoft Word Automation for generating documents. The application is working on one system, but not on other.
The problem with another system is that I once corrupted its registry by mistake. But, I have uninstalled and re-installed Microsoft Office several times. It seems that Office installation and deinstallation doesn't reset its dcom configuation settings, which is why my application is unable to attach the .dotm file.
The server where it is working, the settings are as follows:
but, the system where it is not working, the "Local Path" is showing up as blank value. I believe this is the only problem for my issue.
Any clues how can I restore these settings back?
According to this, those configurations such as local path are extracted from the registry and are not modifiable:
(...) The General tab provides general information about the application. This tab displays the Application name, type (local server or remote server), and location (local path or remote computer). These settings are not modifiable through the DCOM Config interface.
The General Tab retrieves all of its information from subkeys of the following registry key:
HKEY_CLASSES_ROOT\CLSID{...CLSID...}
where {...CLSID...} is the unique CLSID for the Object Server currently being viewed. (...)
So! Run > regedit > Go to HKEY_CLASSES_ROOT\CLSID, then go to Edit menu and click Find, filter by key and put your ApplicationID there. You should find it this way.
Now after finding the registry entry for your DCOM, expand it, you should see a LocalServer32, the property (Default) holds your Local Path value, try change it the same path as in your new Oracle Virtual Box.
If this works, test if the value hold after restarting and logging in with you Domain User account if it does, great, if not, run a batch to run a .reg file to perform this modification, on every login.
There are number of posts on this and I have tried many a things by now. But to no avail. Myself a Winforms Developer basically, started working on this Web stuff few days back as my company is taking Web initiatives.
I have a ASP.Net project and I want to host it on local IIS. In Project properties -> Web settings I chose Use Local IIS Server and gave a url as localhost/MyApp. I tried accessing it on my firefox browser and received error as HTTP Error 503. The service is unavailable.
Previously I got many other errors and I one by one fixed them all. But struck with this one. These are the settings I have in my project
Application Pool set to ASP.Net v4.0 Classic
App Pool Enable 32 bit Application property is true
App Pool is started
Project build property set to Any CPU for Target framework
But I would like to mention a weird behavior. Following is something that I am facing
Application Pool is Started
I try to access my local website (by giving url as localhost/MyApp)
I receive the error as HTTP Error 503. The service is unavailable
Application Pool is Stopped
I have seen following link and I have already tried it. For the above behavior I reached here. According to this link, Computer name should not have . in it. I don't have any . in my Computer name but do have - in it. Also my domain name contains . in it. Moreover I can't change these settings as its my office laptop and our TFS settings are bound to our Domain and Computer Names.
Can anyone help me to understand whats happening? Please guide me. Thanks.
Edit
I have following code in Global.asax. Application_BeginRequest method is empty in same file.
protected override void Application_Start(object sender, EventArgs e)
{
base.Application_Start(sender, e);
String _path = String.Concat(System.AppDomain.CurrentDomain.RelativeSearchPath, ";",
System.Environment.GetEnvironmentVariable("PATH"));
System.Environment.SetEnvironmentVariable("PATH", _path, EnvironmentVariableTarget.Process);
MyAppLog.Initialize();
MyAppLog.WriteMessage("Application Started");
}
Update
As per the suggestions in Comment, I am able to run the website from Cassini.
One possible reason this might happen is that the Application Pool in IIS is configured to run under some custom account and this account either doesn't exist or a wrong password has been provided, or the password has been changed. Look at the advanced properties of the Application Pool in IIS for which account it uses.
Also the Event Log might contain more information as to why the Application Pool is stopping immediately on the first request.
Ok, I have another solution for one specific case: if you use WINDOWS 10, and you updated it recently (with Anniversary Update package) you need to follow the steps below:
Check your Windows Event Viewer - press Win+R and type: eventvwr, then press ENTER.
On the left side of Windows Event Viewer click on Windows Logs -> Application.
Now you need to find some ERRORS for source IIS-W3SVC-WP in middle window.
Probably you will see message like:
The Module DLL >>path-to-DLL<< failed to load. The data is the error.
You have to go to Control Panel -> Program and Features and depending on which dll cannot be load you need to repair another module:
for rewrite.dll - find IIS URL Rewrite Module 2 and click Change->Repair
for aspnetcore.dll - find Microsoft .NET Core 1.0.0 - VS 2015 Tooling ... and click Change->Repair.
Restart your computer.
For my situation is that my login password changed, while the application pool still uses the old one. So just click the "Advanced Settings" of your application pool and reset your "Identity".
I was facing the same problem, and debugged it using the event logs. First it said that : "The description for Event ID 5059 from source Microsoft-Windows-WAS cannot be found".
I then turned on WAS using turn windows features on/off. Then i saw this in eventvwr
"Microsoft-Windows-DistributedCOM cannot be found".
Finally I gave up and deleted the App Pool (that used to stop on accessing the website) and created it again, as it is. This resolved the problem.
Most of Time, it was occured due to AppPool Setting.
