After login on exchange 2010 OWA (webmail) the page goes to HTTP 500 error.

Solution:

The issues is normally caused by the “Microsoft Exchange Forms-Based Authentication” service being in a stopped state. Starting the service and all starts working again.

Rebooted Computer after uninstalling some software (seams to be any software) get an error pop up that says Bad Image ‘guard32.dll’, also pops up when you open almost anything.

Solution:

Open Notepad and copy/paste the entire contents of the codebox below into Notepad (don’t forget to copy and paste REGEDIT4):

Code:

<code>

REGEDIT4

[HKEY_LOCAL_MACHINE\software\microsoft\windows nt\currentversion\windows]
"AppInit_DLLs"=-

</code>

Save the file as fix.reg and choose to Save as type: – All Files then close the Notepad file.
It should look like this: 

Double-click on fix.reg and choose Yes to merge/add it to the registry. Please delete the file afterwards.

——————————————————

Go to Start > Run and copy/paste the following into the Run box and click OK:

cmd /c del /a/f/q “c:\windows\*****\GUARD32.DLL”

Where the **** are put the directory of dll file, it seams to vary.

A CMD window will open and close again, this is normal.

Reboot