After experiencing time machine error null then quick resolving of problem needs to be taken into consideration. Indeed Time Machine provides handy backup and restoring facility but meantime user come across with several issue in it due to known or unknown causes. At some point during accessing backup user might face time machine error null. Usually this type of problem emerges when drive permission changed into read only. Due to this problem you cannot able to create backup. Most importantly your earlier backup becomes inaccessible. Fortunately by repairing disk permission through disk utility may resolve the problem.
But if the issue does not fix scenario you should go with reformatting hard drive. To restore existing file one should choose third party Mac Data Recovery Software. It recovers all sorts of data in just few minutes. This tool provides complete and handy solution for restoring missing, inaccessible and erased data in hassle free manner. The tool is worthwhile for resolving Mac issue as well. It first determines the missing data through scanning and displays preview from where one can select desirable file which is to be restored. After that perform effective recovery. Hope you have more understanding on how to resolve time machine error null for sure.