Check the following to resolve this
Check Apppool service is running.
Check Identity of AppPool.
Enter the new password if it has changed for that identity.
The following Images show these setting in IIS
For anyone coming here with Windows 10 and after updating them to Anniversary update, please check this link, it helped me:
https://orcharddojo.net/blog/troubleshooting-iis-apppool-crashes-status-503-after-windows-10-anniversary-update
In case link goes down:
If your Event log shows that aspnetcore.dll, rewrite.dll (most often, but could be others as well) failed to load, you have to repair the missing items.
Here are two specific issues we've experienced so far and how to fix them, but you may bump into completely different ones:
"C:\WINDOWS\system32\inetsrv\rewrite.dll" (reference)
Go to "Programs and Features" (Win+X, F) and repair "IIS URL Rewrite Module 2".
"C:\WINDOWS\system32\inetsrv\aspnetcore.dll" (reference)
Go to "Programs and Features" (Win+X, F) and repair "Microsoft .NET Core 1.0.0 - VS 2015 Tooling ...".
If you have McAfee HIPS and if you see the following error in event viewer application log:
The Module DLL C:\Windows\System32\inetsrv\HipIISEngineStub.dll failed to load.
The data is the error.
Then the following resolved the issue in my case:
https://kc.mcafee.com/corporate/index?page=content&id=KB72677&actp=LIST
Quote from the page:
Click Start, Run, type explorer and click OK.
Navigate to: %windir%\system32\inetsrv\config
Open the file applicationHost.config as Administrator for editing in Notepad.
Edit the <globalModules> section and remove the following line:
<add name="MfeEngine" image="%windir%\System32\inetsrv\HipIISEngineStub.dll" />
Edit the <modules> section and remove the following line:
<add name="MfeEngine" />
After you have finished editing the applicationHost.config file, save the file, then restart the IIS server using iisreset or by restarting the system.
In my case I checked event logs and found error was
Cannot read configuration file ' trying to read configuration data from file '\\?\', line number '0'. The data field contains the error code.
The error code was 2307.
I deleted all files in C:\inetpub\temp\appPools and restarted the iis. It fixed the issue.
I had a similar issue. I solved it by adding my user to the "Log on as a batch job" policy under "Local Security Policy" > "Local Policies" > "User Rights Assignment".
When I first time add the service and created the app pool for it.
I did "iisreset" from command prompt, and it worked.
I was experiencing this error and in my case the cause was that some time ago I modified the user password, and the 503 error didn't appears till I restarted the application pool.
So I fixed it setting the new password on Applications Pools / Advanced Settings / Identity / [...] / Set... / Password / Confirm Password
If you can run the website in Visual Studio debugger, then might be able to see where in your code the application pool is crashing. In my case, it was a function being called recursively an unlimited number of times, and that caused a stack overflow. Note: the Windows event log and the IIS logs were not helpful to diagnose the problem.
I had the same issue with iis 8.5. After searching the eventViewer under windows Logs-->applications, I realized that I'm having a permission error for the machine.config file of the .net framework located at "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config\machine.config".
Giving it a permission for IIS_IUSRS solved my problem (right click the file-->properties-->security-->edit-->add-->IIS_IUSRS)
Just to add to these Anniversary Update issues (thanks Microsoft) if the file you are missing is cgi.dll, ie your Event Viewer has
The Module DLL C:\WINDOWS\System32\inetsrv\cgi.dll failed to load. The data is the error.
Then to fix this:
Go to IIS Manager
Select the very top row in the Connections panel (typically your PC name)
At the very bottom of the right panel, under Management, you should have Web Platform Installer
Once that loads, select Products
In the search type in cgi then hit <Enter>
Select IIS: CGI then click Add on the right and finally Install on the bottom
After installing it should force you to restart your PC and you should be fixed.
To Fix the problem, Follow the steps as I faced the same issue and below solution worked for me
1- Give full Rights or at least read access rights of Folder "C:\inetpub\temp" to IIS_IUSRS
2- also check same rights given to User IIS_IUSRS of folder "C:\inetpub\wwwroot".
hope this solution works!
I had a similar issue, all my app pools were stopping whenever a web request was made to them. Although I was getting the following error in the Event Viewer:
The worker process for application pool 'appPoolName' encountered an
error 'Configuration file is not well-formed XML ' trying to read
configuration data from file
'\?\C:\inetpub\temp\apppools\appPoolName\appPoolName.config', line
number '3'. The data field contains the error code.
Which told me that there were errors in the application.config at:
C:\Windows\System32\inetsrv\config\applicationHost.config
In my scenario, I edited the web.config on deploy with an element IIS clearly dislikes, the applicationHost.config scraped the web.config and inserted this bad element and wouldn't resolve until I manually removed it
In addition to the steps outlined at this link from Orhan's answer, you may need to additionally remove the native module by going to IIS Manager > Server Root > Modules > Configure Native Modules. Select MfeEngine and then select Remove.
Changing "Managed Pipeline Mode" from "Classic" to "Integrated" worked for me.
