When calling the latest Windows updates , error code 0x800700c1 can occur under certain circumstances , as you can see here in the following image. The update error code 0x800700c1 and its explanation are very general and it cannot be exactly recognized why the problem is and why this error code appears.
In any case, the update error code 0x800700c1 translates to the following:
ERROR_BAD_EXE_FORMAT
This means that the downloaded Windows Update is faulty and therefore not consistent . Either something went wrong during the download or security software is running on your PC , which negatively influences the download of the update or changes the file. As a rule, this is very often caused by antivirus programs, which are said to have discovered malware in the download of the update and thus lead to the incorrect file format.
For this reason, you should briefly deactivate the antivirus program and then start the download again. Of course, you should not forget to reactivate the virus software after the successful installation .
Reset Windows Update Store
Another sensible step would be to reset the Windows Update Store completely if the error 0x800700c1 still occurs. We have already described this in detail in our article ” 0xC1900101 – 0x20017 Windows 10 could not be installed ” in the section ” Reset Windows Update Files “. You should definitely do this, restart the PC once and then carry out the Windows update again. Now the error code 0x800700c1 should no longer occur.
In the past we have already reported numerous Windows Update error codes , maybe the following articles are also interesting for you.
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