Possible problems with the SPDESIGNUNKNOWN format files
The inability to open and operate the SPDESIGNUNKNOWN file does not necessarily mean that you do not have an appropriate software installed on your computer. There may be other problems that also block our ability to operate the SharePoint Designer file. Below is a list of possible problems.
- Corruption of a SPDESIGNUNKNOWN file which is being opened
- Incorrect links to the SPDESIGNUNKNOWN file in registry entries.
- Accidental deletion of the description of the SPDESIGNUNKNOWN from the Windows registry
- Incomplete installation of an application that supports the SPDESIGNUNKNOWN format
- The SPDESIGNUNKNOWN file which is being opened is infected with an undesirable malware.
- The computer does not have enough hardware resources to cope with the opening of the SPDESIGNUNKNOWN file.
- Drivers of equipment used by the computer to open a SPDESIGNUNKNOWN file are out of date.
If you are sure that all of these reasons do not exist in your case (or have already been eliminated), the SPDESIGNUNKNOWN file should operate with your programs without any problem. If the problem with the SPDESIGNUNKNOWN file has not been solved, it may be due to the fact that in this case there is also another rare problem with the SPDESIGNUNKNOWN file. In this case, the only you can do is to ask for assistance of a professional staff.