It can be changed at Application Pools -> Basic Settings
One possible reason this might happen is that you don't have enough disk space in your server machine. You can find more information in event viewer.
if such thing happen, just stop the IIS, clean some free disk space and restart the IIS and then start the App Poll.
Such 503 errors were encountered on our side on Windows Server 2019 while setting up a fresh new Classic ASP website.
In fact, in the App Pool, setting ".NET CLR Version" to "No Managed code" caused the App Pool to stops 2 seconds after being started, thus generating WAS 5002 and 5021 errors in the Windows Event Log.
The solution was to put "v4.0", even if no .NET is used.
I'm late to the party, but the solution that worked for me isn't listed.
The solution for me was simply to delete the web site and application pool within IIS, and re-create them.
This is because originally I had create the site/folder first, then installed the dotnet core runtime. For some reason this failed to allow the site to start up.
Once re-created, the site came to life with none of the other suggestions being required.
In my case, the web sites displayed "503 Service unavailable" and the application event log showed "...\aspnetcorev2.dll failed to load. The data is the error." This only happened for IIS sites where where the IIS setting "Enable 32-Bit Applications" was True. The system was stopping the app pools for these sites, which is what generated the "503 Service unavailable" message when trying to retrieve the site.
It turns out the path specified in this application event log didn't even exist. Trying to repair the two "Microsoft.NET Core SDK 2.1.50x" versions installed on the system didn't resolve the issue, nor did installing the latest and only aspnetcorev2.dll that Microsoft seems to have available, nor did uninstalling these SDKs.
NOTE: Microsoft doesn't even seem to have the installers available anymore for the original v2 ASP.NET Core versions that had been installed on my system.
What worked:
Since I don't have any ASP.NET Core sites on this system, the solution that worked for me was to uninstall all the related DLLs from my system and to remove them from the IIS applicationhost.config file by commenting them out (see aspnetcore.dll failed to load and applicationhost.config file path in IIS 7, 7.5, 8, 8.5 and IIS 10?). If you do use a later version of ASP.NET Core, I'd think you could just as well update the references in applicationhost.config [I haven't tried that].
In my case this application pool automatically stopped due to error log folder I created in local which is not exist in server. Check the web.config file whether any key path you added which is exist in server or not.
Will this answer Help you?
If you are receiving the following message in the EventViewer
The Module DLL aspnetcorev2.dll failed to load. The data is the error.
Then yes this will solve your problem
To check your event Viewer
press Win+R and type: eventvwr, then press ENTER.
On the left side of Windows Event Viewer click on Windows Logs -> Application.
Now you need to find some ERRORS for source IIS-W3SVC-WP in the middle window.
if you receiving the previous message error then solution is :
Install Microsoft Visual C++ 2015 Redistributable 86x AND 64X (both of them)
Source
In my case error message displaed in Windows Event Viewer -> Windows Logs -> Application was "The Module DLL C:\Windows\system32\inetsrv\rewrite.dll failed to load. The data is the error."
Uninstalling rewrite module via installer solved the problem. I wasn't using any rewrite rules so I uninstalled rewrite module. Reinstalling the module may help the problem as well.
I just had this issue on some legacy servers running Windows 2008 R2. 32bit applications would crash the app pool and return a 503 without hitting the app code. The problem seems to be related to .net core module erroneously trying to load the 64bit version of the module even though the 32bit application in question was not a .net core app.
It seems that IIS still loads the module when figuring out which module to load to service the request and trying to load a 64bit version into a 32bit process is no bueno.
In the end, I had to uninstall all versions of .net core from the server and reinstall the latest (at this time 3.1.15- we're not using 5 yet). After that my 32bit apps and .net core apps could coexist on the same server.
This is the blog post that helped me resolve this after days of banging my head on it. Hopefully it helps someone out.
Blog post with the solution
Give full Rights rights to Folder "C:\inetpub"
Work for me!
Check the log written to [event viewer\Windows Logs\System] node.
Source is 'WAS'.
I can't seem to write to the event log in .NET. I get the following exception:
System.Security.SecurityException: The source was not found, but some or all event logs could not be searched. Inaccessible logs: Security.
I don't want to access the Security log. How do I get around this error? Thanks!
You can try to Start Visual Studio with Run As Administrator permission.
You can try to create an event log in your application like Lachlan suggests but realize that this will require administrator privs. Instead I reccomend that you take care of this in your installer / deployment automation layer.
I use WiX so I recommend reading:
How do you create an event log source using WiX
Have you set the source for your eventlog? E.g.:
EventLog.CreateEventSource("My Super App", "Application");
If, for example, you are developing a service application that use EventLog class and need to test somes classes before running the service, which need to be installed. You can add a app.manifest to your project (not service project, maybe a console application), and in 'requestedExecutionLevel' set the level to "requireAdministrator", when you try to run your project from visual studio, it will ask to elevate the permissions that will (if want)i restart the visual studio, then will be can to use EventLog class.
hope this help,
antonio